PDA

View Full Version : Ducati 250 Desmo Rebuild



ebbo
18-12-17, 16:58
I've always wanted a Desmo but never thought I'd get my hands on one the prices they are, so when I saw an ad in Squires Cafe for a 1974 Desmo in bits I went all of a dither. I thought about it over the weekend, couldn't sleep, then arranged to take a look at it all toady. It is a proper mess alright and some are bits missing. It was taken apart 40 years ago for a refurb that was never finished, hopefully I can bring it back.

I don't know how long this will take as I've never done anything like this before, but theses are basically simple machines, right? (well, apart from the Desmo bit), finger crossed :thumb2

ebbo
18-12-17, 17:00
A few pictures of the 'bike'

steve hughes
18-12-17, 17:06
Cracking project, Im in
Steve

jonnie comet
18-12-17, 17:41
Bloody hell....I would have wet myself if I had seen that ad'....

I'm in, crack on......:thumb2

AndyB_11
18-12-17, 23:28
Well the best I can offer in the way of advise is to contact mikeyboy and ask him to take photos of anything you need out of the manuals he has for my bike or better still go down and talk to him then look through all my stuff that’s at his unit so you can maybe get a feel for what’s missing from yours. He’s turned into a bit of a Desmo specialist over the last year or so and the best part is that he’ll steer you away from blind alleys when it comes to chasing parts.

g.s.john
19-12-17, 06:26
Ebbo contact www.crmc.co.uk there is a few still raced you might get some good advice.

ebbo
19-12-17, 08:38
Ebbo contact www.crmc.co.uk there is a few still raced you might get some good advice.

I'll try anywhere to get parts if I'm stuck so thanks John


Well the best I can offer in the way of advise is to contact mikeyboy and ask him to take photos of anything you need out of the manuals he has for my bike or better still go down and talk to him then look through all my stuff that’s at his unit so you can maybe get a feel for what’s missing from yours. He’s turned into a bit of a Desmo specialist over the last year or so and the best part is that he’ll steer you away from blind alleys when it comes to chasing parts.

Cheers Andy, I'll soon start squealing if I get stuck! I've spent a bit of time chasing the links you gave me from my Pub post, looks likeI can get most of the parts I need which is a relief, costly though! :blast:D

Lord Snooty
19-12-17, 10:21
Good luck ebbo, hope it goes well.

inda1965
19-12-17, 12:36
Good luck mate, thats a great project, if you change yr mind at any point i will gladly take it off yr hands :-)

Cant wait to see the thread when the restoration begins

AndyB_11
19-12-17, 22:21
Get it finished and we can drag out the yellow relics then watch the others alternate between salivating and howling with laughter. I think you need to be of a certain age to want a Desmo single and I’d guess that the required age is between 56 and 64 with no more than a year either way :D

ebbo
20-12-17, 20:54
Get it finished and we can drag out the yellow relics then watch the others alternate between salivating and howling with laughter. I think you need to be of a certain age to want a Desmo single and Iíd guess that the required age is between 56 and 64 with no more than a year either way :D

You are dead right Andy! I'm 62 years young! madness haha :D

I'm starting getting things rolling straight after the new year, thanks everyone for there interest and kind words :thumb2

Martin

Micky
20-12-17, 20:59
I'm in ...and will be watching with great interest.

Now forget about Christmas Ebbo and get on with it lad :D

:beerjug:

Edit .... and I'm 71 years of age, going on eighteen and three quarters :D

mikeyboy
20-12-17, 22:00
Looking like a nice project,at least you have one engine in one complete lump,
Unlike Andy,hmmmmmm

Ringmaster999
20-12-17, 22:23
Great project ebbo. Looking forward to your resto getting underway:thumb2

Simon_100
21-12-17, 12:28
Get it finished and we can drag out the yellow relics then watch the others alternate between salivating and howling with laughter. I think you need to be of a certain age to want a Desmo single and Iíd guess that the required age is between 56 and 64 with no more than a year either way :D

Wow, my dream. I has a very quick 350 Mk 3 back in '76/77 but sold it to buy a 45O Desmo that was crap - the sole that to buy a 750 Laverda ... But the 350 was the dog's and I'd give a lot to have either the Mk 3 or a Desmo again ...

BTW just 60 and still rockin'

@ Andy - nice to see you in another mad house :)
@ Mickeyboy - how's that pink Funduro of yours?

Regs

Simon

Simon_100
21-12-17, 13:59
PS it's go the original tyres! - Surprisingly they were OK!

AndyB_11
21-12-17, 15:50
Wow, my dream. I has a very quick 350 Mk 3 back in '76/77 but sold it to buy a 45O Desmo that was crap - the sole that to buy a 750 Laverda ... But the 350 was the dog's and I'd give a lot to have either the Mk 3 or a Desmo again ...

BTW just 60 and still rockin'

@ Andy - nice to see you in another mad house :)
@ Mickeyboy - how's that pink Funduro of yours?

Regs

Simon

Hi Simon, it’s always good to have another voice support my theory about the age of those who like the old single cylinder Ducatis :thumb2

ebbo
21-12-17, 20:44
PS it's go the original tyres! - Surprisingly they were OK!
Mine still has its original Pirelliís, rock hard! Iím wondering how to get them off without damaging the rims, cut them off?

Simon_100
22-12-17, 06:25
Mine still has its original Pirelliís, rock hard! Iím wondering how to get them off without damaging the rims, cut them off?

Get the Pirelli calendar for that bikes' year from Amazon, buy lube from your local Sex Toy Supermarket and enjoy! :bounce1:bounce1:bounce1

Simon

oblertone
22-12-17, 09:44
It's definitely an age thing; I grew up opposite the workshop door of Bill Selby Motorcycles in Doncaster. The mechanics would de-crate the bikes, build them up, then rag them up the street. The singles were only surpassed by the Montjuic in the favourite stakes.

ebbo
22-12-17, 12:45
Get the Pirelli calendar for that bikes' year from Amazon, buy lube from your local Sex Toy Supermarket and enjoy! :bounce1:bounce1:bounce1

Simon

Tastefull, very tastefull

dean0n0
22-12-17, 13:07
Mine still has its original Pirelli’s, rock hard! I’m wondering how to get them off without damaging the rims, cut them off?

Take them to Transits and get Andy to pop em off with the machine.

AndyB_11
22-12-17, 14:59
It's definitely an age thing; I grew up opposite the workshop door of Bill Selby Motorcycles in Doncaster. The mechanics would de-crate the bikes, build them up, then rag them up the street. The singles were only surpassed by the Montjuic in the favourite stakes.

Montjuic? I might fire mine up over the holiday just to spread a bit of Xmas cheer for a 5 mile radius. Obviously it won’t need to leave the drive to do that :D

ebbo
22-12-17, 15:12
Take them to Transits and get Andy to pop em off with the machine.
That’s actually quite a good idea!

Simon_100
22-12-17, 16:16
Montjuic? I might fire mine up over the holiday just to spread a bit of Xmas cheer for a 5 mile radius. Obviously it won’t need to leave the drive to do that :D

You can go off people you know! :)

AndyB_11
22-12-17, 17:09
You can go off people you know! :)

I know and I sometimes hate myself.

Psst, have you forgotten I’ve also got an H2 of the proper stinkwheel variety rather than the modern sewing machine bearing the same name? :D

ebbo
22-12-17, 22:20
Well, I've spent much of the afternoon and evening going through the bits and cleaning up various parts. The front hydraulic brake parts had been take off all in one piece so I decided to start splitting parts up. Thank goodness for bench vices and blowlamps. It took two cycles of blowlamp and cold water to get the master cylinder lid to move with a large pair of Stillsons. Inside it was bone dry. The master cylinder piston is locked solid, I'll give it the heat treatment another day and see if I can get it moving.

mikeyboy
23-12-17, 21:36
Wow, my dream. I has a very quick 350 Mk 3 back in '76/77 but sold it to buy a 45O Desmo that was crap - the sole that to buy a 750 Laverda ... But the 350 was the dog's and I'd give a lot to have either the Mk 3 or a Desmo again ...

BTW just 60 and still rockin'

@ Andy - nice to see you in another mad house :)
@ Mickeyboy - how's that pink Funduro of yours?

Regs

Simon

Hi simon,the funduro was bought by a member of this parish!
To finance a ktm 640adv for this last years trip.
I might move the 640 in the new year to enable a new build for 2019 trip
Next years trips involve my wife on pillion so I donít need a big dirt bike
Mike

ebbo
23-12-17, 23:21
I was bored so spent the evening getting the piston out of the master cylinder. Lots of heat, 3in1 and a drill up the end to tap/knock the piston back. Eventually it came free. You can still get a service kit for theses (Brembo PS15) so for now I've polished up the inside of the bore to get rid of the marks and it's looking pretty good. If it doesn't work I'll have to try plan B.


Disgusting, the black goop on the spring is a melted plastic fitting, it did get a bit hot :augie

Simon_100
24-12-17, 06:34
I know and I sometimes hate myself.

Psst, have you forgotten Iíve also got an H2 of the proper stinkwheel variety rather than the modern sewing machine bearing the same name? :D

No, I had't forgotten, along with a veritable stable of goodies ... but I live here in sunny Spain and if it weren't fr the fact that we've already done the shopping we could have had a BBQ for Christmas dinner tomorrow! :beerjug:


I was bored so spent the evening getting the piston out of the master cylinder. Lots of heat, 3in1 and a drill up the end to tap/knock the piston back. Eventually it came free. You can still get a service kit for theses (Brembo PS15) so for now I've polished up the inside of the bore to get rid of the marks and it's looking pretty good. If it doesn't work I'll have to try plan B.

A timely reminder that I haven't the knowledge, experience or skills - nor a workshop for that matter - to do this kind of a job. Timely because there's room in my garage for another bike and I was thinking of an old Sanglas, Ducati single being like gold dust here as in the UK!


Hi simon,the funduro was bought by a member of this parish!
To finance a ktm 640adv for this last years trip.
I might move the 640 in the new year to enable a new build for 2019 trip
Next years trips involve my wife on pillion so I donít need a big dirt bike
Mike

I seem to recall your selling it Mick. Re your trip with your good lady, have you thought about the Aragon HISS in September? It has lots of very, very easy trails stab for riding 2-up as well as amazing roads and lots of interesting places to visit. The trails alone (1,400 kms and growing) cover an area about four times that of the Catalonia/Pyrenees HISS that you came to!

Meanwhile Happy Christmas to you all - I,m feeling sick already ... :beer:

Regs

Simon

XR.
24-12-17, 10:35
I saw that ad in Squires but the missus ushered me out the door before I could take the number, looking forward to seeing you enjoy its progress, is there a number plate with it?

andrewgsadv
24-12-17, 12:55
Looking forward to your rebuild, first big road bike I rode,my brothers but he was away at farming college and non the wiser. Electrics were a pain in the wet but what a gorgeous bike. Will see if he has any parts or manuals in his man drawer.:thumb2

ebbo
24-12-17, 17:17
Looking forward to your rebuild, first big road bike I rode,my brothers but he was away at farming college and non the wiser. Electrics were a pain in the wet but what a gorgeous bike. Will see if he has any parts or manuals in his man drawer.:thumb2
Oooh, thanks :thumb2

ebbo
24-12-17, 17:22
I saw that ad in Squires but the missus ushered me out the door before I could take the number, looking forward to seeing you enjoy its progress, is there a number plate with it?
We look at the notice board nearly every week, not much grabs my interest. I got number plates but no log book, they are long gone.

Simon_100
25-12-17, 08:23
Tastefull, very tastefull

Tasteful indeed if not exactly efficacious! Time to up the octane with some genuine 'seventies rocket fuel! :clap


https://www.youtube.com/watch?v=JrKUwUGwQfs

Yes, it'm bored already and it's not even ten o`clock on Christmas morning ... seasonal greetings! :beerjug:

Simon

ebbo
29-12-17, 23:08
Spent an hour or so disassembling bits in the garage today. Mostly successful but I wasn't too surprised when the bleed nipple sheared off the brake caliper :rolleyes: I'd used lots of heat but not enough it seems :blast

I'm pretty sure I've got these out before on my old airhead that had the same calipers, anyway, Bahco extractor set ordered and we'll try again.
With lots more heat!

dean0n0
29-12-17, 23:58
Put some easit oil on it whilst awaiting delivery.

Simon_100
30-12-17, 06:29
Spent an hour or so disassembling bits in the garage today. Mostly successful but I wasn't too surprised when the bleed nipple sheared off the brake caliper :rolleyes: I'd used lots of heat but not enough it seems :blast

That's exactly what I did to my Laverda! But I didn't know about the heat think back in '78 so broke the extractor off inside the nipple thing ...

Luckily enough it had another brake and the existing one worked fine - I was just bleeding the braced to see how it was done! - so ket it until I sold the bike - and that cost me ...

Note to self, if buying a rebuild keep to something simple - MZ 250 stroker perhaps? :)

Meanwhile please keep posting and maybe this (https://www.eurojamb.com/ducati-bevel-single-masterbook-workshop-manual-250-350-450-p-2102.html) would help - I remember I found an alternative manual to the Haynes, which people said wasn't much good. And BTW - Happy Christmas, Santa's here in town (http://www.bevelheaven.com/manuals/450_OwnersManual/index.htm)! :)

Regs

Simon

Wapping
30-12-17, 07:36
You may well find these guys helpful:

https://www.madeinitalymotorcycles.com

Good bods to deal with.

ebbo
30-12-17, 07:59
That's exactly what I did to my Laverda! But I didn't know about the heat think back in '78 so broke the extractor off inside the nipple thing ...

Luckily enough it had another brake and the existing one worked fine - I was just bleeding the braced to see how it was done! - so ket it until I sold the bike - and that cost me ...

Note to self, if buying a rebuild keep to something simple - MZ 250 stroker perhaps? :)

Meanwhile please keep posting and maybe this (https://www.eurojamb.com/ducati-bevel-single-masterbook-workshop-manual-250-350-450-p-2102.html) would help - I remember I found an alternative manual to the Haynes, which people said wasn't much good. And BTW - Happy Christmas, Santa's here in town (http://www.bevelheaven.com/manuals/450_OwnersManual/index.htm)! :)

Regs

Simoni’m going to cycle quite some heat on that brake caliper before I try the extractor (I’ll give it a good bashing too lol). If it all goes bad spark erosion maybe an option after than that It’s get a replacement.

Thanks everyone for the links

AndyB_11
30-12-17, 16:59
Buy a set of left handed twist drills, things like bleed nipples that have a hole through them suddenly become easy to remove because the drill will catch on the seized part and more often than not spin it out. If it fails then reach for the screw extractors.

Simon_100
31-12-17, 07:28
Hmm, just found a Ducati 250 Strada up and running but needing some TLC!

From memory these ugly bikes were manufactured under license in Spain and has 'soft' cams. I've seen an electric start version on the streets here and not so long ago you saw them all the time ...

https://thespanishbiker.files.wordpress.com/2017/12/screen-shot-2017-12-31-at-08-26-33.png

First thing to go would be that fairing ...

What do you think guys?

Regs

Simon

PS on further investigation I think the Strada was made in Italy whilst the Forza was made in Spain:

https://www.youtube.com/watch?v=XskRBI5Ubt0

https://www.youtube.com/watch?v=sNUX9nS4L9s

Simon_100
31-12-17, 09:17
PS the subsequent video to the Strada is a fantastic bike - boring vid but hang on until minute 2.50 when you see the glass panel over the camshaft bevel gears - lovely-jubly! :)


https://www.youtube.com/watch?v=MD-OeGBqCJU

ebbo
31-12-17, 10:02
PS the subsequent video to the Strada is a fantastic bike - boring vid but hang on until minute 2.50 when you see the glass panel over the camshaft bevel gears - lovely-jubly! :)


https://www.youtube.com/watch?v=MD-OeGBqCJU

That top bevel is bathing in oil!

Why put that dumb music on when we want to hear the bloody bike

ebbo
31-12-17, 10:05
Would you believe the other nipple just about fell out :blast

I gave it a good few light taps with a hammer cold, got it really hot, gave it a couple more taps then just tried the spanner on it, blimey, it was like it had never been tightened up :eek:

dr nosh
31-12-17, 10:41
Master cylinder and caliper repairs. Sleeving in stainless steel. (Advertise in the Old Bike Mart).

01284 750729

restore@pastparts.co.uk

ebbo
31-12-17, 11:02
Master cylinder and caliper repairs. Sleeving in stainless steel. (Advertise in the Old Bike Mart).

01284 750729

restore@pastparts.co.uk

Cheers, I've sent them an email regarding re sleeving the master cylinder

jonnie comet
31-12-17, 11:30
Why put that dumb music on when we want to hear the bloody bike


EXACTLY !!!!!.......I was waiting to hear that thing roar along.........:(

ebbo
31-12-17, 12:27
Hmm, just found a Ducati 250 Strada up and running but needing some TLC!

From memory these ugly bikes were manufactured under license in Spain and has 'soft' cams. I've seen an electric start version on the streets here and not so long ago you saw them all the time ...

https://thespanishbiker.files.wordpress.com/2017/12/screen-shot-2017-12-31-at-08-26-33.png

First thing to go would be that fairing ...

What do you think guys?

Regs

Simon

PS on further investigation I think the Strada was made in Italy whilst the Forza was made in Spain:

https://www.youtube.com/watch?v=XskRBI5Ubt0

https://www.youtube.com/watch?v=sNUX9nS4L9s

Dump the fairing and it’ll be a great classic machine and probably a lot easier to ride than the Desmo. So, if the price is right and you want it, buy it

Outtomunch
31-12-17, 14:19
.............

PS on further investigation I think the Strada was made in Italy whilst the Forza was made in Spain:

https://www.youtube.com/watch?v=XskRBI5Ubt0

https://www.youtube.com/watch?v=sNUX9nS4L9s

Probably a good thing.

IIRC some of the Spanish built ones were a bit shoddy and not well put together, whilst some years production were good ~ I think you really need to know what you're looking at with the Spanish ones.

Now what you REALLY need is an old Sanglas 500 :)

Andres

Simon_100
01-01-18, 06:53
Dump the fairing and it’ll be a great classic machine and probably a lot easier to ride than the Desmo. So, if the price is right and you want it, buy it

Cheers EBBO and before I break my New Year's resolution not to hijack other people's topics already here's a few tips:

You'll be pleased to discover that there's no head gasket - Ducati made 'em gas tight :) - but there is a tiny rubber '0' ring for the oil line that you have to replace every time to whip the head off to drool at your valves. Back in '77 these cost about 90p at the Ducati counter - this was when a week's pay was about £30! - while down at the Yamaha counter for about 6p you could buy identical rings for the float drain on a FS1E (another great project for someone - all I had back then was the use of my mum's Mobylette - and testosterone made me ride it all the way - 8 miles! - into Shrewsbury every Friday and Saturday night for some underaged drinking and heavy petting up an alley while the last bus went its way just after closing time ....

... now what was I saying about wandering off topic! :) You'll also want to change the oil every 1,000 miles as if I remember rightly the sump only held 1 litre!

I worked with a guy who'd converted his 250 Mk III to 12 volts and he gave me a copy of the method - Xeroxed back then! I think it was him who said the Haynes manual was crap although I can't really see why. :thumby: Anyway, as you look to be rebuilding the wiring from scratch it strikes me as a good idea to do this - it might be worth asking Andy about this as he's a clever sod!

So, have you made an inventory of the bike, parts missing etc. yet? I must say this thread is really getting me keen to knuckle down and do something similar! :)


Probably a good thing.

IIRC some of the Spanish built ones were a bit shoddy and not well put together, whilst some years production were good ~ I think you really need to know what you're looking at with the Spanish ones.

Now what you REALLY need is an old Sanglas 500 :)

Andres

Actually that was 'Plan A' Andres. Sanglas's are really lovely bikes and fairly easy and cheap to come by here. Until now my idea has been to fill a gap in the underground bunker where I keep my bikes and 'classic' NIVA once the extensive building works on our house is finished, hopefully before July, and spend the 'change' out of my lump sum of toys such as these - not forgetting a Renault Traffic for Mrs S and the Malamute!

But this a a Ducati were talking about so all common sense goes out if the window as even then @ €1,500 I think I can give myself an 'advance payment' - I'm just waiting for a good time to speak to Mrs S ...

Moreover, the bunker is in Tremp, that is to say surrounded by some of the best roads in Europe and good though they are a Sanglas will only be fun for looking at the scenery - nice as that is - but did I say it's a Ducati were talking about! :) It's not just about nostalgia - although my 350 Mk III gave me the best biking fun I ever had and is the only bike I regret selling - I want a bike that is fun to ride too.

Back to your point about quality. All Ducati's of those years were a mixed bunch - my Italian built 450 DESMO was a pile of crap - although the Spanish one's did have a mixed reputation, i.e. the (in)famous 24 Horrors racing models imported into the UK in 1971. But the vey desirable Scrambler models were actually manufactured in Spain and assembled in Italy before being exported to the US - as well as a few falling off the ship at Southhampton, including the one owned by a bloke down my street in Oxford who also had a girlfriend who was a dead ringer for Debby Harry - B*****d, B*****d, B*****d!!!

I've just spent a pleasant hour reading up the history of Mototrans, the Spanish firm that built Ducati's while import restrictions were in force and see that the Strada was built very much at the end, when it was almost a matter of using up parts in stock before the receivers came in ... but the 1981 model, i.e. the one eon sale, with a disk brake on the front looks OK, at least in theory, as it didn't introduce any untried modifications.

Oh, well. I've mailed the seller, a big firm a day's drive away up in the Basque County, and may make them a silly offer. They're near San Sebastian, which Mrs S and I have always wanted to visit - so if anyone knows a good hotel that is OK with 45 kgs monster dogs we could see some progress! :D

Meanwhile - phew! - °Feliz aŮo nuevo!

Simon

ebbo
02-01-18, 20:01
Simon, I haven’t an inventory as such, that’s too organised for me! What I’m doing right now is try to sort out re sleeving the master cylinder and trying to find the clutch lever mounting (which also carries the choke lever and light switch).

Outtomunch
03-01-18, 08:48
.................................

Actually that was 'Plan A' Andres. Sanglas's are really lovely bikes and fairly easy and cheap to come by here. Until now my idea has been to fill a gap in the underground bunker where I keep my bikes ................................
But this a a Ducati were talking about so all common sense goes out if the window ......................................

Oh, well. I've mailed the seller, a big firm a day's drive away up in the Basque County, and may make them a silly offer. They're near San Sebastian, which Mrs S and I have always wanted to visit - so if anyone knows a good hotel that is OK with 45 kgs monster dogs we could see some progress! :D

Meanwhile - phew! - °Feliz aŮo nuevo!

Simon

And bon any nou to you :beerjug:

Sounds like you've got your heart set and for all the right reasons :) Good luck :thumb2

Without wishing to hijack the thread I'm on the look out for a good, restored Bultaco 370 MkII Frontera. I'm currently talking to a guy near Benidorm who has a lovely one but the discussions aren't going well so.....if you know of one or come across one whilst Ducati shopping please let me know as I need an excuse to pop down to Spain soon :bounce1

Andres

ebbo
03-01-18, 15:39
Progress report: Got the work bench cleared and got the frame on it! hurrah!!

ebbo
03-01-18, 15:45
Started trying to get the centre stand pivot out, its seized solid of course. It was seized 40 years ago too by the look of one end, its all mushroomed over from being bashed with a hammer. It's normaly held with circlips, the other end had two, none at all this end :D

So it was out with the blowlamp and got the pivots steaming hot, then feed it with very thin oil which it seemed to drink up ok (capillary action I hope). Tomorrow I'll get some 8mm rod and try and draw it out.

PS, The frame has been repainted, I had wonderd.

Simon_100
04-01-18, 08:04
Simon, I havenít an inventory as such, thatís too organised for me! What Iím doing right now is try to sort out re sleeving the master cylinder and trying to find the clutch lever mounting (which also carries the choke lever and light switch).


Ha ha, maybe 'inventory' is too posh a word but I can't think of another. But I wonder if the time lost searching for missing parts is one of the main reasons that so many projects seem to fail ... I guess it will help if you're not looking to do a 'concourse' bike with everything 100% original - remember that a lot of parts from this Ducati days were a) junk, and b) no two Dukes seemed quite the same anyway! I remember Laverda's great advantage was tat they used Suzuki switch gear, hence brake/clutch assembly all in the same cluster ...


And bon any nou to you :beerjug:

Sounds like you've got your heart set and for all the right reasons :) Good luck :thumb2

Without wishing to hijack the thread I'm on the look out for a good, restored Bultaco 370 MkII Frontera. I'm currently talking to a guy near Benidorm who has a lovely one but the discussions aren't going well so.....if you know of one or come across one whilst Ducati shopping please let me know as I need an excuse to pop down to Spain soon :bounce1

Andres

Ha ha, well spotted amic meu!

You shouldn't have too much trouble finding Bultaco's here - one here (https://www.milanuncios.com/motos-clasicas/bultaco-frontera-370-mk11-211487691.htm) for starters! - why the Mk II in particular?

Meanwhile my 'dealer' is pissing me about a little - not so unusual - but at least it gives me more time to choose the moment to speak with Mrs S - sourcing a new rear shock for the Beta Alp for just Ä300 rather than a Wilbers @ Ä550+ is a step in the right direction ...

Regs

Simon

PS Andres - I guess you're Spanish/Catalan?

ebbo
05-01-18, 17:00
Ha ha, maybe 'inventory' is too posh a word but I can't think of another. But I wonder if the time lost searching for missing parts is one of the main reasons that so many projects seem to fail ... I guess it will help if you're not looking to do a 'concourse' bike with everything 100% original - remember that a lot of parts from this Ducati days were a) junk, and b) no two Dukes seemed quite the same anyway! I remember Laverda's great advantage was tat they used Suzuki switch gear, hence brake/clutch assembly all in the same cluster ...


I'm working toward as finish as close to original as I can, the time scale is to be on the road for Spring. So far I'm finding metalwork better than Jap that I'm used to. Swing arm pivot pin is massive and the steel is rock hard, I've had to stone off the ends to get it to fit nicely through the swing arm, the bushes are bronze? and have grease ways cut into them.

Outtomunch
05-01-18, 18:21
..............



Ha ha, well spotted amic meu!

You shouldn't have too much trouble finding Bultaco's here -.............

Regs

Simon

PS Andres - I guess you're Spanish/Catalan?

Thanks Simon :)

I'll drop you a PM over the w/e rather than clog up ebb's thread :beerjug:

Andres

ebbo
05-01-18, 20:24
Trying to draw out the centerstand pivot with a draw rod and lots of heat was a total waste of time, heat and effort :rolleyes:

I ended up cutting the stand free from the frame then cutting the pivot out of the stand with side cuts. I then used heat and the vice to push them through. Sounds easy, took three nights :D

ebbo
05-01-18, 20:25
Stud extractors arrived, can't budge the seized brake nipple, bollox, but at least I havent snapped the extractor :P

dean0n0
05-01-18, 20:31
Stud extractors arrived, can't budge the seized brake nipple, bollox, but at least I havent snapped the extractor :P

Andys suggestion of left hand drill bits then?

ebbo
05-01-18, 21:14
Andys suggestion of left hand drill bits then?
Maybe, I haven't drilled down too far or too wide so it's a possibility.

After this I still have to get the old pistons out and they is well stuck

dean0n0
05-01-18, 21:27
Get the bleed screw sorted then connect back up to a master cylinder and see if pressure will persuade them?

ebbo
05-01-18, 22:35
Get the bleed screw sorted then connect back up to a master cylinder and see if pressure will persuade them?

I'll try the air line, I'm a long way from having a working master cylinder yet :(

Simon_100
06-01-18, 05:50
Thanks Simon :)

I'll drop you a PM over the w/e rather than clog up ebb's thread :beerjug:

Andres

Good idea Andres, life is complicated enough without talking about Spain in public ... :toungincheek

... and before I go off :topic any more just to say that the 250 Strada is a great little bike but I can't spend any money just now with the building going on :mad: but it'll be a useful benchmark for what to aim for maybe this time next year!

Regs

Simon

Voyager
06-01-18, 10:52
I'll try the air line, I'm a long way from having a working master cylinder yet :(

I've done that successfully in the past - but wrap a towel or something large around the caliper, there is a hell of a bang when they pop and someone could get hurt by flying parts !

Bob.

Simon_100
06-01-18, 11:31
I've done that successfully in the past - but wrap a towel or something large around the caliper, there is a hell of a bang when they pop and someone could get hurt by flying parts !

Bob.


OMG - I still have nightmares about helping a mate shift the front fork spring spacers on his Suzuki 250GT - the one with the Ram-Air thingy - the 'procedure' was him pushing the bike like billy-oh until I slammed on the brakes. About 30 seconds later - it seemed much longer at the time! - we heard a 'crash-tinkle' as both spacers landed on a nearby roof, rolled down to the gutter where we recovered them both with a borrowed ladder - not before I realised that I'd nearly blow my f***ing head off! :)

Regs

Simon
PS I've tell you all about 'Simon_100' on another thread (http://www.ukgser.com/forums/showthread.php/472082-%A1Adios!-The-Spanish-Biker-and-%A1Hola!-Simon_100?p=4946955#post4946955)

digga
09-01-18, 18:35
mate of mine uses a grease gun to pressure the pistons out - again wrap the calliper to save the trouble of grease and bits all over the lounge :)

Simon_100
09-01-18, 19:00
mate of mine uses a grease gun to pressure the pistons out - again wrap the calliper to save the trouble of grease and bits all over the lounge :)

Sounds like the plot of one of those forensic murder detective series! :)

Regs

Simon

Simon_100
11-01-18, 20:27
This is relevant to ebbo's tread if only to keep him motivated ...

Bitter, bitter irony dept. - we went over to Andorra yesterday to take a glim at some f***-off expensive Italian cookers, dishwashers, etc. before sneaking home and buying the same on-line, the way you do.

Among other things these gewgaws* are responsible for me not having any spare dosh to buy that 250 Strada which is still for sale in tatty but original condition - a bit like me really! :) - but in one store my eyes nearly popped out of my head when I saw this little beauty 'hiding' at the back of the enormous showroom:

https://thespanishbiker.files.wordpress.com/2018/01/imgp0990.jpg

While I was snapping away the elderly owner, of the shop as well as the bikes I guess, strolled over and was gobsmacked when I told him I'd owned two single cylinder Ducatis back in the '70's - when I was about twenty-two!

Bad place for photos but a few details for ebbo's restoration and just drooling in general:

https://thespanishbiker.files.wordpress.com/2018/01/imgp0989.jpg

I'd forgotten just how absolutely tiny these bikes are - I suppose the modern day monster bikes have doctored my perception but I don't recall thinking them so very small at the time - mind you the Mk III's and the other bikes, e.g. the Strada that I've been looking at have 19" wheels in place of the 18's here so that makes some difference and now I come to think of it I do recall noting the difference when I got my 450 Desmo.

https://thespanishbiker.files.wordpress.com/2018/01/imgp0986.jpg

Both of my bikes had the twin sided single leading shoe drum brake on the front. IMHO a better brake than the disk at that time, given the useless pad materials. And I guess ebbo would give his back teeth for this variant given the PITA the disk has been ...

The headlight doesn't look right, seeming more at home on earlier models like the 24 Horas and I wanted to fit a full chrome one like a guy - Paddy? a mechanic not one of the owners - at Oxford Motorcycle Engineering had done on his 250 Desmo back then. This bike only had a speedo mounted on a home made ally plate rather than the speedo-rev counter unit made by Veglia - known as 'Vaguely-a' for obvious reasons - and that mirror sucks. Neither of my bikes had mirrors at all - oh those were the days ... and not so dumb as you wouldn't have been able to see anything in them anyway - apart from the occasional blue flashing light! :)

https://thespanishbiker.files.wordpress.com/2018/01/imgp0987.jpg

That seat unit is probably the best thing about the Desmo - arguments please!

https://thespanishbiker.files.wordpress.com/2018/01/imgp0988.jpg

Apart from that amazing engine ... but you can just make out a Dell'Orto carb which on my 450 Desmo was crap - so if you have the same dump that and fit an oversized Amal concentric like I had on the Mk III - more arguments please ... :)

https://thespanishbiker.files.wordpress.com/2018/01/imgp0992.jpg

Moving totally off topic, encouraged by our little chat about the Ducati the old chap showed me his pride and joy way out in the back of the store - a Motobacane - even Mrs S was enthused by then so you never know ...

Regs

Simon
* actually Mrs S is an amazing cook and once you've had a dishwasher there's no going back ... :)

Sandtribe
11-01-18, 22:46
moto Di Marino in West Sussex May also be worth a shout for parts and advice etc
https://www.dimarino.co.uk
Good luck!


Sent from my iPhone using Tapatalk

Simon_100
12-01-18, 06:32
The headlight doesn't look right, seeming more at home on earlier models like the 24 Horas and I wanted to fit a full chrome one like a guy - Paddy? a mechanic not one of the owners - at Oxford Motorcycle Engineering had done on his 250 Desmo back then. This bike only had a speedo mounted on a home made ally plate rather than the speedo-rev counter unit made by Veglia - known as 'Vaguely-a' for obvious reasons - and that mirror sucks. Neither of my bikes had mirrors at all - oh those were the days ... and not so dumb as you wouldn't have been able to see anything in them anyway - apart from the occasional blue flashing light! :)

I've just remembered that he eddied that this bike had been exported to the USA for racing, this would explain the non-standard headlight and speedo 'assembly' :)

Regs

Simon

Outtomunch
12-01-18, 09:28
This is relevant to ebbo's tread if only to keep him motivated ...
...........................

Wow!

That's really beautiful and yellow, the only colour for a baby Desmo! I actually really like the light unit (very popular on the modern crop of Hipster bikes at the mo).

The scooter looks rather special too ~ what's the blue bike in front?

Andres

ebbo
12-01-18, 19:33
Work stopped for a flu break, to be resumed quite soon

PS, I would like the drum front brake but it’s not as I remember them in Jax bike shop

Simon_100
13-01-18, 06:15
Wow!

That's really beautiful and yellow, the only colour for a baby Desmo! I actually really like the light unit (very popular on the modern crop of Hipster bikes at the mo).

The scooter looks rather special too ~ what's the blue bike in front?

Andres

I didn't say that I didn't like it!

The blue bike was a Peugeot - much better at bikes than cars perhaps ... :green gri

https://thespanishbiker.files.wordpress.com/2018/01/screen-shot-2018-01-13-at-07-11-52.png


Work stopped for a flu break, to be resumed quite soon

PS, I would like the drum front brake but it’s not as I remember them in Jax bike shop

Ugh! There's a genuine epidemic here so I'm staying up here in our isolated village! :)

I think you're right about the brake, I don't remember that air intake although they were very popular with racers to improve cooling and that passed on to the cafť brigade.

Keep up the good work! :)

Simon

ebbo
22-01-18, 20:13
Work slowly restarted after the flu bug (it really takes it out of you...)

Head races knocked out, bottom one came out quite easy, top one was a fair bit tighter. Both were in quite a state, this picture is after a bit of a clean up.

You can buy new ones in S/Steel, we'll have to wait and see.

ebbo
26-01-18, 22:18
Lots done today prepping for paint. Air and toolbox trial fitted and I'm so glad I did! No way did these boxes ever fit when it was assembled in Bolognia! Brackets hammered into the right position, weld ground off and one elongated hole elongated even more. When these come back from painting they will just drop in place now :thumb

ebbo
26-01-18, 22:26
The fork legs are to be painted black so I've been working on them. Good news was the stanchion tubes do fit (they had been re chrome some 30+ years ago but never reassembled).

Bad news a stud sheared off, Drilled it out to 7mm and chased it out with an 8mm tap, all good

Simon_100
27-01-18, 10:52
Great to see you back in action. How is the master cylinder coming along?

Simon

ebbo
27-01-18, 20:09
Great to see you back in action. How is the master cylinder coming along?

Simon
The service kit arrived Friday after three weeks wait :rolleyes:
The company I was going to have resleave the master cylinder wanted me to tell them what the bore size is :nenau I was thinking of putting the new piston in and check the gap with feeler gauges to work out the bore size, but who gets the job is a bit up in the air now.

ebbo
28-01-18, 18:00
So I've measured the piston at 15.84mm I can just get a .06mm feeler gauge in to the bore with the piston. So the bore is close to 15.9mm I'd guess.

AndyB_11
28-01-18, 19:51
So I've measured the piston at 15.84mm I can just get a .06mm feeler gauge in to the bore with the piston. So the bore is close to 15.9mm I'd guess.

If you need an accurate size and can wait a week Iíll post you some bore gauges up but youíll still need a 0-25mm outside mic to use with them.

Simon_100
28-01-18, 20:16
If you need an accurate size and can wait a week I’ll post you some bore gauges up but you’ll still need a 0-25mm outside mic to use with them.

Told you he was a clever bastard! :)

Meanwhile, still dreamin'


https://www.youtube.com/watch?v=zcwo3Pu3zd8

One up for sale for €3.5K! Nice, and three disk brakes to worry about ...

Regs

Simon

Ps forget those horrible white wheels, the originals were 'gold' ...

steve hughes
28-01-18, 20:24
That looks tidy

ebbo
29-01-18, 07:44
If you need an accurate size and can wait a week Iíll post you some bore gauges up but youíll still need a 0-25mm outside mic to use with them.

Thanks Andy but I'm just going to post it off with the old piston and let them sort it out, I'm sure I'm making far too much fuss over it, after all, it's only the front brake :D

Outtomunch
29-01-18, 10:18
Really, REALLY sorry for the hijack ebbo but;

SIMON, pay yer subs, I can't PM you :D

Andres

Simon_100
30-01-18, 04:53
Really, REALLY sorry for the hijack ebbo but;

SIMON, pay yer subs, I can't PM you :D

Andres

Done, I've been hanging fire as last year I paid up and then an automatic renewal happened and it took a bit to sort it all out! Any probs mail me on gmail @ info.tsbg

Regs

Simon

Simon_100
30-01-18, 04:58
That looks tidy

No apologies for me for 'raiding' Sir Ebbo's topic! :) The original lined paintwork shows the angular nature of the tank, seat, side panels and makes them into a 'unit' - well ahead of its time and a real looker IMHO.

https://thespanishbiker.files.wordpress.com/2018/01/screen-shot-2018-01-30-at-05-56-05.png

Not very hard to find here in Spain - sadly money is ...

Regs

Simon

Tunneruk
30-01-18, 11:59
Hi fella, I've just resurrected our email conversation regarding the paint :blast

ebbo
30-01-18, 21:22
Hi fella, I've just resurrected our email conversation regarding the paint :blast

I've replied Chris, all good :thumb2

Ogmios
31-01-18, 13:00
:popcorn :thumb2

Number 6
01-02-18, 14:24
......... I wasn't too surprised when the bleed nipple sheared off the brake caliper :rolleyes: I'd used lots of heat but not enough it seems :blast



Have you got this out yet? If not you need someone with a Mig welder. Place a steel washer over the nipple and slowly build up with weld until you have enough to get hold of with mole grips. It WILL come out and won't cause any damage if done carefully. :thumb

ebbo
01-02-18, 21:25
Have you got this out yet? If not you need someone with a Mig welder. Place a steel washer over the nipple and slowly build up with weld until you have enough to get hold of with mole grips. It WILL come out and won't cause any damage if done carefully. :thumb

These nipples are really tiny and the side walls are so thin now I really think a mig welder would just burn it away, I have a cunning plan involving a bag of Alum powder that might just work, we shall see

ebbo
01-02-18, 21:35
Took a car load of bits going to TripleS (http://www.triple-s.co.uk/) in Bingley for powder coat today :thumb2

Wife seems to be tuning into the possible cost of all this, she has no idea :blast:(

Yes, that really is a pair of airer frames

Simon_100
02-02-18, 04:07
Took a car load of bits going to TripleS (http://www.triple-s.co.uk/) in Bingley for powder coat today :thumb2

Wife seems to be tuning into the possible cost of all this, she has no idea :blast:(

Yes, that really is a pair of airer frames

Now that's what I call diplomacy :) Actually I'm on the lookout for a 'dolly'* for similar reasons!

Regs

Simon

* don't look it up on Google!!!!

ebbo
07-02-18, 16:23
Picked up all the parts from TripleS today, what a great job! Everything looks to have been masked off perfectly and the shine on the gloss black is super :clap

The fork legs and yokes are textured satin black, the yokes look superb but the fork legs look a bit coarse in places but I'm going to roll with it, it'll look terrific!

Outtomunch
07-02-18, 16:51
That looks a lovely job ebbo, the mudguard is super deep and shiny :)

Andres

ebbo
07-02-18, 17:05
That looks a lovely job ebbo, the mudguard is super deep and shiny :)

Andres

I don't know how that mudguard survived the years, it is a wee bit pitted but the paint has smoothed it all out and it's solid so good to go :D

ebbo
20-02-18, 19:52
Started on the wheels today, I'm only prepping them before taking them to Ray Thursby for re lacing and general fettling.

These are the offending items :eek:

ebbo
20-02-18, 19:58
The bolts holding the discs and carriers to the hub came undone real easy but the disc was stuck fast on the bearing carrier. I left that for the afternoon soaking in WD40 before attacking it again later on. It came apart with gentle persuasion :thumb2

ebbo
20-02-18, 20:00
The two bearing carriers, the oily one is from the disc side

ebbo
20-02-18, 20:01
The front wheel wthout its carriers and disc - It can carry another disc and the fork leg has mountings for another caliper... Interesting!

ebbo
20-02-18, 20:06
Picking up the rear wheel I found the rear brake pivot was seized rock solid, what a surprise :rolleyes:

ebbo
20-02-18, 20:07
Lots of heat and 3in1 oil started to produce slight movement, more heat and more oil eventually got it fully free. I was very happy at this point :D

<iframe width="560" height="315" src="https://www.youtube.com/embed/BO9Td6qASr8?ecver=1" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

ebbo
20-02-18, 20:13
Then I found I couldn't get brake arm off it's bloody splines :blast

Eventually that too came loose and I got it off, it was still a tight fit on the splines but after cleaning the splines and working the lever on and off some 50+ times in various positions it now slips on and off real easy :thumb2

So, it's off to see Ray later in the week, see what he has to say :thumb2

steve hughes
20-02-18, 20:25
Picked up all the parts from TripleS today, what a great job! Everything looks to have been masked off perfectly and the shine on the gloss black is super :clap

The fork legs and yokes are textured satin black, the yokes look superb but the fork legs look a bit coarse in places but I'm going to roll with it, it'll look terrific!

Youve been done! They have nicked the airer frames!

ebbo
20-02-18, 21:38
Youve been done! They have nicked the airer frames!

Fear not Steve, the airer frames complete with pine lats are hung in the utility room above a big radiator, wife very happy :D

jonnie comet
21-02-18, 01:11
Loving it ebbo......It's cold and wet outside so you might as well just bang on with this.....Crack on !!........:thumb2

ebbo
21-02-18, 08:19
Loving it ebbo......It's cold and wet outside so you might as well just bang on with this.....Crack on !!........:thumb2

Progress so far, airer hung and working :D

Swing arm and centerstand back in the frame

Headstock bearings replaced, Steering lock fitted (the old chrome cover was like new under a thick coat of black paint, the lock itself was like new)

Rear suspension acorn nuts specially made by a man on eBay M10x1mm

Simon_100
22-02-18, 09:12
The bolts holding the discs and carriers to the hub came undone real easy but the disc was stuck fast on the bearing carrier. I left that for the afternoon soaking in WD40 before attacking it again later on. It came apart with gentle persuasion :thumb2

Hmm, obviously Mafia tactics are essential Ducati mechanic's skills! :)


The front wheel wthout its carriers and disc - It can carry another disc and the fork leg has mountings for another caliper... Interesting!

Intersting, my 'fantasy' Spanish made Ducati, the 350 Vento, has twin disks and even a disk on the rear. Maybe a bit OTT given the light weight but certainly impressive!

https://thespanishbiker.files.wordpress.com/2018/01/screen-shot-2018-01-30-at-05-56-05.png

https://thespanishbiker.files.wordpress.com/2018/02/screen-shot-2018-02-22-at-10-16-47.png

Having said that, typical of Ducati singles hardly any two were the same ...

Keep up the good work! :)

Simon

ebbo
22-02-18, 19:04
I really do fancy twin discs, And that harks back to my RD350 which would also have taken a second disc, I just never got around to it. But I’m going to resist for now, I’m sure it doesn’t need it

Simon_100
23-02-18, 19:21
I really do fancy twin discs, And that harks back to my RD350 which would also have taken a second disc, I just never got around to it. But I’m going to resist for now, I’m sure it doesn’t need it

Hmm RD 350, now that was a real motorbike, you've always had good taste I see! :)

ebbo
27-02-18, 15:48
This may not look like much but is in fact a big step forward in restoring the bike, These are the two new fork top nuts. I had no idea where I was going to get these and what made it worse I didn't know what size they were or even exactly what they looked like, Ceriani made quite a few different types around this time. Loads of research on the net and I finally found them on Classic and Vintage Suspension. I had lots of help from the seller Ben and he posted them out with various other fork seals pronto, I had them the very next day. Now I can start putting the forks back together :thumb2

Simon_100
28-02-18, 13:29
This may not look like much but is in fact a big step forward in restoring the bike, These are the two new fork top nuts. I had no idea where I was going to get these and what made it worse I didn't know what size they were or even exactly what they looked like, Ceriani made quite a few different types around this time. Loads of research on the net and I finally found them on Classic and Vintage Suspension. I had lots of help from the seller Ben and he posted them out with various other fork seals pronto, I had them the very next day. Now I can start putting the forks back together :thumb2

Beautiful!!!

Simon

ebbo
01-03-18, 16:57
Damper assembly's ready to go in the stanchion legs. Unbelievably these had survived un disturbed and un rusted laid in a small wooden draw for decades :eek: As far as I could tell, all the parts were in the correct order, all they needed was a wash off in fresh solvent (my favourite, petrol).

Everything was clean and all the working surfaces were lightly oiled with 3in1 oil but the first set would not go in, the piston was binding badly and so was the lower alloy sleeve, all they wanted to do was jam. In the end I had to resort to fine emery paper to smother down the piston and sleeve, then it slide in as if nothing had ever been wrong :blast

ebbo
01-03-18, 17:03
Fork legs just about full built but with no oil, drain plugs, mudguard studs or axle pinch bolts.

I'd show you a picture of them in the yokes on the bike but I can't get them in, they're too tight :rolleyes:

But they do look nice :D

Outtomunch
01-03-18, 17:07
Great stuff and Ebbo, thanks for the link to the suspension guys, very useful for my Bultaco :thumb2

Andres

ebbo
01-03-18, 17:31
Great stuff and Ebbo, thanks for the link to the suspension guys, very useful for my Bultaco :thumb2

Andres
Talk to Ben, he’s a very helpful guy :thumb

You can get in touch via Facebook too

jonnie comet
01-03-18, 18:03
Great stuff ebbo....:clap

When you started this I really thought that you had your work cut out, but it's now all coming together nicely.

Very well done Sir......:thumb2

Bendy toy
01-03-18, 18:07
Iíve just done my Suzuki Kettle forks.
Remove the clamp bolts and wedge the yoke clamps with a flat screwdriver blade. It wonít need to be knocked in very hard so be careful (of course). Put the blade parallel to fork leg so donít risk catching the chrome.

ebbo
01-03-18, 19:21
Great stuff ebbo....:clap

When you started this I really thought that you had your work cut out, but it's now all coming together nicely.

Very well done Sir......:thumb2

Thank you, but still lots to do Jonnie, wheels, engine, paint, electrics and know doubt a dozen other things I haven’t thought about.

ebbo
01-03-18, 19:30
I’ve just done my Suzuki Kettle forks.
Remove the clamp bolts and wedge the yoke clamps with a flat screwdriver blade. It won’t need to be knocked in very hard so be careful (of course). Put the blade parallel to fork leg so don’t risk catching the chrome.

I don’t want to knock a pair of screwdrivers in just yet. The yokes have been blasted pre powder coating and this has roughened the alloy, I’m thinking of smoothing it down with fine emery and see if that will do it :thumb2

After that I’ll get the screwdrivers and hammer out lol

ebbo
14-03-18, 08:34
Quick update:

Firstly, the wheels have gone in to Roy Thursby for relacing and refurbishment but he's a busy boy and I'm not absolutely sure when I'm getting them back, could be over a month. I should have done it sooner.

Receive my 'Age Certificate' from Peter at the Ducati owners club. You need this to register the bike be it a new age related registration (V55/5) or to retain the original registration number (V55/5 & V765) they need a picture of the bike complete and supporting evidence like an old tax disc etc which I don't have so I might have to have a new age related registration, we'll have to wait and see.

Simon_100
14-03-18, 09:12
Quick update:
Receive my 'Age Certificate' from Peter at the Ducati owners club. You need this to register the bike be it a new age related registration (V55/5) or to retain the original registration number (V55/5 & V765) they need a picture of the bike complete and supporting evidence like an old tax disc etc which I don't have so I might have to have a new age related registration, we'll have to wait and see.

Well my original 1970's Lewis Leathers jacket still fits so I could send you a mug shot of me with it on to photoshop onto an image of the bike - unlike the jacket I look old enough to be the original owner ...:rob:rob:rob

Simon

ebbo
14-03-18, 12:06
Well my original 1970's Lewis Leathers jacket still fits so I could send you a mug shot of me with it on to photoshop onto an image of the bike - unlike the jacket I look old enough to be the original owner ...:rob:rob:rob

Simon
Thanks for the kind offer Simon but that probably wonít cut it :D

Think Iíll wait till itís more together and take a picture of it then, keeping its original reg would be the ideal but itís not a show stopper.

ebbo
15-03-18, 19:48
Did a job tonight I'd been putting off for weeks. Drilling out the broken bleed nipple in one of the caliper half's. Internet said the drill size was 5.2mm but the drill when it came was too tight to go down the hole in the good caliper half so last night I carefully ground it down on a stone till it slipped into the hole.

Tonight with the aid of the wife to sight vertical I drilled down, nice sharp drill btw, I stopped just before the tape mark on the drill then tapped out the tiny stub of the nipple with a piece of stiff wire from the inside,

Good job I stopped when I did, there's very little left of the nipple

ebbo
15-03-18, 19:51
The threads cleaned up real easy with a 6mm bottoming tap, threads look good, think I've got away with it, hurrah!!

Must put that master cylinder back together now!

Tunneruk
15-03-18, 20:03
The threads cleaned up real easy with a 6mm bottoming tap, threads look good, think I've got away with it, hurrah!!

Must put that master cylinder back together now!

That's a real win is that! I once managed to drill out an exhaust stud on an oil head BMW with a pistol drill with the engine in situ. By absolute luck I managed to track it perfectly and pull out what was left of the thread like a spring.

Take every win like that and remember them, the slip ups can easily over shadow them ;)

ebbo
15-03-18, 20:09
That's a real win is that! I once managed to drill out an exhaust stud on an oil head BMW with a pistol drill with the engine in situ. By absolute luck I managed to track it perfectly and pull out what was left of the thread like a spring.

Take every win like that and remember them, the slip ups can easily over shadow them ;)

Too true Chris

walkingpictures
15-03-18, 22:08
Thought you might like to see this link Ebbo,good luck with the build

http://www.bikeexif.com/ducati-250-cafe-racer

Kimbo :thumb2

ebbo
15-03-18, 22:24
Thought you might like to see this link Ebbo,good luck with the build

http://www.bikeexif.com/ducati-250-cafe-racer

Kimbo :thumb2

That is a very pretty bike :thumb2

http://kickstart.bikeexif.com/wp-content/uploads/2018/03/ducati-250-cafe-racer.jpg

dr nosh
15-03-18, 23:04
Have you assembled the forks to the yokes yet.

I have just done this for the Montesa that I am currently building.

Top Tip

The yokes are alloy, and have been vapour blasted (Glass bead + water). I did not want to bang screwdrivers in the slits, having spent hours filing, emerying out previous bodgers bruising of the alloy.

I used a hot air gun to heat up the yoke and the stanchion just slipped in. (When the yoke was cold the stanchion would not start, heating up made the job so easy. No mechanical bashing required).

dr nosh
15-03-18, 23:05
That's a pretty little bike.

Simon_100
16-03-18, 06:32
That's a real win is that! I once managed to drill out an exhaust stud on an oil head BMW with a pistol drill with the engine in situ. By absolute luck I managed to track it perfectly and pull out what was left of the thread like a spring.

Take every win like that and remember them, the slip ups can easily over shadow them ;)

Brings back painful memories of my Laverda back in '79. I manage to break the drill bit inside the nipple - I sold the bike in the end ...

Keep up the good work!

Simon

ebbo
16-03-18, 06:49
Have you assembled the forks to the yokes yet.

I have just done this for the Montesa that I am currently building.

Top Tip

The yokes are alloy, and have been vapour blasted (Glass bead + water). I did not want to bang screwdrivers in the slits, having spent hours filing, emerying out previous bodgers bruising of the alloy.

I used a hot air gun to heat up the yoke and the stanchion just slipped in. (When the yoke was cold the stanchion would not start, heating up made the job so easy. No mechanical bashing required).

That's a good idea Dr. My yokes had been blasted and the surfaces roughed up, all I had to do was lightly run around them with fine wet & dry paper and the legs slipped in. pictures and notes to follow.



Brings back painful memories of my Laverda back in '79. I manage to break the drill bit inside the nipple - I sold the bike in the end ...

Keep up the good work!

Simon

I never gave it a thought the drill might snap, it could have snagged and snapped but it just drilled down very straight. It was good to see signs of the threads evenly around the inside of the hole as the drill went down.


Orderd another heap of parts last night to service the caliper :thumb2

ebbo
16-03-18, 11:37
More brake success today with the master cylinder basically rebuilt.

The master cylinder had come back a while ago and the sleeve it had had fitted was perfect, now it was time to refit the piston assembly. Good job I'd kept the original parts as they'd dropped out or I'd have no idea the order they go back, the Brembo instruction sheet that came with the service kit was totally useless. Most important to note is it's the last metal ring (red arrow) around the rubber seal that holds the assembly in place, rather obvious now but not at the time. It was tapped into place with an extra deep 14mm socket which was perfect for the job.

Fluffy Bridges
16-03-18, 15:49
That's a pretty little bike.

Isn't it though?

If I were to stumble over a wire wheeled Duc 250, that is how I'd finish it.

Peachy.

jonnie comet
16-03-18, 18:08
More brake success today with the master cylinder basically rebuilt.



.......:clap.......

ebbo
19-03-18, 11:45
The Brembo brake caliper is back together, but first let's remind ourselves how it look at Christmas :eek:

ebbo
19-03-18, 11:49
The caliper halves were washed, scoured with old green kitchen scourer and washed again and again. The main seal beds were scrapped out with broken pieces of tooth pick (quite a bit of unseen crud came out)

ebbo
19-03-18, 11:51
New pistons (teflon coated!! Oooh!)

ebbo
19-03-18, 12:03
Main seals in and pistons in with a good coating of Brembo brake grease to help them bed, same with the dust seals. It all goes together lovely with that slippy grease :D

ebbo
19-03-18, 12:05
Don't forget the important little O ring to seal the caliper half's :rob

ebbo
19-03-18, 12:10
Back together with shiny new bolts and stainless steel bleed nipples - it's not tightened up yet, I'll probably do that on the bike as according to my old BMW Clymer manual the torque setting is ft-lb 43-46, Brembo themselves keep it a secret :rolleyes: :blast

Fluffy Bridges
19-03-18, 15:30
A thing of rare beauty - the nipples set it off beautifully! :D

ebbo
19-03-18, 17:26
A thing of rare beauty - the nipples set it off beautifully! :D
They are there to draw yours eyes from its otherwise rather haggard appearance :D

Simon_100
19-03-18, 20:26
They are there to draw yours eyes from its otherwise rather haggard appearance :D

Well they have been hanging around for forty years or so ... :)

Regs

Simon

Tunneruk
21-03-18, 08:55
Just seen this pop up on Ebay ....

https://www.ebay.co.uk/itm/Ducati-250-MkIII-1973-in-Desmo-trim/222891971951?hash=item33e565956f:g:v0UAAOSwipdasXi c



https://i.ebayimg.com/images/g/v0UAAOSwipdasXic/s-l1600.jpg

ebbo
21-03-18, 09:14
Very rare to see one come up on eBay Chris, it's got issues but nothing that can't be fixed, I'm very likely going for points ignition just because it's easier to maintain, I think this one needs the same

AndyB_11
21-03-18, 17:39
Buy it and break it :green gri

You’d certainly make money on it because parts for them are like rocking horse shit.

dr nosh
21-03-18, 23:21
In the kitchen - Best place:D

Simon_100
22-03-18, 07:38
In the kitchen - Best place:D

I used to keep mine in my bedroom, which was the front room of a shared 2 up 2 down in Oxford, which did little for neither my love life nor my relationship with my house mates - a couple - although luckily 'he' was - and still is - a biker. They're still married - grandparents now! - and we're still in touch!

Meanwhile that does look a jolly good buy. Funnily enough I was daydreaming about my keeping my Mk III, which I owned from '76 until '78, I would have done a similar transformation.

Regs

Simon

Fluffy Bridges
02-04-18, 20:35
Saw this up at Red Marley today, (Eater Monday as usu), thought you might like to see it... Its a 350 and was ridden pretty well.

Simon_100
03-04-18, 06:42
Saw this up at Red Marley today, (Eater Monday as usu), thought you might like to see it... Its a 350 and was ridden pretty well.

That's nice! Gotta be something useful to do on the second most boring day of the year - the other being Good Friday - as most bars were closed even here in Spain!

Simon

ebbo
08-04-18, 07:46
Still waiting for the wheels...

I didn't have much hope for the Verlicchi twist grip but it's actually turned out very nice, sometimes it's good to be plastic. The fittings were all well rusted and the rubber grip is perished to near biscuit hardness. Still, after a good clean up with a tooth brush and new stainless steel fittings it looks like new (the spring is just chrome steel). I haven't decided on grips, I think the OE Verlicchi ones with the bobbles would annoy me

ebbo
08-04-18, 07:53
Rear chain adjusters. I had intended getting the originals re chromed but after a quick clean up I found one was part stripped (bottom left, middle of the thread). A new set was found in America (Guzzino.com (http://www.guzzino.com/)) and shipped over. Nice guy to deal with and fast too.

The new ones do look nice :D

Simon_100
08-04-18, 11:55
Still waiting for the wheels...

I didn't have much hope for the Verlicchi twist grip but it's actually turned out very nice, sometimes it's good to be plastic. The fittings were all well rusted and the rubber grip is perished to near biscuit hardness. Still, after a good clean up with a tooth brush and new stainless steel fittings it looks like new (the spring is just chrome steel). I haven't decided on grips, I think the OE Verlicchi ones with the bobbles would annoy me

Very nice piece of work. I suppose you know all about the hairspray trick?

Simon

ebbo
09-04-18, 07:01
Very nice piece of work. I suppose you know all about the hairspray trick?

Simon

Thanks Simon, I've used the hairspray trick on bicycle handgrips, it does work :thumb

jonnie comet
09-04-18, 17:21
Thanks Simon, I've used the hairspray trick on bicycle handgrips, it does work :thumb

Go on then, it might as well be me....What is the 'hairspray trick' ??......Please.....:)

Outtomunch
09-04-18, 17:52
Nice work ebbo :)


Go on then, it might as well be me....What is the 'hairspray trick' ??......Please.....:)

It lubricates the grip getting it on and then, as it dries, sticks the grip to the bars/throttle. Better than any 'grip glue' :thumb2

Andres

jonnie comet
10-04-18, 05:11
It lubricates the grip getting it on and then, as it dries, sticks the grip to the bars/throttle. Better than any 'grip glue' :thumb2

Andres

Ahhhh.....Thank you, you CAN teach an old dog new tricks.....:thumb2

Simon_100
10-04-18, 11:25
Nice work ebbo :)



It lubricates the grip getting it on and then, as it dries, sticks the grip to the bars/throttle. Better than any 'grip glue' :thumb2

Andres

Got it in one - I'm off for a perm this evening as it happens! :)

Regs

Simon

Simon_100
10-04-18, 11:26
Ahhhh.....Thank you, you CAN teach an old dog new tricks.....:thumb2

Yes, hairspray does com in cans ...

I'll get me coat!

... and for my next trick - anyone know how to fit transit bolts back into a washing machine before you move it, especially when you have a choice of three completely different sets because you're one of the nutters who never throws anything away!

Regs

Perplexed of Spain :)

Number 6
10-04-18, 20:02
Nice work ebbo :)



It lubricates the grip getting it on and then, as it dries, sticks the grip to the bars/throttle. Better than any 'grip glue' :thumb2

Andres

A flat-blade screwdriver dipped in petrol works just as well and is less messy. :thumb

Simon_100
10-04-18, 20:08
A flat-blade screwdriver dipped in petrol works just as well and is less messy. :thumb

But why use a screwdriver when you can just buy new grips? :)

Simon

ebbo
22-04-18, 06:43
Mini update - The very rare and expensive clutch and choke lever assembly finally turned up from the ebay seller (around 3 weeks later than expected). I took it all apart and cleaned everything in petrol. The end of the lever was bent so I took a blowlamp to it and heated it up (I've never tried this before). It took a lot of heat before it felt like it was ready to bend back, the alloy goes into a plastic state, the thin section seems to get the hottest and easiest to bend so you need to take some care. I used a big ring spanner as the bending tool. Anyway, other than putting lots of mini dent into the softened alloy that had to be polished out it's turned out ok I think and will match the Brembo lever quite well.

Simon_100
22-04-18, 08:43
So, from now on we'll have to call you Uri (https://en.wikipedia.org/wiki/Uri_Geller) :)

Regs

Simon

ebbo
22-04-18, 16:45
So, from now on we'll have to call you Uri (https://en.wikipedia.org/wiki/Uri_Geller) :)

Regs

Simonyeabut, this is the real thing, no fakery :D

west coast traveller
28-04-18, 08:40
Necessity is the mother of invention.....brilliant work, loving this thread!

ebbo
03-05-18, 11:18
Six weeks became 3 months, but finaly they are back and they look terrific, until you get close, then they look like well kept polished up 40 year old wheels :D

Before and after, for the life of me I can't get them to show in the right order :blast

Outtomunch
03-05-18, 11:21
Lovely :)

Andres

Khulu
03-05-18, 11:30
Nice work ebbo :)



It lubricates the grip getting it on and then, as it dries, sticks the grip to the bars/throttle. Better than any 'grip glue' :thumb2

Andres

I always used to use Fairy liquid - it does the same job if nobody uses hairspray; think about the environment and all that spray stuff!

Simon_100
03-05-18, 19:01
I always used to use Fairy liquid - it does the same job if nobody uses hairspray; think about the environment and all that spray stuff!

And remember that every time someone says they don't believe in fairies, a fairy dies ...


https://www.youtube.com/watch?v=dyMeaxmYKf8

Oh well ...

ebbo
10-05-18, 21:16
Cup of tea and new tires - Metzeler ME11 3.25x18 F and ME77 3.5x18 R tires plus new innertubes

Before and after pictures

ebbo
10-05-18, 21:25
Rear shocks were brand new Girling gas shocks purchased 40 years ago by the previous owner as part of his planned rebuild, but never used. Now, badly rusted they have been treated with Kurust and repainted. Surprisingly they still have strong damping and don't leak, but one of them will soon because the piston rod has some pitting :blast but they will do for now :thumb2

Simon_100
11-05-18, 04:52
Cup of tea and new tires - Metzeler ME11 3.25x18 F and ME77 3.5x18 R tires plus new innertubes

Nice pair of boots. :)

Keep it coming!

Simon

ebbo
14-05-18, 16:50
This is the corrosion I was speaking of on the damper rod. It's deep and both shocks have the same problem, the seals will last no time at all. I suspect the rods are stainless steel and this is impurities that have rotted out over the last 40+ years, shame on whoever supplied Girling with these.

ebbo
14-05-18, 16:52
I've replaced the spring that came with the original shocks with theses chrome ones that also came with the kit. Improvised a spring compressor and got the wife to insert the caps with a pair of pliers to save here fingers :D

ebbo
14-05-18, 16:53
Shocks temp fitted, like the wheels, if you don't get too close they look very nice :D

jonnie comet
14-05-18, 17:53
.....they look bloody great from here ebbo.....(just down the A64).......:thumb2

ebbo
14-05-18, 18:39
.....they look bloody great from here ebbo.....(just down the A64).......:thumb2
Trust me Jonnie, they are not good, but I’ll be able to bring about various improvements as time goes by.

steve hughes
14-05-18, 20:24
I've replaced the spring that came with the original shocks with theses chrome ones that also came with the kit. Improvised a spring compressor and got the wife to insert the caps with a pair of pliers to save here fingers :D

Elf and Safety Mi Lud,

ebbo
15-05-18, 06:10
Elf and Safety Mi Lud,
I know, I know :D

ebbo
04-06-18, 12:55
So, back off my holls and it's time to get things moving again. This is the bulk of the parts I've taken in for zinc and chroming today.
https://www.allenchrome.co.uk/

There really isn't that much, axle bolts and spacer, two engine bolts, rear sprocket for Zinc and the horn grill for Chrome. It'll take about 14 working days.
Not in this collection is the clipons and the rearsets that will need a little work before going in.

ebbo
05-06-18, 11:39
A little work on the seat this morning.
So this is how I got it with the cover gone. It doesn't matter because it would probably need replacing anyway. I cut the foam off carefully and found the seat under frame was riveted on with steel rivets, they did not want to come off! Grinding, drilling and punching out finally got it apart

ebbo
05-06-18, 11:45
Good job I checked the seat under frame fit to the bike frame, I can tell you it must have been a real bugger to get it on and off. Now it's a good sliding fit and the frame has been adjusted to fit the seat better too. I'll be getting the frame powder coated asap. The seat will need minor repair with glass fibre due to a minor crack :thumb2

jonnie comet
05-06-18, 16:56
....'holls' !!!!!.........SLACKER !!!..........Crack on Sir.........:thumb2

ebbo
05-06-18, 17:46
....'holls' !!!!!.........SLACKER !!!..........Crack on Sir.........:thumb2

Sorry sir :(

ebbo
12-06-18, 15:05
That little crack in the seat got repaired today with a small glassfibre repair kit

This is the crack

ebbo
12-06-18, 15:10
Pic 1 - Glassfibre ground out with an angle grinder
Pic 2 - Three layers of glassfibre mat building up the size of the layers as I went. Quick repair, only took about 30 mins

I put a bit of tape under the crack to stop resin dropping out, seems to have worked out ok

I'll trim it off when its fully set

ebbo
14-06-18, 15:36
More goodies for the bike, an electronic ignition kit and a 12v 120w alternator kit.

The bike did have electronic ignition when it was built but all the parts for it have long since disappeared :( It could be converted back to points ignition or you could try to find the right Ducati electronic ignition parts, but the reality is this new ignition kit should be a sure fire winner! (get it?). The output of the original 6v alternator is a maximum of just 60w mostly I think because some of the alternator coils are meant to drive the ignition directly. So, in the end it just makes sense to go 12v/120w and have a bit more oomph in the electrics :thumb2

Need a 12v Horn now :rolleyes:

jonnie comet
14-06-18, 15:53
More goodies for the bike, an electronic ignition kit and a 12v 120w alternator kit.


I'm guessing that that stuff isn't model specific (as in, not designed specifically for the Desmo 250) ......right or wrong ??

Is it easy enough to fit and get running......I do appreciate that you haven't done it on the Desmo yet, but you may have gone through this whole thing before ?

Interesting stuff....:)

ebbo
14-06-18, 17:24
I'm guessing that that stuff isn't model specific (as in, not designed specifically for the Desmo 250) ......right or wrong ??

Is it easy enough to fit and get running......I do appreciate that you haven't done it on the Desmo yet, but you may have gone through this whole thing before ?

Interesting stuff....:)

The kit I bought is made by a German company called elektronik-sachse https://www.elektronik-sachse.de. It's specific for the 250/350/450 Ducati single, but only because the magnetic cam and sender are designed to fit that bike. The module I'm sure is just programmed to suit whatever bike it's meant for. This one has the benefit of very simple set up. Set the engine to top dead centre and then rotate the pick up carefully till the LED goes out and its set. It also has 9 different advance modes and a two position road or race rev limiter. Probably best of all when starting the ignition is set to top dead centre to stop kick-back (I do like that).

ebbo
14-06-18, 17:27
BTW, I took the seat, tank, guard and side panels in for paint yesterday along with a bunch of decals. You can see the original orange colour I'm aiming for on the seat and panels. A guy selling his own Ducati 250 on ebay tipped me off with the colour code 'Glasurit CE-SY 070.01.' I've seen the Glasurit paint chips, It's very close. Two weeks till it all comes back, fingers crossed

Ringmaster999
14-06-18, 21:25
This is going to be a very special bike. Cant wait to see the paint :thumb2:thumb2

jonnie comet
15-06-18, 00:23
The kit I bought is made by a German company called elektronik-sachse https://www.elektronik-sachse.de. It's specific for the 250/350/450 Ducati single, but only because the magnetic cam and sender are designed to fit that bike. The module I'm sure is just programmed to suit whatever bike it's meant for. This one has the benefit of very simple set up. Set the engine to top dead centre and then rotate the pick up carefully till the LED goes out and its set. It also has 9 different advance modes and a two position road or race rev limiter. Probably best of all when starting the ignition is set to top dead centre to stop kick-back (I do like that).

Ahhhh.....I get it. Many thanks for the reply......:thumb2

ebbo
20-06-18, 11:30
The bits in for Chrome and zinc are back, cost £25

Before & after

PS, sorry about the state of the utility room sink, I use it to wash bits :D

ebbo
20-06-18, 13:36
Spent today building a simple worktable to make assembly easier, it's on casters too so it's easy to push around and work on the bike.

Note the forks and wheels are in, nothing is permanent, I'm just checking out the fit (and the fit is looking good :thumb2).

Simon_100
21-06-18, 06:19
Fantastic, keep up the good work!

ebbo
10-07-18, 05:25
Items from the last few days:

New and old headlamp bulbs (BA20d base), Left 12v Halogen 35/35w - Right 6v 25/25w

ebbo
10-07-18, 05:27
Before and after pictures of the headlamp bulb holder afer a 3hrs soak in malt vinegar :bow

ebbo
10-07-18, 05:34
Before and after pictures of the carburettor thanks to a 'Paddy Ducati' refurb

Carb is a square slide Dell'Orto VHB29AD

ebbo
12-07-18, 12:02
So I found I had a problems with the front wheel bearings going tight when the bearing carriers and disc are bolted up, so tight in fact they locked up. I took both bearings out, cleaned the sockets and refitted the bearings, no change. Giving it some thought over a few days at work I decided to shim one of the bearing carriers off from the hub rather than try and alter the length of the bearing spacer.

One of the shims made up from gasket paper

ebbo
12-07-18, 12:06
Turned out I needed both thick and thin gasket in to set the correct spacing for the bearings. Why this has become necessary I have no idea but I'm quite happy to have shims in there if it fixes the problem.

Both shims (gasket paper) in place.

ebbo
12-07-18, 17:59
The oh-so-rare clutch and choke lever assembly I bought has the wrong spacing and hole size for the CEV light & horn switch :rolleyes:

This is the black plastic base for the switch balanced on top of the perch. The red arrows tell you all you need to know, I'll have to drill and tap it

ebbo
12-07-18, 18:01
Marked up ready to centre punch and drill. The drill I had was over size so I ground it down on a stone so it just passed through a 4mm nut

ebbo
12-07-18, 18:08
The screws were cut down and low-and-behold, it fits!

Micky
12-07-18, 18:12
Good one ebbo :thumb

We're all watching intently and with great interest :thumb

:beerjug:

ebbo
12-07-18, 19:08
Good one ebbo :thumb

We're all watching intently and with great interest :thumb

:beerjug:
Cheers Micky and everyone else, I've been waiting three weeks now for the painted parts to be done and two weeks for zinc bits, hopefull next week... :nenau :thumb2

Ringmaster999
13-07-18, 09:12
Cheers Micky and everyone else, I've been waiting three weeks now for the painted parts to be done and two weeks for zinc bits, hopefull next week... :nenau :thumb2

Yes I remember the waiting when I did my Z650:rolleyes: It will definitely be worth it though and I look forward to seeing the results :beerjug: