Ducati 250 Desmo Rebuild

Before and after pictures of the headlamp bulb holder afer a 3hrs soak in malt vinegar :bow
 

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Before and after pictures of the carburettor thanks to a 'Paddy Ducati' refurb

Carb is a square slide Dell'Orto VHB29AD
 

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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
 

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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.
 

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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
 

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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
 

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The screws were cut down and low-and-behold, it fits!
 

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Good one ebbo :thumb

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

:beerjug:
 
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
 
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:
 
A new toy has come to play in the ebbo garage. How many times I wished I'd had a lathe!

Sorry its a mess, I've been so excited over this I'm still using it on the delivery pallet it’s bolted to :rolleyes:
 

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First job was to make up a new shouldered pivot bolt for the master cylinder. The old one was rusty and the end of the thread was gone where I'd had to cut the old lock nut off.

The original bolt
 

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So construction is as simple as I could make it.
One S/Steel M6x30mm bolt with the head skimmed off to make it look nice.
The top washer is a thin one cut down to a diameter of 11.85mm so it sits in the alloy housing.
The M6x15mm mild steel sleeve was the main bit turned up on the lathe, diameter I can't remember
Thin washer on the bottom and a new M6 Nylock nut
 

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Bolt fitted and looking very nice :thumb2

Of course, this is simplifying things, it's taken three days on and off to get this far :D

And btw, this is probably the most expensive bolt since the Apollo program!
 

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Bolt fitted and looking very nice :thumb2

Of course, this is simplifying things, it's taken three days on and off to get this far :D

And btw, this is probably the most expensive bolt since the Apollo program!

But oh so worth it for the satisfaction it brings :)

Andres
 
Did you have to bush the lever?

I have made brass 'press in' headless bushes to take out the slop in levers on projects.
 
Did you have to bush the lever?

I have made brass 'press in' headless bushes to take out the slop in levers on projects.

Well done Dr, do you have a lathe?

I didn't need to bush the brake lever, it does have a steel bush in it but I don't think its worn. (Thinking back, the bush outer dia is around 6.96mm so the wall thickness on the 6mm bolt is ermm, very thin)

The clutch lever on the other hand does need a bush. It's straight alloy and it's worn quite oval. It doesn't seem quite so daunting to fix now
 
I don't have a lathe in the current workshop, but it is on a long shopping list and there is space for it.

I used to have access to lathe/mill/materials etc in a former place of work.

A pal local to me will make my parts for me, I have to provide a sketch/drawing and material. (Retired precision eng, so happy being in his workshop).
 
I don't have a lathe in the current workshop, but it is on a long shopping list and there is space for it.

I used to have access to lathe/mill/materials etc in a former place of work.

A pal local to me will make my parts for me, I have to provide a sketch/drawing and material. (Retired precision eng, so happy being in his workshop).

Lucky you, you’ve saved a fortune! :D

What ever you do, don’t go into the RDG Tools showroom in Halifax, brand new Myford lathes made to order :eek:
 


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