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Billd
04-06-16, 21:46
Have just started collecting the bits to build a replica TR750. The frame is chrome moly and replicates the Suzuki works 1975 model with the lay down rear shocks. Have given myself two years to complete it, will not be an exact replica as can't afford the dry clutch. Just want to construct a period looking bike so will stick with the 19" front and 18" rear narrow tyres. Plan on track daying it and perhaps vintage racing it so track only.

Will update this post from time to time. Interested in all your comments and suggestions.

widget
04-06-16, 22:00
Good to see one of these being done...Seen a couple of these in the flesh in Holland.. Awesome sound...

James at BDK racing is pretty good with them..http://www.bdkraceeng.co.uk/TR750s.html

MikeS
04-06-16, 22:07
Love your shed, project sounds good too.

widget
04-06-16, 22:15
I have plenty of water pump impellers if you need one...:aidan

Billd
12-09-16, 21:20
Little update. Have changed the wheels, got a K75 front end on it, making up fairing mounting brackets. Would like to have a complete roller by the end of the year.

Interested in your comments and suggestions.

Billd
12-09-16, 21:22
One more, Scitsu tach and emperature gauge

jonnie comet
13-09-16, 03:41
Just caught up with this thread....watching with interest.....:)

Tunneruk
13-09-16, 06:51
What a great project :clap

Subscribed! ;)

gooey
13-09-16, 16:19
check out www.classic2strokesuzuki.com they may be able to make the cans etc for you.

mikeyboy
13-09-16, 18:52
Hi Bill,
Are those dymags?
Or are you cheating with 7 spoke kwakasaki:bounce1

Billd
13-09-16, 22:48
Good eye Mikey! Took forever with a dremal to grind "Kawasaki" off those rims. If only BSA had made them.............much easier!.

Gooey, thanks for the tip on the cans will look them up.

mikeyboy
14-09-16, 20:47
Heavy metal,lol
Here's mine:comfort

Billd
16-09-16, 16:12
Tunneruk, this is not much of a build thread as it will take another year and a half to finish as it's a side project. When it's ready for paint would like you to be the painter please. This is the bike I wont to replicate at least in appearance.

Neil W
16-09-16, 16:34
Had a gt750 cafe racer in the 80's , motor was tuned to tr750 spec and totally unsuitable for road use (it was originally in a sidecar outfit) and appeared to be petrol cooled rather than water cooled.

Made a lovely noise though.

Take it that you have gone for a 18" front wheel as per original

Billd
17-09-16, 08:38
Neil, yes 18" front wheel . This bike will be for track use only so the motor will be tuned for that application. Will not go dry clutch but rather spend the money on ignition, motor and perhaps 6 speed gearbox as I've been able to source a supplier for the gear sets.

v8legend
17-09-16, 09:12
Keep posting the updates. It'll be interesting to watch progress.

Billd
24-09-16, 19:46
Little update. I was lucky enough to be able to have a good look at Tapis bike (the #8 bike I posted a picture of). Was able to measure all the sundry items up like fairing bracket placements and tach mount and temp gauge mounts and general fairing placement. Finally got a good core motor after two poor ones so a bit of progress there. Goal is to get 90 to 100 horse power . At this point it's still parts collection and working towards a rolling chassie. Got two old Avon am22 and 23's to get it on its wheels. A couple of pictures.

Billd
10-10-16, 20:16
Got the fairing brackets made up and installed. Have changed my mind about the front forks, was going to use a nice set of K75's but 41mm stanctions are not allowed in the vintage class so going with reworked GT750 forks. If anyone is interested in the K75 set c/w axle and Brembo calipers , stanctions Chrome is good, PM me please.

Billd
05-11-16, 15:06
It's rolling. Out of the shed for the first time to day to have a look at it as proportions are not obvious in a some what crowded shed. Sure enough, some issues! The fairing is mounted slightly to far forward and to low at the back. The next phase is having a Aluminium tank made up to fit, the fiberglass one on it id for mock up only and some of it's angles are wrong as well as being 3" to long. It is ,however, a starting point for the final tank fabrication. Once the tank is made it's off for expansion chamber fabrication and fitting. Once that is done will re fit the fairing to accommodate. Have allowed till early spring 2017 for tank and expansion chamber fabrication and have sourced the people to do both. Once that's completed will start on a close ratio 5 speed gear box modification and an engine modification and rebuild.

Tunneruk
05-11-16, 15:13
Tunneruk, this is not much of a build thread as it will take another year and a half to finish as it's a side project. When it's ready for paint would like you to be the painter please. This is the bike I wont to replicate at least in appearance.

Hi Fella,

I've just seen this post (I was in Italy when you posted it)

Of course I'd like to paint it for you :D

Drop me a line when you're ready and we'll go from there!

Keep the posts coming!

theoneandonly
05-11-16, 19:06
allow me to be the first to say ....can i have a go mister ?

mikeyboy
05-11-16, 20:06
Hi Fella,

I've just seen this post (I was in Italy when you posted it)

Of course I'd like to paint it for you :D

Drop me a line when you're ready and we'll go from there!

Keep the posts coming!
Bill you need to get the bodywork to chris NOW he's a busy boy:hide
Chris ,sorry mate couldn't help it:D:D:D:clap

Billd
05-11-16, 20:56
Mikey, I think I need to get the expansion chambers on it and the tank fitted then sort out the cock eyed fairing fitting prior to any body work. Suspect I'm still a year away from a running bike based on work required and money availability. Still have a GT750 restoration on the go that will be on the market in the spring to help fund this........................TR is like a drug!!

Little plug for the 1976 GT750, I'm the 2nd owner less than 3200 miles.

Tunneruk
05-11-16, 21:03
Bill you need to get the bodywork to chris NOW he's a busy boy:hide
Chris ,sorry mate couldn't help it:D:D:D:clap

Hey fella I can roll with the punches! :D

Your bits are nearly finished, you should have them back by .......... easter! :aidan

mikeyboy
05-11-16, 22:04
Hey fella I can roll with the punches! :D

Your bits are nearly finished, you should have them back by .......... easter! :aidan

Result!:blast:P

mikeyboy
05-11-16, 22:06
Mikey, I think I need to get the expansion chambers on it and the tank fitted then sort out the cock eyed fairing fitting prior to any body work. Suspect I'm still a year away from a running bike based on work required and money availability. Still have a GT750 restoration on the go that will be on the market in the spring to help fund this........................TR is like a drug!!

Little plug for the 1976 GT750, I'm the 2nd owner less than 3200 miles.
Best get cracking BIll,
Looking good:thumb

markjackson
05-11-16, 22:18
That's looking just lovely!

I was lucky enough to be sharing a track with one last year, plus a big TZ and other RGs. What an awesome noise the TRs make. :thumb2

I have the same seat unit and, being Tosser sized, have mounted a small subframe on top of the Suzuki seat mounts, to move it up and back 30mm. It means my knees have an easier time and the seat's still not tall, so I have an extra 1" foam too.

Get it sorted for next year's Barry Sheen race Parades at Oliver's Mount and I'll chase you 'round.:)

I'm on the classic blue and white RG in this clip, and I think there are TRs in red and blue.

https://c6.staticflickr.com/2/1710/24808610309_a7acbfd63a_b.jpg (https://flic.kr/p/DNfBwv)RG at OM1 (https://flic.kr/p/DNfBwv) by mark jackson (https://www.flickr.com/photos/106793933@N05/), on Flickr

Billd
06-11-16, 09:36
Brilliant clip Mark!! Suspect it will be me chasing you around

markjackson
06-11-16, 22:14
And don't forget to bring plenty of duct tape (and a spare slow airhead for reduced fear when it rains)! :D

https://c1.staticflickr.com/1/694/21894272816_7649858d69_k.jpg

Mine's in bits at the mo as I've still got to collect my newly repaired swing arm from Harris Brothers, which has started to fail around an old war-wound from the late 70s.

Lester's promised me a little factory tour, so I need to arrange a time when I'm in no rush and he has a (long) while free.

Kid:Sweet shop:D

dannyboy
25-11-16, 12:13
I am thinking about building one as well to run alongside our Yamaha tz 350 at the CRMC which pipes and gearbox are you thinking of using :aidan

Billd
25-11-16, 23:09
Can't afford a Nova 6 speed but have sourced a modified close ratio 5 speed conversion using a new first gear and main shaft along with my gear box internals.

Was lucky enough to have a look a Team Classic Suzukis TR750 (the blue and white pictures I posted earlier) . Plan on getting pattern expansion chambers made up by the same fabrication shop as installed on that bike.

Very interested in hearing about yout TZ350 and your plans for your TR750. Also happy to share any information re suppliers of bits and pieces as well as services but would rather do that via PM's so drop me a note if that's of interest. Post some pictures please of your TZ.

dannyboy
26-11-16, 21:23
if i can figure out how to size them i will that is the pics, i have owned the tz for a long time from when people were giving them away wish i had known, returned to racing about 7 years ago the bike had been under a sheet for a long time my uncle had just retired and was board so i suggested we recommission the tz and do a track day or two soon got fed up with that so jumped into the deep end and the rest as they say is history, the CRMC is simple racing competitive but not silly so we are looking for something to run alongside the tz we know 2 strokes can,t afford a tz 750 so the big suzuki was the next choice a fine looking bike and should be interesting to ride and a challenge to get right
:aidan

Billd
30-11-16, 14:02
Rolled out again today for pictures.....................................littl e by little.............

kevmean
19-01-17, 16:30
Here's the link to the exhaust guy we spoke about today Bill , I'm not sure if he's made any two stroke exhausts but as you'll see from his gallery photos everything he makes is top quality. http://www.aph-performance-engineering.com/gallery.html I would recommend Alan to anybody wanting a quality exhaust system making.

Billd
23-01-17, 16:01
Just picked up the fuel tank. Got it sooner than I expected and very pleased with the result. Expansion chambers next, fabricator for chambers said he can start on them in the next 5 or six weeks. Think my main contribution in a lot of this are finding such talented people!!

jonnie comet
23-01-17, 18:41
I'm chomping at the bit to see this up and running.....Looking good Sir.......:thumb2

Billd
21-02-17, 14:31
Got the radiator cut down and modified and rough fit to the bike. Tank has a cap and outlet fitting, next is exhaust. I think the exhaust was iconic to the TR750 so really looking forward to that phase.

ButtonMoon
21-02-17, 14:34
Is that the same engine that was in the "kettle"?

Great thread BTW

Billd
22-02-17, 15:06
Yes the motor used in the TR750 was based on the Suzuki GT750 motor. The street engine was rated at 67 hp and the racing bikes produce about 120 hp by the mid 70's. I'm going to try for 90 to 100 hp from this one.

ButtonMoon
22-02-17, 15:12
it's looking good !! well done Sir.

markjackson
24-02-17, 21:13
Hurry with those pipes. We want to HEAR the beast! :bounce1:thumb2

Billd
25-02-17, 15:40
Thanks Mark, the only hold up is money or the lack of it! What silencers do you have on your bike or are they custom made?

markjackson
25-02-17, 20:35
https://c1.staticflickr.com/1/671/32957299862_4c9cd8bc6d_b.jpg (https://flic.kr/p/SdjM2Y)Screen Shot 2014-11-06 at 22.47.09 (https://flic.kr/p/SdjM2Y) by mark jackson (https://www.flickr.com/photos/106793933@N05/), on Flickr

They are hydroformed/rotated 'n welded mild steel and were made by Gibson, maybe 10 years ago, but Gibson were sold, so I'm not sure if the new people (Stinkwheels?) are still making a good pipe?

She was shown (at the earliest stage of restoration) on the GIBSON website, from where I screen-grabbed these photos.

https://c1.staticflickr.com/1/631/33072013636_9d7edc16e2_b.jpg (https://flic.kr/p/SosHrE)Screen Shot 2014-11-06 at 22.43.44 (https://flic.kr/p/SosHrE) by mark jackson (https://www.flickr.com/photos/106793933@N05/), on Flickr

Billd
25-02-17, 21:16
Mark, the bike I'm building is a replica of a transitional bike that used a modified street engine. Yours is the real deal ,.................. 500cc racer that inspired a few exotic street bikes . Thanks for posting the pictures. Let me know the next time you race or track day it as I would like to see it.

markjackson
25-02-17, 21:25
Will do.:thumb2

I'm hoping to pick up the swing arm next month (still at Harris after they fixed a crack) and get it together for at least the 2 x 2 day Oliver's Mount race parades in summer. Maybe Dalby Hill-climb too if it runs this year.


I had a big pile of 'Gonna build a TR750 replica" bits, (GT engine, nice wheels, brakes forks, carbs, ignition etc) and a Seeley T500, but sold them all (plus an SP2 road bike, plus a Weslake Triton, plus added to debt, obvs) when chance to get the RG arose.

Like any sensible person I always wanted to be Barry Sheene in the mid 70s* :D

https://c1.staticflickr.com/1/726/31357857033_59335a2aa5_k.jpg (https://flic.kr/p/PLZdpt)Untitled (https://flic.kr/p/PLZdpt) by mark jackson (https://www.flickr.com/photos/106793933@N05/), on Flickr


*when I was 7 (years old, not race number)

Billd
19-10-17, 10:46
Just a brief update. Just got the bike back from Justin Roebury who fabricated the exhaust system. Justin had the actual pipes from Tepi's #8 on hand as a pattern. With this and Justin's fabrication skills I'm very pleased with the result.

Have got the ignition system roughed out, porting the barrel at present. Engine rebuild to commence shortly. With a little luck noise and smoke this spring, will update then

Tarka
19-10-17, 11:18
That left hand pipe's going to keep your knee nice and warm. :D

Is it the camera angle or is the bike biased nose high?
It's very noticeable in the photos without the tank fitted.

mikeyboy
19-10-17, 18:48
Looking good Bill,
Hope I'm allowed a go on it next year:D

Billd
20-10-17, 08:54
Tarka, good observation! The front will be lowered by about 1.5 -2" when ready for the track. The GT750 forks are much to long, have been told that early Honda 750 fork tubes are shorter and can be used with the GT lower legs. If anyone knows which Honda tubes will work please let me know.

Mikey...............if you want a little go once it's set up you can! Suspect mid next summer

Neil W
28-10-17, 18:16
Double check up for the GT500a stanchions , they are the same diameter as the GT750 ones and shorter

Billd
16-01-18, 21:43
Little update. I've now got the bike running, very pleased. Best dyno pull to date is 100.2 hp and 66.4 ft lbs torque. Have had three sessions to get to this point, have got the ignition and carbs dialed in for the conditions. The problem I'm having is getting the clutch to hold, it's at its limit. Will try a couple more things to try and improve it, dry clutch is to rich for me. Still have suspension components to sort out and paint.

It's ingredable loud!!

blueranger
17-01-18, 09:06
Just catching up on this great build......you must be grinning from ear to ear to be hearing it "sing".

snelly
17-01-18, 11:02
Just a brief update. Just got the bike back from Justin Roebury who fabricated the exhaust system. Justin had the actual pipes from Tepi's #8 on hand as a pattern. With this and Justin's fabrication skills I'm very pleased with the result.

Have got the ignition system roughed out, porting the barrel at present. Engine rebuild to commence shortly. With a little luck noise and smoke this spring, will update then

That's looking very nice. Does the nearside carb need different jetting with it being quite close to the spannie?

ReGenesis
17-01-18, 12:03
Did you finish the GT750? If so did you put the extra ram cooling fins on?
Had one in the 80's and wish I'd never passed it on!

Billd
17-01-18, 22:46
I did finish the GT750 and promptly sold it to help finance this project. Sorry, not sure what you mean re ram air fins. The GT750 was all standard when finished

Billd
17-01-18, 22:49
The near side carb is the same as the other side but the centre carb is one jet size smaller, 270 / 260 / 270

ReGenesis
18-01-18, 11:39
I did finish the GT750 and promptly sold it to help finance this project. Sorry, not sure what you mean re ram air fins. The GT750 was all standard when finished

Suzuki did a number of air cooled GT750's with another set of fins that mounted to the heads above the plugs and increased air flow as well as the 185, 250, 380, 550 and 650.
Absolute rocking horse shit even back then in 85

http://www.dogdragons.com/dogdragons/a-2-z/suzuki/gt550.JPG

jonnie comet
18-01-18, 13:20
Suzuki did a number of air cooled GT750's with another set of fins that mounted to the heads above the plugs and increased air flow as well as the 185, 250, 380, 550 and 650.
Absolute rocking horse shit even back then in 85


I say Suzuki didn't make any sort of air cooled GT750.....

Your pic' shows a GT550.....a completely different beast......

Magnon
18-01-18, 13:23
I did finish the GT750 and promptly sold it to help finance this project. Sorry, not sure what you mean re ram air fins. The GT750 was all standard when finished

Come round and fill me in!:cool: Kettles on ooops :augie

Billd
18-01-18, 18:52
Andy, will be round tomorrow so get kettle on!! Hit a wall today, clutch holding and no power increase suspect transfer port floor needs to be lowered but will confer with Matt at BDK to get a more informed view than mine!! Bike is heavy at 181 kg wet so you can tell be about fancy bolts please.

mikeyboy
20-01-18, 20:54
Andy, will be round tomorrow so get kettle on!! Hit a wall today, clutch holding and no power increase suspect transfer port floor needs to be lowered but will confer with Matt at BDK to get a more informed view than mine!! Bike is heavy at 181 kg wet so you can tell be about fancy bolts please.
Hi Bill,wouldn’t you be better off capping the power at 100bhp?
Keep the thing reliable?
Prob daft question:blast

Billd
20-01-18, 22:16
Mikey, your right. In talking with Matt at BDK and having told him it is not a clutch issue he suggested the following. The porting and the pipes come out of sync at 8000 rpm. The bike comes back on the pipe at about 8400 till 9000 and then drops off. Matt thinks the initial pipe header is to short thus the pipe comes in late. All very interesting. My plan now is to finish off the bike and give it a go. Can always play around with expansion chambers later. What you would get a kick out of is the bike just takes having its nuts screwed off on the dyno all in its stride, doesn't appeared stressed at all............. Two strokes are the future!!

Tarka
21-01-18, 11:08
Don't forget that an engine never sounds sweeter and better than in the last moments before it blows up. :D

Fabulous build and I'm enjoying looking and reading about it. :thumb

skid06
21-01-18, 11:20
Don't forget that an engine never sounds sweeter and better than in the last moments before it blows up. :D

Fabulous build and I'm enjoying looking and reading about it. :thumb

+1 ..it will be quick at 100 BHP and 185kg wet, you could lose a few more pounds with these
https://www.protiglobal.com/main.php

ReGenesis
21-01-18, 19:53
I'm aware the pic is of a 550 - it was to show the ram air heads. Few people seem to be aware of them now.
The photos in the family album show they they did indeed make some albeit few and far between.
It sat next to the Jota Laverda and a VF my step dad had that all had "chequered histories" shall we say....
Add those to the numerous Trumpets - grew up a stones throw from the factory and the R&D dept were his snooker teammates so all sorts of unusual beasts were part of my formative years and I'm lucky enough to still have a couple tucked away.

Billd
22-01-18, 10:07
A more current picture

Billd
04-04-18, 11:45
All most finished. Just picked up the fairing from the painters this morning. All decals are painted on as are the stripes, very pleased with the result.

Still need to set up the suspension and then off to Cadwell I guess.

AndyB_11
04-04-18, 11:52
Lovely. I hope it runs well at Cadwell and you have a great day.

Outtomunch
04-04-18, 11:59
Jaw droppingly WOW!

Andres

Timaloy
04-04-18, 12:02
Stunning, absolutely stunning.

jonnie comet
04-04-18, 16:06
A cracking job Sir.....VERY well done.......:thumb2

steve hughes
04-04-18, 17:54
Ive been following this thread for a while and it just gets better and better. That bike looks the dogs danglees. Have a great day at Cadwell and take care with that peaky power!

Steve
Ps Did I say we need some sooooooound !

Oldrat
04-04-18, 17:57
Beautiful, a lovely build

Billd
04-04-18, 19:19
Thanks for your encouraging comments gents, it's taken a while and still not quite finished but close now

Majesty
04-04-18, 19:44
If it's possible for a bike to take your breath away, it just did ;);)

GSchaser
04-04-18, 19:44
Bloody stunning that :cool:

solidstate100
05-04-18, 07:54
F**k me. Given me a bit of a chubby that has.

patzx12
06-04-18, 04:34
A lovely job. Thanks for sharing. That machine will cause a sensation on a track day.

snelly
06-04-18, 19:57
All most finished. Just picked up the fairing from the painters this morning. All decals are painted on as are the stripes, very pleased with the result.

Still need to set up the suspension and then off to Cadwell I guess.

That's a great job You've done there. Don't know if you will be doing much of the classic racing and parading scene; certainly hope so ; looking for to; seeing; hearing; and smelling it.:beerjug: