Author Topic: CMR TZ750 Build  (Read 2825 times)

jools

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CMR TZ750 Build
« on: July 30, 2017, 02:03:55 AM »
Having received a recent phone call from one of our clubs stalwarts, I was informed that the 2018 International Festival of Speed at Eastern Creek would host a two stroke GP only race for bikes up to 1982 - predominantly aimed at TZ750, RG500 and TZ350 GP bikes - no road going usurpers ! This would be the feature of next years events with some very quick overseas riders coming in to participate in an invitation only race series.

This promptly changed my already rubbery bike prep schedule in order to get my "New" TZ750 motor together to go in the CMR (Spondon Replica) chassis I had made in Canada some years ago and which I managed to get to a rolling chassis stage before shelving the project.

I have been quietly, if not expensively, amassing TZ750 engine internals over the past few years as my original TZ750 engine cases were on their last legs and at that time un-obtanium.

Since then some dedicated and clever chaps in Melbourne have digitally scanned, designed, corrected and improved a set of rare NOS cases and now offer CNC replicas for many many dollars, but what can you do...............

I put my order in and picked up my set at the beginning of 2016. The same guys also produced selector drums and forks, which I picked up while at the Island Classic in January this year.
Also a pair of Titan crankshafts were ordered and delivered from the UK and a friend helped me my lightening my wallet further sor some good used primary gears, gearbox clusters, counter-shaft and ignition shaft parts plus some heads that will need tidying up.

So yesterday armed with a parts book I investigated what I had, but more importantly what I still needed to get this beast together as a reliable unit.

IMG_0844 by Julian Hardy, on Flickr
First off I modified mu "universal stand" to fit the lower case to provide a stable working platform


IMG_0843 by Julian Hardy, on Flickr
These cases are a work of art. The digital redesign allows for correction of shaft pitches to decrease losses through the transmission.

IMG_0845 by Julian Hardy, on Flickr
A lovely pair of Titan crankshafts...........

Armed with a list of required parts, I attacked the web in search of the "consumable" parts which I know will be a nightmare  :o
Plus ce la change, plus ce la memchose

Toop

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Re: CMR TZ750 Build
« Reply #1 on: July 30, 2017, 02:12:59 AM »
It is a great project  8)

James P

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Re: CMR TZ750 Build
« Reply #2 on: July 30, 2017, 03:29:55 AM »
Yes, looking good Jools - keep us informed! I'm sure we all hope your wallet survives the project :) .

Regards,
James

mellorp

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Re: CMR TZ750 Build
« Reply #3 on: July 30, 2017, 07:44:43 AM »
Good stuff Jools :-)
Mellion say If it ain't broke thrash it until it breaks

Paul

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Re: CMR TZ750 Build
« Reply #4 on: July 30, 2017, 11:05:01 AM »
Looks sweet. Don't stop now or you'll never finish it!
the twins:-
TZR250 3xv
TZ250 4DP2

jools

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Re: CMR TZ750 Build
« Reply #5 on: July 30, 2017, 11:33:37 AM »
It is a great project  8)

Expensive........... :o
Plus ce la change, plus ce la memchose

jools

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Re: CMR TZ750 Build
« Reply #6 on: July 30, 2017, 11:38:23 AM »
Looks sweet. Don't stop now or you'll never finish it!

Mate - its taken so long to get here, I have to finish it.

Very disheartening though, spent another 3 hours searching for parts - (bearings, oil seals, circlips etc that are all discontinued) Frustrating as F**K.

For example - do you know how many NOS TZ750 gear selector shafts are out there ? Nil  :(
I'm going to have to make one from mixed parts I think, or ask around the community.  :-\ :'(

Still, faint heart never fucked a fat pig as they say  ;)
Plus ce la change, plus ce la memchose

Toop

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Re: CMR TZ750 Build
« Reply #7 on: July 30, 2017, 12:00:45 PM »
So, It is a great and expensive project  ;D ;)
but it is only one of this class  (-P)
« Last Edit: July 30, 2017, 12:07:49 PM by Toop »

epa police

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Re: CMR TZ750 Build
« Reply #8 on: July 30, 2017, 10:39:42 PM »
I know someone looking for a set of wheels if you need to fund raise  8)

jools

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Re: CMR TZ750 Build
« Reply #9 on: July 31, 2017, 12:40:21 AM »
I know someone looking for a set of wheels if you need to fund raise  8)

Not a full Spondon Rolling chassis then ??  ;D

I will try and get down the lock up this week to dig them out.
Trouble is I'm back at work for the next 4 weeks at least so everything will slip again  >:(

Plus ce la change, plus ce la memchose

EEKNOWS

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Re: CMR TZ750 Build
« Reply #10 on: July 31, 2017, 12:28:02 PM »
Geez those consortium cases and the Titan are some nice work (-P)  Just when you thought IFOS couldn't have got any better  :D

Neal

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Re: CMR TZ750 Build
« Reply #11 on: July 31, 2017, 02:55:08 PM »
Jools I want to get my photo taken on it next year !

What model is it or what will it look like when done ?
unofficial lap record holder --- to be corrected one day !

epa police

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Re: CMR TZ750 Build
« Reply #12 on: July 31, 2017, 10:19:00 PM »
I will have to get my Togashi TZ350 finished for then too. That is also a black hole for cash  ?:-|

jools

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Re: CMR TZ750 Build
« Reply #13 on: July 31, 2017, 10:28:50 PM »
Jools I want to get my photo taken on it next year !

What model is it or what will it look like when done ?
Neal

this one is a Canadian Framed TZ750D+ from 1977 on

my other one is a Standard TZ750E 1978 in Gauloise Livery

TZ750_2 by Julian Hardy, on Flickr
Plus ce la change, plus ce la memchose

mellorp

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Re: CMR TZ750 Build
« Reply #14 on: July 31, 2017, 10:37:20 PM »
Gizza a go Mr :-)
Mellion say If it ain't broke thrash it until it breaks