Author Topic: CMR TZ750 Build  (Read 2819 times)

4l04ever

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Re: CMR TZ750 Build
« Reply #30 on: August 21, 2017, 08:45:10 AM »
Have a look at the Domino throttle pulls, as they do different size pulley parts to get different amounts of pull.
3XV-1 Trackbike
TSA Pipes
30.5mm Carbs
Modified Airboxes
Zeeltronic Ignition System

3XV-1 Trackbike #2 project......

jools

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Re: CMR TZ750 Build
« Reply #31 on: August 22, 2017, 05:12:02 AM »
To be honest Gary I'll take what I can find at the moment, but thanks I'll look into those but pulling 4 slides with a quick action throttle demands wrist of steel!  ;D

I've been doing a bit this last week or so while I wait for the gearbox parts dribbling through the mail box.........

I got the rolling chassis back from the lock up and set to reminding myself where I had left it.

The front wheel is off an R6 and I had made spacers for it before realizing its too big for our rules at 3.75" - we can only use 3.5" and it has the wider centres for disc mounting than earlier Yamahas, so I have a 3.5" x 17" off the TZR that will be made to fit.
The CMR frame now has the R6 triple clamps fitted, which it was designed for, but the R6 forks are 43mm so I hope no-one notices  :o I do have FZR triples and fork legs if I feel really guilty  :))

The rear wheel had a 3XV one stuck in it just to move it around (I knew I had a spare pair of 3XV wheels somewhere when I was looking for some for the 3MA  ::))
The other wheel I had was from an FZR750 (I think) at 5" which I had to get the rim repaired on it. This is the max size I can use and needs some machining on the sprocket side to get it to centre, plus an adaptor for the disc side if I use the small 3XV rear disc.
I worked out it needs about 8mm off the sprocket side/sprocket carrier and about 5mm off the disc mounting face as a starting point. The cush drives will need cutting down slightly too.
I had do something similar when I put a Thunderace swing arm and rear wheel in my FJ12.
Plus ce la change, plus ce la memchose

epa police

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Re: CMR TZ750 Build
« Reply #32 on: August 22, 2017, 05:17:43 AM »
The CMR frame now has the R6 triple clamps fitted, which it was designed for, but the R6 forks are 43mm so I hope no-one notices
I'm going to grass you up  >:D

Neal

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Re: CMR TZ750 Build
« Reply #33 on: August 22, 2017, 06:22:38 AM »
I thought the tz750 in my previous pic had a 180 reAr on it
unofficial lap record holder --- to be corrected one day !

jools

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Re: CMR TZ750 Build
« Reply #34 on: August 23, 2017, 12:12:44 AM »
The CMR frame now has the R6 triple clamps fitted, which it was designed for, but the R6 forks are 43mm so I hope no-one notices
I'm going to grass you up  >:D
LOL, I knew I'd catch a fish somewhere  ;)
Plus ce la change, plus ce la memchose

Hoatso

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Re: CMR TZ750 Build
« Reply #35 on: August 23, 2017, 03:40:29 AM »
Jools,

Motion Pro does good custom cables:
https://www.motionpro.com/motorcycle/custom/

Why total loss? Lighter flywheel? It can be a pain making sure the battery is charged. I would think that a heavier flywheel might tame the beast and give it smoother cornering. I used to swap to a heavier flywheel on days with poor traction.

RC45

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Re: CMR TZ750 Build
« Reply #36 on: August 23, 2017, 04:52:24 AM »
Jools, I have a magnesium 4 way throttle.  I am probably not going to use it, as I now have a pucca magnesium YZR500 throttle.

Let me know if you want details.

Paul
3MA track refugee
YZR500 OW81 replica (under construction)
YZR500 OW53 replica (the track bike)
1RK Silhouette TZ535 (under construction)
2KM (Running!)
NF5 (Running!)

Hoatso

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Re: CMR TZ750 Build
« Reply #37 on: August 24, 2017, 02:44:30 PM »
An inspirational project. I hope you don't tear out too much of your hair getting it together.

In the end, it will be worth it:
https://youtu.be/VbH2vMoGvaw

jools

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Re: CMR TZ750 Build
« Reply #38 on: August 25, 2017, 01:02:18 AM »
What hair ???...........

Paul,

thanks for the heads up on the throttle, I'll wait and see what I've ordered looks like / works like.

Jools
Plus ce la change, plus ce la memchose

jools

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Re: CMR TZ750 Build
« Reply #39 on: August 28, 2017, 02:11:41 AM »
I thought I'd add a few photos of the progress - which isn't great. Although I have 3 weeks before next contract starts I am convalescing from a procedure on my left ear from which the general anaesthetic took a while to get over and I would have been a bit silly to be operating machinery in that state!

So really yesterday was the day I started to get back into it - but as I started I realised that it would be better to install the mill DRO which had arrived last week.

IMG_0897 by Julian Hardy, on Flickr

P8270062 by Julian Hardy, on Flickr
I installed the X axis scales yesterday arvo and took my time as I needed to strip the bed down to accurately drill & tap the cast iron parts.

P8260061 by Julian Hardy, on Flickr
Here is the wheel getting some treatment last week. its mounted on a rotary table on the mill bed which once centred makes the job easier and more accurate.
Plus ce la change, plus ce la memchose

jools

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Re: CMR TZ750 Build
« Reply #40 on: August 28, 2017, 02:16:22 AM »
Here are a few shots of the R6 Triples clamps in place and the forks and wheel.

The Brembo F08 callipers need a bit of magic to make them fit but i have a cunning plan for that.

P8260060 by Julian Hardy, on Flickr
P8260057 by Julian Hardy, on Flickr+

P8260058 by Julian Hardy, on Flickr
You can see the Brembos nearly fit the R6 calliper mounts.

P8260059 by Julian Hardy, on Flickr
This is the wheel that I will probably end up fitting - note the difference in disc mount PCD to that of the R6 wheel.
« Last Edit: August 28, 2017, 02:18:51 AM by jools »
Plus ce la change, plus ce la memchose

paul8899

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Re: CMR TZ750 Build
« Reply #41 on: August 29, 2017, 06:48:13 PM »
Looking good  (-P)

Just out of interest, is the fork with 210mm ?

jools

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Re: CMR TZ750 Build
« Reply #42 on: August 30, 2017, 11:42:51 AM »
I forgot to look today, I'll check tomorrow.

photo of finished DRO Installation - time consuming job...........

P8300066 by Julian Hardy, on Flickr
Plus ce la change, plus ce la memchose

paul8899

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Re: CMR TZ750 Build
« Reply #43 on: August 30, 2017, 09:17:09 PM »
No problem, I might have something hiding in the shed so you can use the r6 discs with the other wheel, unless I've binned them that is. I'll have a hunt around tomorrow.

Your mill looks good  (-P) It does take a while to get a dro fitted doesn't it :)

jools

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Re: CMR TZ750 Build
« Reply #44 on: August 31, 2017, 01:54:51 AM »
Hi Paul,

thanks for the offer but I already have adapters, the problem is we can't use floating discs other than original Spondon or RG500 types, the latter I have but the dish is too deep to use on Yamaha  wheels without machining the wheels, which I'm a bit loathe to do on the 3XV front wheel. So I'm looking at replicating the RG Disc inner part but with the yamaha dish depth - hence the DRO.  ;)
Plus ce la change, plus ce la memchose