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Author Topic: Yamaha R5C - TR3 Race Rep  (Read 5674 times)

Offline Sonreir

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Yamaha R5C - TR3 Race Rep
« on: Mar 07, 2018, 16:12:35 »
I picked up this neglected R5 earlier this week for $1500. It's titled, but hasn't run in a while. It came with some TD3 body work (tank, tail, and front fender) and also included a 4LS GT750 front wheel and brake lever.

Naturally, this calls for a TR3 race replica build. For now, this thread will be mostly a place holder. I have to finish up my T500 build before I get to this one, but I figured I'd at least post up the plans and grab some opinions. I'm not overly familiar with the Yamaha two strokes, so I'll be learning as I go.

Current plan:
*Pick up a fairing to complete the body kit
*Shifter is currently bent, replace that and get news seals onto the engine
*New tires and tubes
*Probably a set of new carbs - VM30s?
*Figure out an oil tank
*Electronic ignition?
*All new wiring and street legal light requirements
*Clip-ons and rear sets
*I have a set of early model GSXR right-side-up forks and triples. I'm going to see if those will fit.
« Last Edit: Mar 07, 2018, 16:18:13 by Sonreir »
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Offline Sonreir

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Re: Yamaha R5C - TR3 Race Rep
« Reply #1 on: Mar 07, 2018, 16:13:20 »
Most of the parts I have, so far.
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

1977 Honda CJ360 - Café SOS - Stage One™, Café SOS - Stage Two™
1976 Puch Maxi - APuchalypse Now
Suzi T500 Cobra Resto

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Offline Sonreir

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Re: Yamaha R5C - TR3 Race Rep
« Reply #2 on: Mar 07, 2018, 16:15:03 »
I'd be fairly pleased if I ended up with something like this.
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

1977 Honda CJ360 - Café SOS - Stage One™, Café SOS - Stage Two™
1976 Puch Maxi - APuchalypse Now
Suzi T500 Cobra Resto

Custom Gauge Graphics
Custom Wiring Harnesses

DTT Red, White, and/or Black 360 Club - Better than those Blue guys

Offline der_nanno

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Re: Yamaha R5C - TR3 Race Rep
« Reply #3 on: Mar 07, 2018, 16:45:39 »
I wonder what kind of beauty is hiding underneath that plastic wrapping...  ;)
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Online cxman

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Re: Yamaha R5C - TR3 Race Rep
« Reply #4 on: Mar 07, 2018, 17:38:02 »
yes where is the t500?
1978 CX650 Super Deluxe
1979 XS1100 Special
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1973 cb750
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1974 kawasaki 350 bighorn
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and a bunch of others

Offline Sonreir

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Re: Yamaha R5C - TR3 Race Rep
« Reply #5 on: Mar 07, 2018, 17:39:40 »
yes where is the t500?

Going in for paint in the next couple of weeks. Fenders and pipes are with me for cleaning before going in for rechroming. I don't think the pipes can be salvaged, so I'm looking at aftermarket options. Engine is sitting on my workbench, with the transmission and crank in place. I need a few hours to button it up.
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

1977 Honda CJ360 - Café SOS - Stage One™, Café SOS - Stage Two™
1976 Puch Maxi - APuchalypse Now
Suzi T500 Cobra Resto

Custom Gauge Graphics
Custom Wiring Harnesses

DTT Red, White, and/or Black 360 Club - Better than those Blue guys

Offline teazer

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Re: Yamaha R5C - TR3 Race Rep
« Reply #6 on: Mar 07, 2018, 19:20:15 »
That would be a nice bike.  What are those pipes?


Online irk miller

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Re: Yamaha R5C - TR3 Race Rep
« Reply #7 on: Mar 07, 2018, 19:49:00 »
How much does that front wheel weigh?  I've always wondered that with those things.

Offline MiniatureNinja

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Re: Yamaha R5C - TR3 Race Rep
« Reply #8 on: Mar 07, 2018, 22:55:16 »
That front wheel and brake is awesome!
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Offline teazer

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Re: Yamaha R5C - TR3 Race Rep
« Reply #9 on: Mar 07, 2018, 23:42:20 »
How much does that front wheel weigh?  I've always wondered that with those things.

About 200 pounds...  OK, so slight touch of hyperbole...  I have had two machined and cross drilled and flanges thinned and they were still so heavy that I sold them off.  And then I managed to score a Yamaha TD3 front wheel for a TZ250 resto and stuff me if that wasn't just as heavy.  OK it was around 8 Kg complete with Rim and spokes and the GT750 is around 9.4Kg for the complete brake including backing plates and axle and torque arms.  Add in spokes and rim and that would make it closer to 12kg.

I just checked my notes and a stock later model GT750 front wheel with disks + tire and tube weighed in at around 12.5Kg plus calipers, so maybe it's not so bad as boat anchors go.

 What I can tell you is they do look pretty good and can be made to work well, but if you ride fast, be prepared to spend some time chasing front end chatter.  A mate of mine back in Melbourne had a Kawasaki A1R replica with that front end and at Broadford it chattered like it had parkinsons or tourrette's.  Not confidence inspiring especially for a slow old guy like me.