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Author Topic: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio  (Read 1779 times)

Offline 1fasgsxr

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #10 on: Dec 04, 2018, 16:11:29 »
no matter... I like it!
http://www.dotheton.com/forum/index.php?topic=41083.0

Life is a journey from the maternity ward to the crematorium....

Offline doc_rot

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #11 on: Dec 04, 2018, 16:41:37 »
there will be a year stamp on one of the spokes, that should help narrow it down.

Offline teazer

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #12 on: Dec 04, 2018, 18:02:40 »
Right.  The brakes and disks are interesting in that they have nicely machined adapters.  Agree that wheels do look like GS500 and they would be narrower and more suitable.

They should have the width and year of manufacture cast into the spokes.  that should tell us something.  If the footpeg brackets and caliper adapters were machined by a PO, that was a fancy build for the time.

Offline imwastefull

  • Posts: 41
Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #13 on: Dec 04, 2018, 18:53:51 »
Here's a close up of the wheels. Yeah, the bike has some really nice machined aluminum parts; headlight brackets, brake stays, dash, caliper adapters, really quality machining.

Offline imwastefull

  • Posts: 41
Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #14 on: Dec 04, 2018, 18:55:23 »
Also, here are a couple close ups of my mystery part. It isn't mounted to anything and is connected to the throttle cable.

Offline 1fasgsxr

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #15 on: Dec 04, 2018, 18:57:09 »
Gsxr rear would be 4.5 inches if it's an older model.
http://www.dotheton.com/forum/index.php?topic=41083.0

Life is a journey from the maternity ward to the crematorium....

Offline teazer

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #16 on: Dec 05, 2018, 00:16:26 »
It appears to be a diaphragm type valve and maybe a fuel valve that shuts off flow if the throttle is closed.

Do you see a regular fuel tap (petcock) under the tank and is it possible that that this thing sat in the fuel line between the tank and the carb?

I did a quick google search and an 89-96 GS500 appears to have been supplied with that 3.5" wheel at the back end and an MT17 3.00 at the front with single disk that could be converted to twin disks.
« Last Edit: Dec 05, 2018, 00:33:47 by teazer »

Offline irk miller

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #17 on: Dec 05, 2018, 01:24:52 »
I feel like a disassemble would reveal a lot for that valve.

Offline pacomotorstuff

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Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #18 on: Dec 05, 2018, 07:38:33 »
Digging back through the cobwebs of my mind, the "mystery device" may well be an aftermarket accelerator pump that was offered by a couple of companies back in the early '80's to get rid of the flat spot in acceleration when the throttle was suddenly whacked open on a carbureted bike.
I think one of the big motorcycle magazines even did an install and test on one, using a Honda 750 / 4.
It should have an inlet and outlet for the fuel and is basically a modified automotive accelerator pump - looks a lot like the one on the 850 Quadrajet bolted to my Cadillac 500...
There was some adjustability with the pump kits - different arm position, maybe different orifices, stuff like that - to tailor the size of the shot of fuel the pump sent.
If I can find anything about the accelerator pump kits in my stack of old magazines, I'll post something on the site.
Pat

Offline imwastefull

  • Posts: 41
Re: SR500 RACE BIKE - Tracy body kit - Survivor - Ohio
« Reply #19 on: Dec 05, 2018, 08:46:35 »
Thanks Paco, Irk, Teazer and 1fasgsxr!! I'm glad to know the wheels are from a gs500 and i'm officially CONVINCED that the mystery valve is an accelerator pump.

On to the next big bit... getting it running.
My question to the forum is; What are the least amount of wires needed to start an sr500?
I'd like to fire this heap to make sure the motor is sound. It has coils attached and a plug and wire but thats about it. No key, no headlight loom. I have a feeling that i can run a hot lead to a coil and she may fire up. any suggestions or links to a wiring diagram?