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Old 09-11-2014, 06:19 PM
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Aussie Mike Aussie Mike is offline
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Join Date: Jan 2001
Location: Sunbury, VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Quote:
Originally Posted by Dimis View Post
Awesome.
...and nice bike too.
Any info on that?
Should you casually want to share, I'm keenly listening.
The bike is based on a 1976 Yamaha XS650. I built it years ago out of home made parts and stuff I found at swap meets. After completing it I hurt my back and wasn't able to ride it for more than about 30 minutes so it's sat in the back of the shed. It's now out on display and I'll give it a freshen up once I finish thes other projects.

It's got a fairly stock 650 motor in it at the moment but I was piecing together a 919cc stroker motor for it. These motors were very competitive in Flat Track against the Triumphs and Harley XR750s back in the day (Kenny Roberts used to ride one). They were also competitive in sidecar motocross and a lot of the bits are based on the mods from those to incarnations. The stroker motor will probably shake my teeth out so I've been contemplating re-phasing the crank from 360 degrees to 270 degrees.



Cheers
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Mike Murphy
Melbourne Australia

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