drank5 wrote:
I heat cycled it 5 times using 30:1 premix with Motul 710 and avgas.
Any reason why you'd be using AVGAS? Jetting's probably way out for a start. (No jetting discussion in the public forum please.)
Do the RC Valve setup test. Details all over the forum and on the Main Site. If the Valves don't cycle then start looking at the RC servo, the TPS and the PGM. Having spare parts, or better yet a working bike, to swap your parts onto is the best way to go, especially if the PGM is up the duff! You don't want to fit a good one to your bike in case you kill it, else you'll be looking for two!
Put a meter on the battery. IGN off should obviously show 12+ volts. At idle around 14.2V. Rev the bike and you shouldn't see much variation. Spikes and/or dips would suggest the reg/rec. When I had a reg/rec fail I found the usable RPM dropped, and dropped quite rapidly!
As Middo already mentioned, a stator failing can cause those symptoms too. I had a stator fail on my MC21 many years ago when a pulse coil allen bolt decided to work loose and flick in behind the flywheel, which caused to coils to eventually short. Although the motor stopped abruptly (as the pulse coil dropped out of position and I lost spark) I made the terrible assumption that the bolt had fallen out of the holes in the bottom of the flywheel cover! Over time, as the stator windings burnt out more and more, performance of course degraded. I took the stator to our local power tool repair shop who rewound it for me. I was in the hire/rental trade then, so it was far cheaper for me than going to a bike shop!
I'd start off by putting 97/98 octane fuel in it, adjusting the oil ratio (30:1 is way oil-rich for most applications) and checking the jetting is suitable for the state of tune. It's all speculation when you've not even said if it's a stock bike or not!
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Andy.
NSR-WORLD.COM
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