Topic: Dyna 2000 rev limiter?

[scondon]

10K with stock rods for 20K+ miles. My weak link when I blew it was the valve. Damn stock springs don't like going past 10K! Try not to miss 2nd gear.

   Glad to hear that, Rxman   With me on the bike at 90mph I tend to err on the side of caution. Standing next to the dyno, sippin' coffee and shootin' the #$%* is when I become fearless

    APE put a 14,000rpm stamp of approval on the crank. Mike is hesitant to give me the "green light" on the head he built for me, litigation being what it is these days(haha), but I'm sure it's good to 11,000. If I am satisfied with the tune on the CR's when we get it hooked up then I may just spin 10,500 and see if anything blows. Or not, we'll see

I'm not worried about the springs as they are Kibblewhite as are the retainers. If you set the limiter to 10,500 I guarantee the dyno operator will go to 10,500 Sean. Set it to 10,000. I'd be very surprised to see it making power over that figure. Many times we think the engine is making power in the 11,000 range because od tach error. The Dyno will show what's really happening

   You bet, Mike   I haven't stared at the sheet in a while, but I think my other bike stopped making any noticable power gains after 8,000rpm(stock F2 carbs, drilled airbox, stock valves w/ mild porting). If the new bike makes any power gains beyond 9,000 I will be pretty happy indeed

   My curiosity about revs above 9,000 is all about the failure limit of the motor. Taking it up high on the dyno, and having it survive, helps ease my mind a bit when I'm out on the road spinning the motor up through the turns.

 I hope to get the same operator who ran my last bike. He stopped the run right at 10,000 without a limiter(dyna S) and was very careful and consciensious throughout the testing.

[Terry in Australia]

Yeah, I wouldn't be too worried about occasional 10K+ runs on your engine Sean, it's not like you'll be holding those RPMs for any length of time. I happily took my K1 engine (stock but newly rebuilt, with RC studs) way past 10K in second and third gears with no issues, and it's not like there are many roads where you can do that anyway.

My poor long suffering Suzuki GS1000S with the leaky pingel loves high RPM and regardless of whether it's making more power over 10K RPM's, it's obviously still going faster as the revs rise, and I often see 90 Mph in second gear at 11000 RPM, but of course, I don't hold it there all day. Cheers, Terry.