Most "western world" engines are designed with a considerable safety factor as far as redlines go. You could probably go 50% above the rev limit before running into serious trouble. I'm pretty sure that coil saturation problems are the real reason that the 270 degree engine can't run as fast as the 360 degree one.

I'm pretty sure that the 650 I once had was a good bit faster than my America. But, the bike weighed a lot less and so did I. If you could shave an America or S/M down to about 300 lb and put a skinny 16 year old on it, I'm sure it would be a whole different animal.


Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python