Hi everyone, I have just got some futura se mechanics and was working out my gear ratios. I am going to put an O.S. 91 C Spec in it which has a rpm range from 2000 to 16000, its peak is 3bhp @ 15000 rpm.
As it is now the gearing ratio is 1 to 11.1238 which means at 1800 rotor rpm the engine is doing 20000 rpm not good.
So before I go and buy new gears I was after some info on engine rpm.
Should I try to make the engine do its peak at 1800 rotor speed or do I run the engine at a lower rpm?
Any help would be appreciated.

Sparkhead :stupid: