maximum rpms

[bajadave]

I was wondering what the maximum rpms should be on my 26 cc fuelie motor in which I added a 2mm stuffer crank and a 35mm big bore kit to. I ran it with a yacht and the highest rpm I get with 30/30 gears is 14280 rpm.

 

[DemonRC1]

That might be right with a stock exhaust. What exhaust/pipe are you running?

 

[bajadave]

I have a cpi tuned pipe rear exit