> I just read a great review on the OS Max .91FX engine in RCM. They report OS
> crammed .91 c.i. in a .60 sized engine. It's reported to make 2.7 hp, a big
> increase over most .60's. Has anyone tried to put this in their heli? Think
> it would work in my 60 X-Cell?
> I have one and tried it. The remote needle valve leaked air, and generally
> ran pretty poor. Another person told me he tried it with a different carb
> and it also was not up to the job in a heli. Don't waste your money.
> >the 91 FX is an airplane motor and i dont think the carbarator on it will
> >very well on the heli, with a different carb it might work if the fan will
> >the 91 crankshaft.