Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks Gil.

I have seen these heavier flywheels on several SIPP's.  What I find odd about this one is that the flywheel is bored 1/2" and there is a bushing in the bore to bring it down to the 3/8" diameter of the crank shaft.  So I think it came from a different engine and was adapted to fit. 

Can you e-mail me the PDF SIPP catalog that you have in case it is different from the one I have.

Thanks

Jim in Minnesota