Hey y'all.
I just wanted to drop a line or two.
As a part time job (work-on-side) I have a small engine repair shop and I never really thought about flying models with chain saw or wacker's engines untill I found an amature web page of one guys who fly big stick airplane with ryobi engine.Anyways,I decided to try and convert engine off one of my many 'eaters.
Will strip everything off but the only problem I think I will run in to is balance flywheel after I cut the fins.The filns will HAVE to be cut to avoid un-wanted airmass flows ,generated by fins.And I don't want to put no electronic ignitions of any kinds.

If anyone of you knows how to avoid disbalance of the flywheel ,please let me know.
Thanks.