hi,
i just bought a weed eater from h.f. on saturday. it`s a twin ring. i think the twin rings have been out long enough that they`re probably all twin rings now. although they`re remanufactured they still need to be broken in. while i was there i noticed they had leaf blowers for $59.99 also. i don`t think theres a clutch on a leaf blower but best i could tell it looked like a long shaft engine.i needed a short shaft engine for my prop adapter but i thought about getting one for another plane. i heard the long shafted engines are better for bolting props on? hope this helps.
conk