BTW, I forgot to mention, that to mount the Ryobi flywheel on the balancer shaft, I used one of the tapered slides backwards on the back side of the flywheel and just used the cone side of one on the front of the flywheel. I have a couple of High Point balancers as well as a Top Flight. The Dubro balancer should work as well as the Robart High Points?

One of my short shaft Homelite 30's has a chain saw flywheel on it which seems to work just fine.

After reading the conversion article from the link above, it brought to mind about using long shaft flywheels on short shaft engines. They will fit and run true but the position is off front to rear. To put a short shaft flywheel (5/16") on a long shaft engine (3/8"), well, as you can see, it's not going on there. I've been there and found out the hard way.

Enjoy,

Jim