I dug out the old, original hs35 that I pulled off my first bike to replace with a similar unit. My plan is to fix all the messed up stuff, stripped bolt holes and whatnot, fix the ignition, carb and give it a nice coat of paint and new decals. The bore is nice enough and the piston is mostly guff-free.
But the crank has messed up threads. Many abusive attempts to beat the flywheel off have resulted in less-than-nice threads on the flywheels side. I've done an ok job cleaning them up but i'd feel better with better threads. I assume the crank is cast iron. Has anyone had any luck welding, turning, and recutting the threads on a crank?
I've got a few cranks from late model rotary mower engines, and could turn the main journals to fit the horizontal block, but they are longer on the flywheel side and have a different taper. Is there a points type flywheel that would work with this crank? Preferably a die cast zinc flywheel and not a heavy as hell cast iron one.
And when did they switch to the iron flywheel?
But the crank has messed up threads. Many abusive attempts to beat the flywheel off have resulted in less-than-nice threads on the flywheels side. I've done an ok job cleaning them up but i'd feel better with better threads. I assume the crank is cast iron. Has anyone had any luck welding, turning, and recutting the threads on a crank?
I've got a few cranks from late model rotary mower engines, and could turn the main journals to fit the horizontal block, but they are longer on the flywheel side and have a different taper. Is there a points type flywheel that would work with this crank? Preferably a die cast zinc flywheel and not a heavy as hell cast iron one.
And when did they switch to the iron flywheel?