A LATHE IS THE BEST AY TO GET IT PERFECT. 1ST AND BEST WAY TO GET THE CORRRECT TAPER ANGLE IS TO REMOVER THE CRANK AND CHUCK IT UP SO U CAN FOLLOW THE ANGLE WITH UR COMPOUND USING AN INDICATOR. MAYBE SOMEONE HERE KNOWS WHAT THE ANGLE IS WHICH WOULD SAVE A LOT OF TIME. I MADE A PROP HUB FOR MY SHINDAWA THIS WAY AND ITS PERFECTLY TRUE. THEN CHUCK UP THE FLYWHEEL AND MACHINE THE TAPER AND THE FACE THAT THE PROP HUB SET AGAINST. IF THE KEY IS CAST INTO THE FLYWHEEL YOU MIGHT NEED TO MARK ITS POSITION AND BROACH IN A KEYWAY BEFORE YOU TAKE IT OUT OF THE CHUCK. LOTS OT WORK FOR A LITTLE WOBBLE BUT 8000RPM CAN REALLY VIBRATE.
FARMER TED