02-22-2018, 12:03 PM
Bill, I doubt that filling the chip would increase strength. Give the lap, Loctite and torque method a try. It'll work on any tapered crank. The main diff between the keyed cranks and the non-keyed ones is the fact that non-keyed Mac cranks have left hand threads. This means that the nut is self tightening to a degree. On a right hand thread crank, a good lap job and the Loctite and torqueing are very important so that the nut does not tend to loosen. Ted