04-05-2020, 09:28 AM
Dave, are you quite sure that's a crack? Not saying it isn't but it can be hard to read these things on a part never mind from a photo. Also not sure what kit you're using.
Fatigue is cumulative, doesn't necessarily have to be thrashed, just run for a long time. Many originals have a fillet radius no more than 1/16" (and that's the good 'uns) - it's a big stress raiser on an already smallish crank.
Fatigue is cumulative, doesn't necessarily have to be thrashed, just run for a long time. Many originals have a fillet radius no more than 1/16" (and that's the good 'uns) - it's a big stress raiser on an already smallish crank.