Originally Posted by Ski in NC
It creates a stress riser in the region of the shaft with the highest stress. Same thing as why it is so important to fair the keyway properly to avoid shaft fracture. Not a big deal if shaft is lightly loaded.
I have 330 horsepower turning 24" props hung on 2" shafts.
I think I'll stick with the clamp on units.
I don't like even the concept of causing a "stress riser"; my butt is puckered even thinking anout it