Originally Posted by simsy
Do they normally slip a little bit anyway, I guess not ?
Will my 20hp 2 smoke yam have the power needed to get this phenomanon, lol...?
No, they don't normally slip!
The 'bushing' is there to save the drive train
IE , if the prop gets terwatted the bush fails and that saves the rest of the gearbox etc.
Same thing with a shear pin on smaller engines/props.
I would imagine your 20hp will be' bushed' if so, it too will behave just like a bigger un.
Theory is-- it's cheaper , easier an quicker to fettle a prop and its innards than a gearbox etc!