The problem with a prop that has clipped the ground is that there may be a difficult to see crack running toward the hub center. Obviously, this could cause a catastrophic fault when the prop comes apart, sheds from the crankshaft and then shaft runs the engine. New props can have such problems too. It is best to go over ALL wooden props with a magnifying glass while applying torsional force to the prop blade (with the hub held solidly). Don't get too carried away with the torsional force being apply. We don't want to break a good prop!


Ed Cregger