Thank you all for your previous responses to my fractional hp motor question. It seems the residential motor market may not deliver as advertized.

My new question: Is it inadvisable to run a 3/4 hp motor at 70% of it's deliverable torque in order to achieve 1/2 hp of power? Although a more costly motor, the 3/4 hp motor should last far longer than an under-rated 1/2 hp motor trying to deliver a true 1/2 hp of work.