[redmodelt]

Personally I want my engines to hum, purr not lope! I think it is hard on the power train, each time the pistons come up, running too slow they stop before the flywheel carries them over and spark comes after TDC, I want that to be as smooth as I can make it. I think it is a dumb carry over from people that want to show just how slow the motor will run and in my OP has no place in the real world.