I've been around these spinning props for 15 years but have been away few a couple years. 1st time starting an engine again. While idling I was telling my son something about the steering or nose wheel and proceeded to point and stick my finger right at the wheel from the front into the prop. I got lucky and only got buzzed with no damage. "Wow, how could I do that. That was stupid." I would never had done that in my RC prime.