Is the blade on RC plane dangerous?

Probably.

All props are dangerous, and most of us have scars to prove it, and some have less than the usual number of fingers. Its called 'giving the finger to the hobby'

Actually, the most dangerous time is just after the engine has been started. Studies have shown that a large number of injuries from props occur when people are doing something around the engine and hit the prop.

Sure, but so will learning, and using, proper safety practices when working with engines.

If you expect the prop arc to intersect the ground by design then you need to stop the motor before landing. Trivial on an electric and not difficult with a gas motor.

Duct fan is safer all around, but it is heavier and costs more than a prop.

Only if you stick your hand in it.

...

Thanks for the warning. While in a store yesterday, I turned the blade of a cheap EPP model and was impressed by the electric motor's unusually powerful magnetic pressure.

I guess gas motors are still started by flipping the blade with your finger.

Evem the smallest electric is around teh 010/020 type finger gashing level.

I read yesterday of the new Acro brushless - about 2.4Kw - so what? about equivalent to a 35cc chainsaw engine?

Electric starter rammed up against the spinner mostly. It gets fairly heavy to flip even a .40 although I have assuredly done it.

He probably will. "Your Friend Bill Everhart" wrote in message news: snipped-for-privacy@4ax.com...

And who that flies prop drive aircraft hasn't done that? ;^) Granted some of us haven't the displeasure of doing that with anything larger than a 36. BTDT don't recommend it to anyone.

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Actually I was thinking of a belly lander/hand launcher, no landing gear and a prop selected for its flight poperties. I didn't know why the poster was overly concerned with the prop hitting the ground otherwise. I was going to make a lawnmower analogy and say that those blades don't come loose when they "hit the grass" 8)

Speed 480 electric snapped my antenna in half. That was about equivalent to an 074 powerwise, but spinning a large prop slower. (5kRPM, 10" prop)

No way! Use a chicken stick or electric starter.