Broke n Bummin made a good point regarding the propeller shattering because of pressure against the cone. A couple of weeks ago at our field, the propeller on a 1.50 4 stroke shattered and was propelled through the air (pardon the pun) like a knife blade. It was so fast, I only heard it go past, couldn't see it. If it had hit someone, there could have been a very serious injury.

My point, minimize your presence in front of the prop, that is after starting, get behind the plane and avoid standing along side a spinning propeller.

DaveB