ORIGINAL: a65l
Gotta add my two cents worth. Most general aviation props are made of steel, not aluminum, as steel is more flexible than aluminum.
Andy
Most GA props are made of Al. NOT STEEL. I just finished school at east coast aerotech and my fingers are still sore from blending out nicks and scratches with a riffle file on Al props. Steel would be too heavy.
Also, a metal prop for our RC engines would be too much rotating mass and would degrade performance greatly, IMHO
sean