ORIGINAL: speedracerntrixie

Joe, take a look at the prop that he mentions and then realize that it comes with a 10mm center hole.

http://www.xoarintl.com/props/model-airplane/PJA.html

The reason that it comes with a 10mm center hole is that is the standard dia. on all gasoline engines, not glow. The prop he is looking at is intended for gasoline/ignition engine with a 4 or 6 bolt hub. As a result the hub and blades are thicker to take the stress of this type of engine. I'm not 100% sure but it sounds like we are talking 22" to 24". Now take a look at what Xoar makes speciffically for electric in those sizes.

http://www.xoarintl.com/props/model-airplane/PJH-E.html

there is a big difference, I still would not run a gasser prop on an electric setup, it is going to draw more current. Yes the APCprops do flex however if you look at whats on the nose of 75% of 2M pattern airplanes you will see APC E props. The others will be mostly Falcon CF E props.