Just put on a 10x7 wood prop on my Hanger 9 Alpha 40...WOW!!!! It gives it alot more zip. I bet the speed picked up at least 10mph, I can't get over how changing to a 2 bladed prop made that much more of a difference. The only thing is it lands a little quicker as well, so you have to give yourself a little more time to bleed off speed before setting it down.

Anyone else have experience with 2 bladed props on the Alpha 40 and noticed the difference???