One of the things I figured with that head was that if the heli went through a blender, then it would come out as plastic dust and a Kasama head . That thing is built like a tank. I was surprised, though, because the main thing I like about it was increased range over the stock head- I wouldn't have thought to have whacked it that way. It must have been quite a sight. I am going to verify my settings again, just for peace of mind .

My opinion would echo redvtr, Dave- you can use CFs at any speed, and if you're beyond the crash-a-week stage, good ones fly better than any woodies I've tried. However, if you like the woodies, it's not a national emergency that you use something else as long as the heli's flying well and no temp or battery life problems.

I have different blades that I like for different head speeds, but at lower speeds, simple, thick airfoils are best. The blades I like for slower/cruising flight are kind-of expensive, but as long as the blades are well made and balanced they'll work fine; at higher head speeds, I'm a lot more particular.