It is actually on a twin 63 powered 3d plane that weighs about 11lbs. I need to get the max thrust to get a better pullout from the hover. My speeds were estimates. The bottom line was that with the 14x4's the engines were screaming and the plane looked as if it were on the verge of stall.

BTW, we took a radar gun out to the field and I was surprised to find that my 63 powered (40 size) Balsanova was hitting 103 in a dive and 90 straight and level. It didn't look THAT fast and it wasn't gonna fly apart or anything. Now my buddy's quarter midget that looked like it was screamin was only going 160 out of a very slight dive.