Thanks, Yeah from my recent research I seem to get the same answer, (get a meter) so I think thats what ill do. I was told by a guy at my local hobby shop to get a 450 870kv for the cub and he said that thinking I had a bigger cub than I do The Exceed j3 cub is a 1/5 smaller than the one he thought i had. When I told him how big mine was compared to that he said the 450 might be too much for it. So on nitroplanes i looked at motors and the 400 920kv was the next closest one, the others were sold out. I figured that it was worth a try being so cheap with great reviews. I also went with the 30amp esc. If this wont work on this plane I might just try and build a plane with all my spare parts laying around.