There are plenty of motors in the .40 sized range that will give unlimited vertical performance. Matter of fact, most motors on the market will when you figure that the Top Cap is only supposed to weight 4 lbs or a little more.

These planes are designed for Hoverbatics or 3D.
Key with 3D is to keep the wing loading and the total weight of the plane down.
If you have to add a tuned pipe or a tuned muffler to get the desired performance you are adding weight.

3D requires lots of air over the tail while the plane is flown in a stalled condition. 4 cycles have the advantage over two cycles because #1 they swing larger props and #2 they develop more power throughout their entire throttle range.
A 2 stroke has to be turning higher RPM's to develop the power needed for 3D.

This is not to say you cant 3D with a 2 cycle on a profile. You most certainly can but its much easier with a 4 cycle.


These planes are not supposed to be flown fast!