Hey Paul,

The Contra works very well with an ESC Brake. I use about 30% with a soft start, and it's very effective. I turn it off with a high idle switch.

I like it for maneuvers that have downlines, and I like to use it for the square loop on a corner with half rolls. It lets me fly the last leg at the same speed as the other three legs. However, for maneuvers that have 45 degree downlines I use my high idle switch.

With a maneuver like the figure M you will find that you have to add throttle sooner as you start to push into the half loop or the brake will slow you down way too much.

The nice thing about using an ESC brake with a Contra Drive is that the reaction torque from each prop cancels the other, so the only negative torque that goes into the fuselage is the torque from the motor, which is reduced by the gear ratio of the gearbox, whereas with a single prop setup you get the full negative reaction torque from the prop going into the fuselage.

Negative torque is in the reverse direction from the reaction torque when the motor is under load.

Brenner ...