The third channel on the receiver IS for the throttle (up and down on your left hand stick on the transmitter) - to reverse this (the rotation direction of the propellor), however, you do NOT reverse the servo switch for that channel (there isn't any servo for throttle on an electric model) what you do is to switch two (2) of the three leads coming from the motor into the speed contro- that WILL reverse the direction of the motor and then the speed control has a connection into Channel 3 on the receiver - therefore this will REVERSE the direction of the propellor!

Let me know by PM, Post, or Email if that works - it should!

Happy New Year,

Dave/sushi2me