I have Udi U807 and Syma S107 coaxial helicopters. I am looking for a ready source for replacement main motors for each of them. The U807 uses 6mm motors. The Syma uses 7mm motors and both need 1 clockwise and one counterclockwise motor.
I used thes motors for my MCPx twin back rotor modification. Work perfect in combination with BL HP05S. Rock solid head when making 3D. Now allmost 50 flights and both motors working great. Just little tricky removing of pinions. Unbeliavable price in compartion with 2xoriginal eflite motor.