I tweaked my spring engine with a circle rotating at 1200rpm's and the main crank unit is hinged to that with a slight brake to keep the motor spinning counter-clockwise. It still has the tendency to run clockwise, but let it be for a few minutes, the circle will do it's job and correct it's rotation. I am working on making the engine stronger and fast but stable.
Controls:
All keys except motor controls are on numpad.
1: 1st clutch, weakest but the least straining on the motor.
2: 2nd clutch, mid way high strain on motor from slow speed.
3: 3rd clutch, highest, will stall engine if not moving or moving too slow.
Motor:
1 to start rotation
2 to stop and unlock motor rotation.
Comment tips to make it stronger