Abstract: A gyro motor drive speed control system using reference coils in place of turable reactors for motor start up and spin direction. An oscillator provides a 1 H.sub.z squarewave signal to rotate the motor magnet in some direction, and movement of the magnet causes a magnetic field disturbance which induces a current into the reference coils. The signals from the reference coils are fed back into the oscillator and through a phase shifting and squaring network, with one reference signal shifted 90.degree. out of phase. The multiplied output signals are fed into a circuit for motor drive and speed control. If the magnet begins to spin in the wrong direction, the quadratured lead-lag signals will be reversed, acting against the magnet, causing it to stop and reverse direction.