Sum of torque

[EOW]

Maybe I don't need the arms, just the sphere and its mass in the center. With the container + balls + springs. The main axis of rotation is the blue axis.

[EOW]

Like that with a gyroscope. Or without a gyrsocope it must work.

[EOW]

At start the disks don't turn around themselves. I launch the arms at w. I can put inside the orange disk a gyroscope because in the laboratory reference the orange disk don't turn.

2 springs: one attracts the other repuls.

There is one gyroscope inside the orange disk. The blue disk don't have a gyroscope. The blue arm receives a positive torque. The orange arm don't receive any torque because the gyroscope take the torque.

For 180° Spring1 repuls, the Spring2 attracks. For the next 180° Spring1 attracks, the spring2 repuls.
.

[EOW]

Details of the disks

[EOW]

The orange disk is not necessary. Onle the blue disk and the gyrsocope. The blue arm receives a torque. And the gyroscope receive the negative torque but it does a precession. I drawn several position of the gyroscope and the blue disk to show the electrostatic charge (or it can magnetism or springs or hydraulic device). The arms turn clockwise but the blue disk turn counterclockwise in the arm reference (the disk like the gyroscope don't turn in the laboratory reference).