N20 Twin Motor Carrier
The rear drive block of the 'SG90 Ackermann Steering Rover Chassis' kit. It is 34 x 70 x 17.1 mm and holds two N20 (GA12-N20, 12 x 10 mm) gearmotors back to back in a 12.4 x 9.6 mm channel, with the output shafts pointing outward. It bolts under the deck on the shared 24 x 44 mm M3 (3.4 mm) pattern using M3x30 screws that pass through the clamp cap. The gearboxes sit 0.4 mm proud, so the cap squeezes them firmly in place, and a notch in the cap-side face lets the motor wires out.
robotics kit n20 gearmotor