Defective motor - POWERUP 4.0

The POWERUP 4.0 dual motor propulsion system requires fully functional motors to achieve aerial maneuverability.

NOTE: You must test the motors functionality ONLY in a real test flight. Testing the motors  while the POWERUP 4.0 module is in your hand will not give you correct results. The motors are controlled by the autopilot flight controller which is influenced by the gyro and accelerometer. If you see only one motor rotating when you throttle up this does not necessarily mean there is a problem.

Test fly your POWERUP 4.0 on a calm non windy day. Verify that your plane is trimmed symmetrically and glides straight when no throttle is applied. Throttle up to 40% and hold you phone straight and parallel to the ground. The plane should keep direction/ heading.

If your plane turns sharply or spirals into the ground check the following:

1.  Verify that you have the correct propellers assembled on your left and right motors. Note that the left and right propellers are NOT identical, they are a mirror image of each other. the right propeller should turn clockwise and the left propeller should turn counter clockwise when you look at the plane from the rear. See correct propeller assembly here
2. Verify that the propellers are not damaged bent or broken.
3. Verify that you do not have any debris like lint,hair or grass wrapped around one of the motor axle.
4. Verify that both propellers spin freely without any friction. You can test this by flicking the propeller with your finger, you will notice the prop will spin and slow down. Slow down should be the same for the left and right motors.
5. Turn on the module - both props should spin momentarily and a chime will sound. This should indicate that both motors are working properly. Note that in the event that motors are not spinning evenly this does not necessarily indicate there is a problem. the internal brushes of the motors apply some friction and may cause uneven rotating during startup.
6. If you sense a grinding feeling or grinding sound inside the motor, this could indicate that there is an internal damage inside the motor
7. Look at the  motor axle, if bent, this may cause an uneven and inefficient  thrust on one side.

*The motors on the POWERUP 4.0 are not designed to be replaced by the customer.