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Motor Assembly

You will need:

1 Assemble bottom motor

Align two holes in the bottom of the motor with two holes in the motor plate. Apply threadlocker to two 5 mm bolts, and secure the motor to the plate from below. This motor will attach to the underside of the arm, so orient the motor so that the cables will protrude as close as possible to the hole in the side of the arm. When applying threadlocker, use less than one drop, and cover only four or five threads where the bolt connects with the motor. Make sure to insert the bolts into the holes in the bottom of the motor and not into the slots where they could interfere with the motor.

  

2 Attach top motor to arm

Place a motor plate on top of the arm with the short end of the plate facing towards the end of the arm. Place the motor on top of the plate, and align the two small holes in the motor, plate, and arm. Orient the motor with the cables as close as possible to the hole in the side of the arm. Apply threadlocker to two 5 mm bolts (less than one drop covering four or five threads at the end of the bolt), and secure the motor and plate to the arm from below by accessing through the two large holes in the bottom of the arm. Make sure to insert the bolts into the holes in the bottom of the motor and not into

the slots where they could interfere with the motor

.  

3 Thread motor cables through the arm

Now you’ll thread the cables from both motors through the arm. First, thread the cables from the top motor through the hole in the side of the arm, and use a piece of tape to label the cables so that you can distinguish between the top and bottom motor cables. Once you’ve labelled the top motor cables, thread the bottom motor cables through the hole in the arm.

4 Attach bottom motor to arm

Place the assembled bottom motor against the bottom of the arm with the short end of the plate facing towards the end of the arm. Apply threadlocker to the ends of the two 25 mm bolts (less than one drop covering four or five threads at the end of the bolt). Place a 19 mm hollow spacer between each of the pairs of holes in the two motor plates. Place the 25 mm bolts through the motor plates and spacers, and secure from below with a metal nut.

Repeat these instructions for all motors.

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