-Mount the motor, propellers
1. Drill at least more than 2 holes on the bracket to mount the motor.
2. Attach the motor to the bracket. Please make sure the screws are tight.
3. Ready to attach propeller to the motor, first attach the propeller adapter to the propeller, then connect them to the motor. Make sure place the direction of the blade to the correct to make wind forward. The picture on the right is to help you understand what I mean. Remember the direction of the propeller for the connection with ESC later. (Ref.-http://copter.ardupilot.com/wiki/connect-escs-and-motors/)
4. Attach them on center of upper side of propeller hole, use Zip ties to make it secure. Be sure the propeller has enough space to spin