Arms are available in two lengths – 145mm and 175mm.
The 145 mm arm can be safely used with up to 9.6 inch propellers.
The 175 mm arm can be safely used with up to 11 inch propellers.
The Motor Mount Plate is used on either length. It supports motors with the 16mm and/or 19mm mount hole spacing.
- Download STL of Arm – Length: 145 mm – Version 9
- Download STL of Arm – Length: 175 mm – Version 9
- Download STL of Revised Arm – Length 175 mm – Version 10 (strengthened for larger motors)
- Download STL of Motor Mount Plate – Version 9
Suggested Print Orientation
The motor mount plates may need to be printed separately due to their higher infill rate.
Suggested Infill Settings
Arms – 25% to 50%. For larger motors and bigger props, higher infill may be preferable. The Motor Mount Plate should be printed with 100% infill to support tightening of the 3mm flange screws securing the motor.
Suggested Supports
It’s recommended that supports be only from the build plate to avoid supports in the interior of the arm tube. It may be impossible to remove supports from inside the arm tube. I’ve had good luck with supports like this:
