Brushless Outrunner Motor Mount 9mm Shaft

Motor Mount in Plane

Motor Mount PHA/PLA

Motor Mount PETG

Motor Mount 9mm STL file


This is a stick mount for any brushless outrunner motor that has a 9mm shaft. The mount is made to zip tie to a 9.5mm (3/8”) square wood stick glued onto the aircraft frame.

The stick mount allows for medium crash impacts to be absorbed into the zip ties rather than the airframe. The mount also allows for compliance during soft impacts, the mount simply slides or rotates within the zip ties. Simply straighten out the mount or replace the zip ties to make repairs in the field.

Motor Mount 9mm STL file

Title Value
3D Printer Prusa i3 Mk3S
Rafts: No
Supports: No with auto level, Yes semi auto or manual level
Resolution: 0.3mm
Infill: 100%
Filament: ColorFabb PLA/PHA
Filament_color: Your Choice


Print the mount on end with the flanged end facing down as show in the photo. PETG or ABS can also be used to print theses mounts, although I find PHA/PLA works very well.

Motor Mount PETG


Add one M3 screw 10mm long and one M3 Nut. I prefer a nylon inserted nut. Insert the 9mm motor shaft into the flanged end of the mount. Fasten with M3 screw and nut

How I Designed This

Designed using Onshape. Please see this link to access the native Onshape files

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