Prop Adapter T-Mount to 5mm

A prop adapter for T-mount motors to accept 5mm center hole propellers
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updated June 2, 2025

Description

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This is a propeller adapter for small brushless multi-rotor motors. I designed this for a 1804 - 3400KV motor I am using on a sub-250 gram fixed wing RC plane. I had 3" propellers with a 5mm mounting hole. It's a two piece design that uses a servo mounting screw to hold everything in place. Depending on your printer there may need to be some finishing work that may need to be done to get everything to fit properly. The tolerances are pretty close. To install it, first mount the body on the motor, then the prop, then slide in the cap and screw it together.

Print Settings:

Filament: PETG
Nozzle: .4mm
Layer Height: .2mm
Walls: 10
Support: not needed

So far this has held up well and experiences no vibrations at max throttle.

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