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ke5etc

RC Airplane Motor Mount and Landing Gear System

by ke5etc Mar 22, 2019
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I like the concept of this, and you have put in a lot of effort.

Problem is that from many posts in model flying forums, there is a history of 3D print motor mounts and indeed complete planes not standing up to temperatures that a car/van interior can reach in summer and what a motor temp (and therefore its metal mount) can get to in normal use. The consensus seemed to be that PLA had a too minimal temp softening point, and even PETG and ABS needed care.

Having said that, as a test I put two vases, one with thin flutes all over, high in a conservatory that is often closed up facing sun all day, so reaches very high temp. They have not moved shape at all nor the PLA one faded in UV.

It is however a factor to consider and test before a motor disconnects in flight!

Take a closer look I put in quite a few holes for air Cooling especially in the motor mount itself. Also I'd be very concerned if your motor gets above 150 degrees Celsius in normal use.