I have designed four 3D STL models of motor retainers that were designed by Cox Model Rockets.

1) 18mm single motor
2) 18mm dual motor
3) 24mm single motor
4) 24mm dual motor

Dimensions were taken directly from these parts.

You can download these files for free from Thingiverse to print on your own 3D printer.

https://www.thingiverse.com/thing:5964739

Very nice of you to do this!

I have no need for any, but I wanted to give a shout-out to your paying forward, with free files.

.

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Contest flying, Sport flying, it's all good.....
NAR# 18723 NAR.org
GeorgesRockets.com
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https://www.gofundme.com/f/help-geo...ay-fight-cancer

Thanks, George!