Why a separate thread for this?
Because these few informative shots would be otherwise buried in another topic.
At least ten mails a day, how DOES this work?
Here's how the barrels on the Killbucket Miniguns all get their motion:
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The Horror, the horror.
At least the bits I'm not using are recyclable.
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The clutch housings are removed, but the springs and pressure plates are retained.
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A completed drive, one of two for this project.
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Drives installed.
YouTube - Super-Small Airsoft Minigun!
A 2" O-Ring serves as a drive belt.