Basic Minigun Barrel Drive
 

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:

http://www.air-sharp.com/m3minigun0064.JPG
The Horror, the horror. At least the bits I'm not using are recyclable.

http://www.air-sharp.com/m3minigun0065.JPG
The clutch housings are removed, but the springs and pressure plates are retained.

http://www.air-sharp.com/m3minigun0066.JPG
A completed drive, one of two for this project.

http://www.air-sharp.com/m3minigun0067.JPG
Drives installed.

YouTube - Super-Small Airsoft Minigun!
A 2" O-Ring serves as a drive belt.