Hi,
I've been working on an electrically powered slug thrower that makes the best use of available battery power. It is finally done. It operates like a "centrifuge" gun and can launch 5/16" (7.9mm) diameter delrin spheres at 460 ft/sec (140 m/s). The launcher can fire single shots, 3 shot bursts or full auto (5 shots per second). The magazine capacity is 50 shots.
It is powered with a 7 cell NiCd pack.

I call it a "PEST" or Portable Electromechanical Slug Thrower

Please see the webpage:
http://www.geocities.com/pest3125 - Please try later if the site goes down due to bandwidth limits

The photo album is at:
http://photos.yahoo.com/pest3125

That looks pretty incredible.

How long did it take to make? Did you do all the machining yourself?
Are you a mechanical engineer?

That looks pretty incredible.

How long did it take to make? Did you do all the machining yourself?
Are you a mechanical engineer?

I've been working on this off/on for about 1 year. A lot
of time was just spent doing paper designs. Yes, I did all the machining myself on a Sherline 5400 tabletop milling machine.

Hey, just so you know it, your very nice project was posted on hackaday.com...

Check it.. http://www.hackaday.com/entry/1234000863063414/

Pop. Mechanics, back in the 50's, had a similar one, but no where near as nice or powerful as yours. Good work!