I've had this thing functioning for over a month now and only just got the capacitors I needed to finish it (Thank you, random woman at Giant Eagle). It's a single stage gun, but it seems to be in a butter zone of sorts, having (relatively) high output power for all the bigger it is.
So, instead of more rambling, specs:
Weight: 11 oz
-Muzzle velocity: 65 FPS (calculated using the stopwatch method, probably underestimated due to drag)
-Muzzle energy: 2.2 joules
-Capacitor bank: 10 low-ESR photoflash caps, MAX 60 joules capacity (normally runs about 50).
-Charger: Two lightly-modified camera flash chargers
-Charge time: 30 seconds with semi-decent batteries, but letting it run for a couple minutes seems to boost power 10-20%.
Other features:
-Adjustable magnetic breach loader, keeps the projectile from falling out when shooting downward.
-Charger light that stopped working for no reason.
This gun was designed to be as compact as possible, and can fit in most loose pockets. Looks a little too threatening for classroom use, unfortunately (would probably make someone dive under a desk if you pointed it at them:).
I don't think it could do much more than put an eye out, so it's relatively safe, but the capacitor bank still has enough juice to kill you multiple times when it's fully charged.
But anyway, I can make holes in pop cans, so I'm happy for now.
Youtube video:
[youtube][/youtube]
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