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Airsoft Damage Challenge

A place to ask general spud cannon related questions.
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Unread postAuthor: Gun Freak » Thu Jul 15, 2010 12:19 pm

It looked more like the actual gas made the hole... not the bb, but I'm stupid...
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Unread postAuthor: DYI » Sat Jul 17, 2010 10:44 pm

I'll make an airsoft barrel for the ETC when machining is finished. If around 5km/s and twice the energy of a .44 magnum doesn't do it, nothing will.


If you can coax the BB into surviving its short and violent trip out the barrel, it'll probably go through 1/4" steel plate without much trouble :roll:


In free flight, the round would have traveled roughly six feet per frame of video (at 1000 frames/s). Even with excellent lighting and a perfect camera angle, I doubt it would show up as even a faint green line on a single frame. Considering this, I'm not sure how one could surmise that it "looked like" one thing or another penetrated the coin. However, consider the facts: the total body of propellant gas weighs less than the projectile, and only a small fraction of it would be moving out the barrel at the same speed the projectile is. Also, the projectile is solid, and still a good deal denser than the gas.

The main body of the propellant gas, the incandescent jet which extends through the (empty) holder arrives, relative to the timescales considered here, long after the projectile has come and gone, punching through the target and ripping it out of its holder in the process. The damage to the table behind it suggested that the dime impacted it at between 50 and 100 m/s, consistent with the momentum it would have gained from the impact and fast moving front of the propellant gas. That incandescent jet is shooting through an empty hole in the holder, where the dime used to be.
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Unread postAuthor: ramses » Sun Jul 18, 2010 9:05 pm

DYI: What are the specs on that 2KJ cap bank? Were they 'lytics?
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Unread postAuthor: Mr.Sandman » Mon Jul 19, 2010 1:48 am

If you want, I can mail you some .2 gram bbs. I think the reason you aren't getting through is because .12 gram bbs are usually shoddily made and have a large air bubble in the center causing them to crack easily.
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Unread postAuthor: DYI » Mon Jul 19, 2010 8:53 am

If you want, I can mail you some .2 gram bbs. I think the reason you aren't getting through is because .12 gram bbs are usually shoddily made and have a large air bubble in the center causing them to crack easily.


Not getting through what, precisely? The 0.12g BB went through just fine on the last shot, as the pictures on the video indicate.
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Unread postAuthor: ramses » Mon Jul 19, 2010 3:25 pm

I guess you missed it, so I'll ask again :D :

What were the specs of the cap bank, and were they 'lytics?
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