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O/T Electric BB Shooter

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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O/T Electric BB Shooter

Unread postAuthor: evilvet » Wed Dec 29, 2010 5:01 am

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Unread postAuthor: velocity3x » Wed Dec 29, 2010 7:18 am

IMO, not a practical design to achieve performance.
The article states that a swing radius of 6in spinning at 20krpm will deliver a velocity of over 5,000fps. It won't!
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Unread postAuthor: Technician1002 » Wed Dec 29, 2010 11:23 am

Dividing 20,000 by 60 only gives 333 revs per sec.

The article claims a muzzle velocity of only 25 feet per sec.
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Last edited by Technician1002 on Wed Dec 29, 2010 12:00 pm, edited 1 time in total.
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Unread postAuthor: Ragnarok » Wed Dec 29, 2010 11:45 am

Technician1002 wrote:Dividing 20,000 by 60 only gives 333 revs per sec.

And thus a muzzle velocity of a still respectable ~1,050 fps.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: Zeus » Wed Dec 29, 2010 5:52 pm

I saw that in the PMJB volume something, if it was a viable option it would already be in use.

Anyway accuracy would be woeful.
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/sarcasm, /hyperbole
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Unread postAuthor: HunterT » Thu Dec 30, 2010 1:01 am

The Mythbusters did something similar to this. They built a steam machine gun. It used an air impeller to spin a piece of pipe and they fed ball bearings into it through a hollow axle. They spun it up to about 3000 rpm I believe.

It wasn't very effective. It couldn't "injure" their ballistics gel dummy at long ranges. They never figured out it's velocity, but I'm guessing it was about 320 fps(3000rpm & ~1ft radius).

See here
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Unread postAuthor: jackssmirkingrevenge » Mon Jan 03, 2011 6:01 pm

Zeus wrote:if it was a viable option it would already be in use.


indeed, the DREAD would be more than just an awkward promo presentation.
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