O/T Electric BB Shooter

[evilvet]

This is cool

http://cache.gizmodo.com/assets/resourc ... nonme4.jpg

[velocity3x]

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!

[Technician1002]

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

The article claims a muzzle velocity of only 25 feet per sec.

[Ragnarok]

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

And thus a muzzle velocity of a still respectable ~1,050 fps.

[Zeus]

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.

[HunterT]

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

[jackssmirkingrevenge]

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

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