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100 psi, a 2-1/2' nail, and and 1/2 index card

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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100 psi, a 2-1/2' nail, and and 1/2 index card

Unread postAuthor: boyntonstu » Sun Nov 08, 2009 12:52 pm

Image

Truly amazing what 100 psi nail dart can do in a 3/4" barrel.

BTW I developed a method to make a nail dart in under 1 minute.

This result can lend itself to the self powered 12 V compressor gun concept or to a small chamber/valve refill system.

Here is the inspiration:

http://www.airgununiverse.net/community ... 135.0.html

BoyntonStu
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Unread postAuthor: jackssmirkingrevenge » Sun Nov 08, 2009 12:58 pm

It's all about cross sectional area and density.

Simply reducing the diameter of your projectile from 0.75" to 0.5" means that it only needs less than 50% of the of the energy the full bore projectile needs to penetrate the same distance in a given medium.
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Unread postAuthor: boyntonstu » Sun Nov 08, 2009 1:13 pm

jackssmirkingrevenge wrote:It's all about cross sectional area and density.

Simply reducing the diameter of your projectile from 0.75" to 0.5" means that it only needs less than 50% of the of the energy the full bore projectile needs to penetrate the same distance in a given medium.


Agree.

The nail is 0.135' in diameter.

When I tried to pull the nail out with a pair of pliers, it was impossible.

At 100 psi, a 70 grain nail dart is very dangerous.
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