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100 psi, a 2-1/2' nail, and and 1/2 index card
Posted: Sun Nov 08, 2009 12:52 pm
by boyntonstu
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
Posted: Sun Nov 08, 2009 12:58 pm
by jackssmirkingrevenge
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.
Posted: Sun Nov 08, 2009 1:13 pm
by boyntonstu
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.