Triple Take - Homemade Pneumatic Dart Gun

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
Doctore
Specialist
Specialist
Posts: 134
Joined: Sat Mar 26, 2011 2:18 pm
Location: Danilovgrad

Fri May 17, 2019 5:25 pm

Hello everyone.

A few days ago I built a simple ball valve airgun to test some darts I made. The reservoir is 0,5l coke bottle and maximum operating pressure is about 6 bars, limited by the pump. A crude aiming system using bent nails is installed on the barrel, as you will see from the videos. No spring loaded mechanism, as I plan to build another full metal ball valve airgun (1l volume, 20+bar) so I am not going to spend time making trigger mechanism for this weaker airgun.

Projectiles are simple darts made out of nails/screws, hot glue and fabric. I also made some mini darts using tiny metal rods from an old umbrella. I tried shooting 6 of these at once like a pneumatic shotgun, but only with partial success as not all of them would embed in wooden targets. The most likely reason is lack of power. So I determined that the best way to shoot these mini darts is to combine 3 of them loosely with some electrical tape. I have prepared 4 damage videos which also showcase the gun itself.

1. In the first video projectile is composed of 3 mini darts combined loosely with electrical tape. I would love to see how these would behave against ballistic gel and at greater power, possibly 20+ bar. I believe their paths would deviate.

2.In the second video 6 mini darts were stacked in a barrel, it was a partial success. Likely reason why this did not work as I hoped is lack of power or something about the way how they are stacked prevents them from flying straight.

3. In the third video projectile is composed of 3 nails connected by electrical tape and some fabric for stabilization, blunt force is preferred here than penetration.

4. Fourth video is a penetration test of a regular Nail/Screw dart.

Any idea on how to improve these darts is welcome. I will continue to test various projectile designs and will post as much content here as possible. Enjoy the videos!

1.
[youtube][/youtube]

2.
[youtube][/youtube]

3.
[youtube][/youtube]

4.
[youtube][/youtube]