new gun

[DAltar]

i am building this gun and the spud gun calculator will not work so any ideas on how powerful it may be?

[DAltar]

the air chamber is 3 inch, the barrel is one inch, the street elbows are 3 inch the valve is a 1 inch modified sprinkler valve from spudtech

[boilingleadbath]

How long are these chambers? It's quit obviously not drawn to scale.

[DAltar]

sorry the scanner must have not copied the lengths and diameter of the pipes and fittings when i changed it to jpeg form.

26"x3" air chamber

36"x1" for barrel

pressure being used on average- 40-60 psi

[boilingleadbath]

The GGDT results:
The energies with a 25g projectile:
40 PSI: 61 foot/lbs
60 PSI: 87 foot/lbs
.22 lr: ~100-110 foot/lbs (for reference)

Make a barrel extention, buddy... and you'd probably be better off with a 1.25" barrel. (but not by much)

[DAltar]

ok thank you