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Need piston valved gun experts

I just built a big piston valved spud gun. I can't get it to fire. When I release the pilot valve no air even comes out. The piston is sealing though. I think it might be theres not enough air in it. I charge it using a 1.5 gallon compressor at 100 psi. The chamber is 5 foot of 3 inch tubing. I don't know why no air even comes out of the pilot valve. I know their isn't leaks or none big enough to hear.

blugyblug8 years ago
I think your piston is WAAY to tight in the barrel so the air cant get past. You dont need a piston valve expert for this you know, probably 3/4 of the people of SpudFiles.com know how to fix this.