Dart Cannon
Very powerfll and mobile cannon. uses a blowgun for a barrel. this thing can shoot a 1g dart at velocitys that I'm still trying calculating. With out the cannon a blowgun has velocits from 150 to 300 fps. Impressive consitering the human lungs can put out around .5 psi. This cannon gets up to 100+ psi. You can imagin the velocity has got to be pretty fast consitering I have shot a dart threw a quarter with this one.
Parts List
2 1" 90s
1 1" T peice
1 1" to 3/4 threaded for 3/4
1' 2" pvc
1' 1" pvc
1 2" couple
1 2" to 1" converter
1 3/4 " threaded couple
1 3/4 " threaded to non threaded
2' 3/4" pvc
1 .40 dartgun barrel
1 tube of pvc joint compount
1 can of pvc glue
1 roll of gorrila tape or duck tape gorillas thicker ( no not the entire roll.) (used to fit the blow gun barrel in the 3/4 inch barrel)
1 fitting to convert from 1 inch T to bike pump nozzle (a tap will work from what I hear, still not tryed yet)
1 100 psi rated valve, I used a garden hose nozzle 3/4 inch threaded
DARTGUN.EXE
This file will calculate velocitys.
Dart cannon dimensions are
Barrel length: 72 inch
Barrel width: 10 mm
Pressure in system: 0-100 psi
Weight of dart: .7 grams
Design

physics of velocity soon
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