First airgun, 40bar/580psi (damage vids) (Updated)

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.
HACKERZLORD007
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Sat Jun 11, 2011 1:19 pm

just wanted to confirm how i could increase the muzzle velocity of my pneumatic rifle ????

Should i try increasing the chamber volume or should i try increasing the chamber pressure???
(Currently running 30 cubic inches at 150 psi)

Help Needed......thnx!!!!
CHEERS
Tobin
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Sat Jun 11, 2011 6:50 pm

HACKERZLORD007 wrote:just wanted to confirm how i could increase the muzzle velocity of my pneumatic rifle ????

Should i try increasing the chamber volume or should i try increasing the chamber pressure???
(Currently running 30 cubic inches at 150 psi)

Help Needed......thnx!!!!
CHEERS
What is most efficient depends on the barrel. How long barrel u have and what is the diameter at the barrel?
Last edited by Tobin on Sat Jun 11, 2011 6:54 pm, edited 1 time in total.
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Gun Freak
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Sat Jun 11, 2011 6:54 pm

Yeah we need more specfications like barrel length, chamber length/diameter, valve...
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saefroch
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Sat Jun 11, 2011 9:37 pm

Both will do it, but I'd suggest increasing pressure since that's usually easier, but not if you'd be pushing the pressure rating on components.
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jackssmirkingrevenge
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Sat Jun 11, 2011 9:41 pm

Increasing chamber volume is effective up to a point, after that could can double the volume and only get a 1% increase in velocity. Increasing pressure on the other hand should give a roughly linear increase in power.

Download Gas Gun Design Tool and have a play before cutting.
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HACKERZLORD007
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Tue Jun 14, 2011 11:39 am

em my specs are:

Fill Valve: A Bike Schrader Valve
Trigger Valve: 1 Inch Brass Ball Valve
Barrel Diameter: 0.5 inches
Barrel Length: 22 Inches
Chamber Length: 35 Inches
Chamber Diameter: 1 Inch
Average Pressure: 120 psi
Maximum holding Pressure: 500 psi+
Chamber Volume: 30 cubic Inches
Building Material: Galvenized Metal
Tobin
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Tue Jun 14, 2011 11:57 am

HACKERZLORD007 wrote:em my specs are:

Fill Valve: A Bike Schrader Valve
Trigger Valve: 1 Inch Brass Ball Valve
Barrel Diameter: 0.5 inches
Barrel Length: 22 Inches
Chamber Length: 35 Inches
Chamber Diameter: 1 Inch
Average Pressure: 120 psi
Maximum holding Pressure: 500 psi+
Chamber Volume: 30 cubic Inches
Building Material: Galvenized Metal
Then increased chambervolume wont make any noticable difference :)
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Crna Legija
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Tue Jun 14, 2011 12:02 pm

HACKERZLORD007 wrote:just wanted to confirm how i could increase the muzzle velocity of my pneumatic rifle ????

Should i try increasing the chamber volume or should i try increasing the chamber pressure???
(Currently running 30 cubic inches at 150 psi)

Help Needed......thnx!!!!
CHEERS

wit hi preshaaaa :lol:
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Add me on ps3: wannafuk, 8/11/11 cant wait
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Labtecpower
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Tue Jun 14, 2011 12:49 pm

better valve.

CHEERS!!!!1!
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