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

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: HACKERZLORD007 » 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
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Unread postAuthor: Tobin » 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?
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Last edited by Tobin on Sat Jun 11, 2011 6:54 pm, edited 1 time in total.

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Unread postAuthor: Gun Freak » Sat Jun 11, 2011 6:54 pm

Yeah we need more specfications like barrel length, chamber length/diameter, valve...
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Unread postAuthor: saefroch » 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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Unread postAuthor: jackssmirkingrevenge » 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.

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Unread postAuthor: HACKERZLORD007 » 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
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Unread postAuthor: Tobin » 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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Unread postAuthor: Crna Legija » 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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Unread postAuthor: Labtecpower » Tue Jun 14, 2011 12:49 pm

better valve.

CHEERS!!!!1!
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