Pump marble gun

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SpudFiles Forum Index » Theories/Accessories Database (NOT FOR HELP-ME POSTS!) » Pump marble gun

Pump marble gun

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Gunner

Posted: 01/10/2008 12:44 PM Post subject: Pump marble gun

Staff Sergeant

Joined: 21 Oct 2007
Posts: 100
155.76 Spud Bux

Well,I just sketched this and as you can see the trigger mechanism is not ready,but I hope that you will understand how it works. Very Happy

Would it be possible to shoot 5-10shots with 5-10Joules of kinetic energy with marbles?The chamber is 1Liter and pressure is 8bar.

Kuulapyssykkä.JPG

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Last edited by Gunner on 01/11/2008 6:07 AM; edited 2 times in total

Brian the brain

Posted: 01/10/2008 12:46 PM Post subject:

Dutch Spud Clan Leader
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Joined: 05 Dec 2005
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it will work but won't have too much power. It will also fire very inconsistent.

Gunner

Posted: 01/11/2008 7:18 AM Post subject:

Staff Sergeant

Joined: 21 Oct 2007
Posts: 100
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"it will work but won't have too much power"? I understand but how can I make it better?Suggestions Very Happy

Necrosis

Posted: 01/11/2008 11:48 AM Post subject:

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Joined: 03 Jul 2007
Posts: 201
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Gunner wrote:

"it will work but won't have too much power"? I understand but how can I make it better?Suggestions Very Happy

Raise the pressure? Rolling Eyes

Be careful though.

Hawkeye

Posted: 01/11/2008 12:52 PM Post subject:

Major

Joined: 21 Jan 2007
Posts: 357
994.02 Spud Bux

Raising the pressure helps, as does using a weaker spring behind the valve. You can also manipulate how long the valve opens by using a heavier hammer or a stronger spring to propel it. The more air you can let escape, the stronger it will shoot. At the expense of number of shots of course.
A fairly large chamber pumped up to 200-350 psi would probably give you a nice repeater.
Keep in mind that a hammer valve tends to self regulate to a degree. As the pressure drops, the valve is naturally less resistant to being opened and more air will escape. Some consistency can be expected from the shots in the middle of the series.

jackssmirkingrevenge

Posted: 01/11/2008 13:08 PM Post subject:

space monkey
<b>Donating Member</b>

Joined: 15 Mar 2007
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Valid points but I think a 1 litre volume is still too low, I would go for at least 3 times that amount.

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