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SpudFiles Forum Index » Pneumatic Cannon Discussion » BB/Marble Rifle Design
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STHORNE
PostPosted: 05/15/2008 18:21 PM    Post subject: Reply with quote

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(correct me if I am wrong) A longer barrel won't increase power, it will increase accuracy. The power is in the chamber my friend. The chamber...
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FordGtMan
PostPosted: 05/15/2008 18:23 PM    Post subject: Reply with quote

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Quote:
If not made well they can be very unreliable and have a tendency to break


I think if you use commercial check valves it is fool proof, but i have never made one.
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bigbob12345
PostPosted: 05/15/2008 18:25 PM    Post subject: Reply with quote

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The commercial check valves are rated to 150psi Rolling Eyes
Not suitable for a high pressure pump in my opinion

And sthorne
A longer barrel can help performance by an unbelievable margin, not just in accuraccy but in power
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FordGtMan
PostPosted: 05/15/2008 18:27 PM    Post subject: Reply with quote

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Mcmaster have ones that go up to 3000 psi... Item: 8549T21
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bigbob12345
PostPosted: 05/15/2008 18:47 PM    Post subject: Reply with quote

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Yes but that thing is 20 bucks
Making your own wouldnt cost more than 5
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FordGtMan
PostPosted: 05/15/2008 20:48 PM    Post subject: Reply with quote

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The ones that are rated to 500 psi are like less than 10 bucks so i think would use them instead though.
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