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My loading mechanism(WARNING:Very CRUDE)

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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My loading mechanism(WARNING:Very CRUDE)

Unread postAuthor: AnotherSnappedLine » Sun Feb 13, 2011 9:32 am

For a small bore pneumatic(1/4") I decided this will work best-

BROWN=Wood with 1/4" holes drilled in the middle(Allows the tube to twist and slide freely)
GREY-1.4" tubing
BLACK-Male and female fittings(Twist to close/fire and the opposite direction to open/load)
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Unread postAuthor: jrrdw » Sun Feb 13, 2011 4:48 pm

We call this set up a "breach load", but with your ammo being that far from the valve you lose some power. We call that "dead space". It's better to have the ammo as close to the valve as you can. But your set up will still work.

Why don't you post your design in one thread so all the information can be in one place.
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Unread postAuthor: AnotherSnappedLine » Sun Feb 13, 2011 5:28 pm

Dead space as in the gap between the 2 barrels? They're designed to twist together.

Or did you mean dead space because the barrel is far from a valve? If you meant that, it's just a crude drawing, the valve would be a QEV <an inch behind the pellet.

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Unread postAuthor: AnotherSnappedLine » Sun Feb 13, 2011 5:31 pm

Here is the revision-[/img]
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Unread postAuthor: Gun Freak » Sun Feb 13, 2011 5:50 pm

Why even space it at all? Put the left threaded fitting right after the piece of wood. That was there's no dead space.
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Unread postAuthor: jrrdw » Sun Feb 13, 2011 8:19 pm

Dead space = space in between the valve and ammo.
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Unread postAuthor: AnotherSnappedLine » Sun Feb 13, 2011 10:18 pm

Ok, that makes sense. Does performance really change that much with dead space?
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Unread postAuthor: Crna Legija » Sun Feb 13, 2011 11:41 pm

its not a crazy improvent if you only making it a inch difference but it would make the over all look better and simpler with better prefomance
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