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Bolt action co-ax IDEA

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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Bolt action co-ax IDEA

Unread postAuthor: farmerboy32 » Tue Jul 26, 2011 5:15 pm

this is a idea i had while day-dreaming at work the other day haha.
leave any questions or comments below and i will address them as best as i can.
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Unread postAuthor: Lockednloaded » Tue Jul 26, 2011 5:27 pm

Pictures are gone, but this is what you may want
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Unread postAuthor: Mr.Tallahassee » Tue Jul 26, 2011 5:31 pm

The bolt action must be in-line with the barrel. Coaxial and bolt action dont really get along well. For bolt action, I suggest an over-under or inline gun.
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Unread postAuthor: POLAND_SPUD » Tue Jul 26, 2011 7:56 pm

Just build a QDV cannon, where the piston is the bolt itself

It can either be springloaded (so mechanical) or unbalanced valve. Personally I think that the unbalanced one would be better.

here, have a look -> http://www.spudfiles.com/forums/viewtop ... tml#324325

a small sear could be hooked up with the trigger... I am sure someone can post a suitable trigger system for it
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Unread postAuthor: farmerboy32 » Tue Jul 26, 2011 8:07 pm

@Mr.Tallahassee, i was thinking it would be able to shoot ball bearings, bb's , etc. so the pipe would just need to be bent,and not 90 degree elbows.
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Unread postAuthor: Gun Freak » Tue Jul 26, 2011 8:13 pm

That diagram doesn't really make sense...
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Unread postAuthor: POLAND_SPUD » Tue Jul 26, 2011 8:16 pm

lol... you're right
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Unread postAuthor: Mr.Tallahassee » Tue Jul 26, 2011 9:14 pm

A gravity feed magazine and an o-ring detent would work better with the bolt action. You could drill a hole and use a pressure rated snap tee with a hollow, o-ring sealed bolt. Now that I notice it, that diagram doesn't make sense.
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Unread postAuthor: Gun Freak » Tue Jul 26, 2011 9:24 pm

The QEV exhausts the atmospheric barrel pressure into the chamber through a breech load :toothy10:
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Unread postAuthor: Mr.Tallahassee » Tue Jul 26, 2011 9:48 pm

Or perhaps, if a blow gun were connected correctly, it would actually work. It would just have horrible flow. Give me five minutes with paint. :wink:
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Unread postAuthor: jackssmirkingrevenge » Tue Jul 26, 2011 10:59 pm

Gun Freak wrote:That diagram doesn't really make sense...


Maybe it's a bit like this but with the curve on the other end ;)

Though it actually does make sense if the QEV is properly configured, the ball valve pilot needs to be at 90º

Here's a more plausible configuration:
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