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semi-auto or bolt action

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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Is it possible?

Poll ended at Mon Jul 02, 2007 12:20 pm

Easily
4
33%
May be difficult
6
50%
Just give up now
1
8%
Just give up now
1
8%
 
Total votes : 12
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Unread postAuthor: knappengineering » Thu Jun 28, 2007 12:51 pm

Do you have any suggestions of what to use for a bolt?
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Unread postAuthor: Infernal Maveric » Thu Jun 28, 2007 3:33 pm

a smaller piece of pipe that fits well inside your barrel
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Unread postAuthor: lukemc » Thu Jun 28, 2007 3:55 pm

realy you just have to look around but like i said if you cant find anything just mold one with like hot glue (i dont know if you can drill though it though) or epoxy would work
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Unread postAuthor: knappengineering » Thu Jun 28, 2007 4:05 pm

ok thanks, i already tried the hot glue, but it won't come out of the mold. I'll just keep looking
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Unread postAuthor: lukemc » Thu Jun 28, 2007 4:17 pm

you have to use a lubriacant like cooking spray itll slide right out
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Unread postAuthor: VH_man » Thu Jun 28, 2007 4:35 pm

try K&s precision brass tubing. 17/32 fits inside 1/2 inch copper nicely.

and thats a great idea for a bolt. why didnt I think of that... gaaa.
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Unread postAuthor: lukemc » Thu Jun 28, 2007 4:42 pm

VH_man wrote:try K&s precision brass tubing. 17/32 fits inside 1/2 inch copper nicely.

and thats a great idea for a bolt. why didnt I think of that... gaaa.


maybe itz cuz i iz soo smert lol
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Unread postAuthor: knappengineering » Thu Jun 28, 2007 7:53 pm

I did use cooking spray, but it still didn't come out. Anyway, I'm using a wooden dowel that fits nicely in the barrel. All it needs is a hole in the middle.
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Unread postAuthor: VH_man » Thu Jun 28, 2007 8:35 pm

GAAAHHH!!!! that will reduce flow like a Mother!!!!!!

use the brass tubing. sure, its expensive, but your preformance will not drop because of it.

either that, or you get veneer tubes. or, you can use ur idea. whateveres best.

if youre still gonna use wood, i reccomend drilling lots of small holes, not one HUGE one, it will maintain streingh better.
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Unread postAuthor: Infernal Maveric » Fri Jun 29, 2007 2:22 am

Wood will NOT make a good bolt as it will choke the barrel size so much, its pretty much guaranteed to rip it out of the barrel and ruin the barrel end of the gun.

Hot glue would again have the same problem that the wood would have, it would choke the flow down and tear the gun up, and drilling in too many holes would just make it like a bit of rubber in the barrel, that will be shot out eventually.

Like suggested before, use brass pipe that fits inside the barrel and what not. But some smaller PVC pipe will suffice too.
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Unread postAuthor: knappengineering » Fri Jun 29, 2007 6:51 pm

Ok, I'll have to go to the store and look for some copper pipe then. :(
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