how a coaxial piston works

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
dilweed
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Mon Jul 28, 2008 6:25 am

hi i bought £50 pounds worth of material for a t piston and it didnt work so im going to try a coaxial piston. i have read the posts about but im not a 100% shure. id love if id get some conztructive feedback its my first. I try to state how i think the valve works. theres a piston in a large chamber. inside the chamber a smaller pipe wchich is the barrel is threaded about 3/4 into this chamber. back to the piston again its solid and airtight with a rubber tip which is held in place with a screw?. there is a spring thats not that strong but enough to hold it in place and allow it to slam back when prefferably a qev opens up. the space between the qev and piston should be quite small. you also fill the chambert where the barrel is? please could someone give me the math, proportions and suggestions for the material and especially how the COAXIAL (that how you say it?) piston is constructed. thnks

dilweed,
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Sticky_Tape
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Mon Jul 28, 2008 8:56 am

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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jackssmirkingrevenge
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Mon Jul 28, 2008 10:49 am

Also worth pointing out the name of this section:

Theories/Accessories Database (NOT FOR HELP-ME POSTS!)
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Sticky_Tape
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Mon Jul 28, 2008 11:03 am

Good one JSR didn't notice that one this guy needs to read.
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Counterstriker
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Mon Jul 28, 2008 11:17 am

His name speaks truth, just messing with ya.
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dilweed
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Tue Jul 29, 2008 4:00 am

i chose my name so an asshole cant trace me, then rape me. sorry but i thought this section of the form could provide theories questions-like mine. no one is perfect and i wont do it again, simple as that. thank you sticky_tape. i found that anamation a year ago and have been looking ever since.
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