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coaxial piston question

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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coaxial piston question

Unread postAuthor: smiley_666 » Wed Aug 12, 2009 8:36 am

i am planing on making a coaxial valved cannon in the near future, and i was wondering if the shape of the piston could improve performance at all.
is the curved piston going to be of any advantage? im assuming it would be but i could be wrong.

curved
Image
normal
Image

thanks in advance
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Unread postAuthor: jackssmirkingrevenge » Wed Aug 12, 2009 10:21 am

Call me a shameless pervert but the curved one looks like BEWBS!!!!! :D

You probably will get better performance but I doubt it will be so dramatic, to the extent that you'll need a chrony to measure the difference.
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Unread postAuthor: twizi » Wed Aug 12, 2009 10:59 am

jackssmirkingrevenge wrote:Call me a shameless pervert but the curved one looks like BEWBS.


i wonder if silcone implant make good sealing faces :roll:
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Unread postAuthor: c11man » Wed Aug 12, 2009 11:06 am

i dont think they would work. too squisy :D
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Unread postAuthor: twizi » Wed Aug 12, 2009 11:07 am

siclicone is like rubber so it might might need to try that with my girlfriend :shock:
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Unread postAuthor: c11man » Wed Aug 12, 2009 11:44 am

its like very soft yet firm rubber......
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Unread postAuthor: smiley_666 » Wed Aug 12, 2009 7:11 pm

:lol: didnt mean to make it look like that, i didnt even notice untill you pointed it out.
so not really worth all the stuffing around to make it with only a small performance boost... ok, i gues ill go the easy route :P
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Unread postAuthor: inonickname » Thu Aug 13, 2009 4:01 am

No need for the two semicircles, just a concave cone will increase power. However, the increase won't be realized without a chronograph.
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