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Bolt-less piston design

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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Total votes : 6
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Bolt-less piston design

Unread postAuthor: c19o » Wed Feb 21, 2007 1:03 am

Here is a new bolt-less piston design i thought of when my other piston wouldn't work. Also used this kind of piston on my marble gun. Its about a 3" piston that fits in 4" sch40 pipe. I used epoxy ( lots of it to make it extra strong) to glue a washer to the 3" pipe which is in the coupler. Then a whole bunch of epoxy to glue the neoprene to the washer. To make sure the air wouldnt tear the neoprene off i put a ring of epoxy around the neoprene at the front. and in the hole in the washer. Ill post the cannon im using this piston in later after i get a decent pilot valve. (instead of a ball valve, i dont like ball valves to fire my cannons)

Image

Image

yeah sorry for the bad pictures i took them with a really old webcam.
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Unread postAuthor: jrrdw » Wed Feb 21, 2007 6:08 am

That looks good, what kind of bumper are you going to use? Looks like it could bust your stuff up if you don't stop it from hitting the back. Concerns i have with mine are keeping from knocking the bumpers loose. With a steel piston, that would really worry me.
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Unread postAuthor: experament-u2 » Wed Feb 21, 2007 7:33 am

me to i would be scared of it smashing my T apart
a steel T on the other hand would onlt get a bit dinged up
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Unread postAuthor: c19o » Wed Feb 21, 2007 10:23 pm

I'm using this piston in a coaxial like the pac 5 except longer chamber and barrel. So i'm not using a tee My bumper is that clear tubing. It's kind of stiff. Im also thinking of making a valve in a tee sort of like a supah or mauler, any advice to give would be great.
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