Bolt-less piston design

[c19o]

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)





yeah sorry for the bad pictures i took them with a really old webcam.

[jrrdw]

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.

[experament-u2]

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

[c19o]

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.