piston bumper

[roughboy]

when building a piston gun is it important to install a bumper?

Is a bumper really important? even on an all steel piston cannon?



8) thanks youses

[A-98]

yes, very, very , very important. i have an o-ring bumper on a piston that weighs less than a gram, but i still have one.

[jackssmirkingrevenge]

It's a simple thing to add and has its benefits in the long run - even steel will deform from repeated impacts, and after a while that will easily jam your piston.

[TwitchTheAussie]

Yup go with the O Cant wait to see it.

[chaos]

you guys have just made me relize how important these are, ill put one on mine asap.

yer use one mine is steel and it will help keep your piston from jamming.

[jackssmirkingrevenge]

you guys have just made me relize how important these are, ill put one on mine asap.

Didn´t yours have a spring already?

[chaos]

Yer its got one. why, dont i need one if i got a spring?

[jackssmirkingrevenge]

Well, a bumper is something that prevents the piston from slamming into the chamber endcap at full force - in this case, you have a spring for a bumper

[AmYisroelChai]

Jack how strong would you say the spring needs to be for it to be a succesfull bumper? Also wouldnt the spring itself warp?

I am trying my first Barrel sealer now and I have a decent spring I want to try out for a bumber. I am concerned because it compresses with about 1-2lbs of force...

[jackssmirkingrevenge]

Personally I'd rather use a shock-absorbing bumper like rubber padding instead of a spring - simply because the spring won't allow maximum acceleration at the time of firing when it's most critical, which will hurt performance a little.

[Panzerfaust]

I use a piece of thick rubber hose folded over behind the piston. At first i used some pipe insulation foam tube but that got sucked into the pilot.

[chaos]

my barrel sealer has a spring that allows the piston to operate at 50psi, and it gets coilbound (fully compressed) when i shoot it, maybe a rubber washer behind the spring would help.

[roughboy]

what if my piston is made of hot glue do i still need a bumper?

[A-98]

tis a good idea. basic rule of thumb, if its under pressure, your main valve, and moves, you need a bumper.

[hi]

sorry for kicking up an old thread, but im working on another piston valve and i have a spring and some hose for a bumper. can i use both just for extra safty? does it really matter?