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piston bumper

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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Unread postAuthor: MrCrowley » Sun Jun 10, 2007 11:59 pm

A-98 wrote:tis a good idea. basic rule of thumb, if its under pressure, your main valve, and moves, you need a bumper.


So your saying a diaphragm needs a bumper :wink:
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Unread postAuthor: Velocity » Sun Jun 10, 2007 11:59 pm

I would drop the spring. A hose bumper will be fine for preventing the piston from damaging the valve when it actuates (assuming that you installed the hose properly). A spring just gets deformed (thats my experience at least) unless you put it in perfect. It can also easily hinder the movement of the piston if it gets bent out of shape. The only real advantage of a spring is that you no longer need to fill from behind the piston (useful in semi-automatic spudguns).
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Unread postAuthor: hi » Mon Jun 11, 2007 12:03 am

how does one "properly" install a hose? the piston is actually in the bushing of the pilot, like the mauler valve, so a hose is kinda big, but ill do it if its really better than a spring.

the spring by the way has a maximum force of about 5 pounds, i messured on a scale, so i dont think its enough.
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Unread postAuthor: A-98 » Mon Jun 11, 2007 12:12 am

MrCrowley wrote:
A-98 wrote:tis a good idea. basic rule of thumb, if its under pressure, your main valve, and moves, you need a bumper.


So your saying a diaphragm needs a bumper :wink:


darnit, a loop hole. ok....maybe it isnt a rule of thumb, more of a ..erm...thing.... :oops:

lol

but, let me rephrase that, if involves a piston, use a bumper.
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