piston bumper

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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MrCrowley
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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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Velocity
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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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hi
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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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A-98
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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.
There are rules, and then there are hundred dollar bills.
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