Exhaust value with decent trigger feel

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.
Boomerang
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Thu Aug 20, 2020 4:21 pm

New site looks great! Come a long ways since the SpudTech era!!

At any rate, playing around with a piston build for the first time in a decade. I've used the basic air compressor blow gun plenty of times in the past, but they just feel like they are made of $1 worth of chinese steel (odd, right?). I accept that a valve will never feel as nice as a sear based system, but hopefully there's something a little more precision? Doesn't need to be very big... GGDT is still showing plenty of flow with a 0.15" dia exhaust. (the design has an assist piston, so I only need to introduce a 15psi pressure difference between chamber and pilot, and the main exhaust will dump out the side).

If the options are all rather expensive, I will just stick to the blowgun for this test bed.
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Anatine Duo
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Fri Aug 21, 2020 6:45 pm

lift off valve, sear release:)

Trigger feel as you design the trigger-sear geometry

Also saves on a blow gun ( I am extremely cheap)
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jackssmirkingrevenge
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Wed Oct 07, 2020 4:27 pm

Why not take a trigger and hammer mechanism from something basic and cheap like a Crosman 2240 or a paintball marker, and use that to knock the valve open?
Anatine Duo wrote:
Fri Aug 21, 2020 6:45 pm
lift off valve, sear release:)
Also a good option and simpler to implement than my previous suggestion, it is basically the principle behind the Crosman 1400: https://spudfiles.com/viewtopic.php?f=29&t=26868

One thing to keep in mind is that the piston becomes a projectile in its own right so a way of stopping it safely needs to be taken into account.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Tipsypyro
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Mon Oct 12, 2020 1:38 am

The pressure release button from a tire inflator has a short stroke and s solid feel, and lends itself well to all kinds of trigger linkage possibilities.
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