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Shock pumps? for volume?

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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Shock pumps? for volume?

Unread postAuthor: iknowmy3tables » Mon Sep 10, 2012 12:23 am

I need a portable way of monitoring and mantaining the pressure of my AT4 currently I don't have any tire gauges on my pumps and my large pump so I was looking into buying a shock pump because they are reasonably priced and I could finally do some high pressure projects.

here's what I was thinking, I have a chamer and pilot with about 9 cubic inches in volume, I would use my old-dying-gaugeless stirup pump to reset the piston and pump my cannon to ~10 psi, then I would attach the shock pump and pump to no more than 60psi? how difficult would this be?
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Unread postAuthor: jackssmirkingrevenge » Mon Sep 10, 2012 12:31 am

Not a lot of effort on the stroke, but it would take you a while.

Quick and dirty calculation, let's say the pump has a stroke volume of 0.3 cubic inches, so you get a 0.5 psi increase every stroke, meaning that taking it to 60 psi would take 120 strokes.

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