Quote:
Originally Posted by Kos-Mos
You can make one easilly with a bunch of old powerlets, a drill, a bench wise and a tap. Just need to install a fill valve from madbull (they are steel and withstand CO2 in HP grenades) at the end of the powerlet and drill a clearance hole in the large flat screw for it.
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I have an idea to prototype one, but I would use appropriate material as I don't think a 'recycled' 12g powerlet would safely withstand the repeated fill/empty cycles.
It is worth noting that my original question was based on an almost complete lack of knowledge of the material strength requirements involved. I would have to drag out some engineering texts from the attic and determine what material and wall thickness would be required to handle CO2 at 900 psi (I believe that's the partial pressure of the gas in a CO2 powerlet or tank).
Using 12g powerlets to fill the mag would defeat the purpose of adding a fixed reservoir. My thought was to fill mags using a paintball type CO2 tank with an appropriate fill adaptor (such as the needle adaptors used to fill grenades). Logistically this would be very similar to filling propane mags from a cylinder; the cylinder is generally considered too bulky to carry while playing. The benefit of using CO2 would be better performance in cold weather (an issue in this part of the world). I used to play paintball in the winter and found that while muzzle velocity decreased a little in cold weather, CO2 powered guns were still quite effective.