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valve hybrid design

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Unread postAuthor: GalFisk » Sun Dec 09, 2007 11:49 am

You can build a variation of the DFTV (http://antennalaunchers.com/dftv19/) that opens when the chamber pressure rises. My copper hybrid uses this, it has been dry-fired successfully a few times but I haven't had time to finish it completely (it cn also be used as a pneumatic and there the valve performs flawlessly as well).
This is the first concept drawing, the design has changed a good bit but the valve is essentially the same: http://home.no.net/galfisk/images/hybrid/hybrid.gif
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Unread postAuthor: iknowmy3tables » Mon Dec 10, 2007 12:18 pm

hmm the design actully vents the piston and does it faster than a tiny pop off, just what I'm looking for thanks
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