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Educate Me: Why wouldn't you use a QEV?

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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Unread postAuthor: psycix » Wed Feb 03, 2010 3:47 pm

A homemade piston valve may offer a better flow than a QEV. That's why.
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Unread postAuthor: tauschung » Thu Feb 04, 2010 3:39 pm

Ok, I think I got it. Now to ask an obvious question.

How would you know which valve would perform better by design (in say a smaller cannon)? By testing it, or would the GGDT be able to predict the performance?
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Unread postAuthor: psycix » Thu Feb 04, 2010 4:23 pm

GGDT can predict the performance if you model it accurately. Of course testing will tell it for sure.
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