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Chamber size?

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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Chamber size?

Unread postAuthor: sparkey » Wed Apr 02, 2008 1:34 am

I have tried to figure this out with the ggdt. I want to shoot nerf rockets from a 2x26"ish barrel with a 1" modded sprinkler valve at around 100psi. A 3" or 4" chamber should be about how large? I finished prototyping the breach loader tonight. If I can get the chamber small enough it will be an inline.
I cant figure the ggdt out yet.
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Unread postAuthor: jackssmirkingrevenge » Wed Apr 02, 2008 1:39 am

A 1:1 ratio is more than enough, so 10" of 3" pipe or 6" of 4" pipe will suffice.
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Unread postAuthor: sparkey » Thu Apr 03, 2008 12:23 am

Thanks. I was pretty sure about it but wanted a second opinion.
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