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How cold is too cold?

A place to ask general spud cannon related questions.
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How cold is too cold?

Unread postAuthor: metalmeltr » Fri Feb 18, 2011 9:06 am

It's in the 50s here, is that too cold for a pvc advanced combustion? GGDT says max psi 94. I have a burst disk as well.
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Unread postAuthor: Crna Legija » Fri Feb 18, 2011 10:21 am

The PVC pipe should have what temp its rated to at x amount of pressure.
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Unread postAuthor: jimmy101 » Fri Feb 18, 2011 8:26 pm

-_- wrote:The PVC pipe should have what temp its rated to at x amount of pressure.

The temp rating on PVC pipe is really not very useful for this purpose. Technically, the pressure rating goes up as the temp goes down, but that is for a static load (like water pressure). Pipe rated at 280 PSIG at 70F is rated to a higher pressure at 50F.

The pipe gets more brittle as the temp goes down, but that has nothing to do with the pressure rating since again the pressure rating is for static, not dynamic, loads.

50F shouldn't be a problem. Temps down in the 30's really shouldn't even be a problem for a 1X propane fueled gun. Even if the round jams in the barrel it shouldn't be a problem.
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