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Old 01-26-2009, 05:24 PM   #1 (permalink)
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tips for springing an A/C pump

i'm building 2 A/C pump guns and would like tips on what springs to use on the valve and hammer.
would it be the same as springing a semi a/c?
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Old 01-27-2009, 05:27 AM   #2 (permalink)
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blue valve/green main/palmers valve stem works well for the majority of set ups and gets rid of hammer bounce.
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Old 01-29-2009, 08:53 AM   #3 (permalink)
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thanks for the spring suggestion.

but now for the stupid question, whats hammer bounce, and what causes it?
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Old 01-29-2009, 09:41 AM   #4 (permalink)
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The hammer hits the valve stem the first time, but then bounces on the stem and re-opens the valve a couple of more times, letting extra air out (causing a slight sputtering sound).
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