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Why do you have to COCK b4 air up |
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EliteEagleX 
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Joined: 07 August 2006 Location: United States Status: Offline Points: 23 |
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 Topic: Why do you have to COCK b4 air upPosted: 08 August 2006 at 12:48pm |
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I've been wondering this for awhile, and just never asked anyone, Why do you have to cock the A-5 before airing up? If the gun freezes then it uncocks while it's aired up so.... isn't that the same as not cocking it before it airs up?
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pattison
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Joined: 30 August 2002 Location: Korea, North Status: Offline Points: 384 |
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Posted: 08 August 2006 at 1:50pm |
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so the valve spring doesn't have to fight against the hammer spring
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Eat The Brisket
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Bruce A. Frank
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KRL Reincarnated? Joined: 27 March 2004 Location: United States Status: Offline Points: 3063 |
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Posted: 08 August 2006 at 2:07pm |
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Pressure from the power spring can be strong enough to overcome the power of the poppet valve spring...thus holding the valve open when the marker is not cocked. Installing the gas at that point dumps right on through the valve. When the marker is cocked there is no pressure on the poppet valve stem so the spring inside the valve keeps it closed. Once the valve is aired up the gas pressure then also keeps the poppet valve closed. The flow of gas out of the valve, when the hammer hits the stem, tends to blow the valve closed again which also helps to push the hammer back off the stem. That, along with the gas escaping around the stem where it goes through the power valve's back plate, throws the hammer back far enough to allow the sear to engage, then holding the hammer in the cocked position. Is that clear enough? Now, markers with LP kits installed have a softer spring inside the power valve. Which makes the likelihood of valve leaking, when the marker is aired up when uncocked, even greater. |
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EliteEagleX
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Posted: 08 August 2006 at 2:52pm |
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Ah, makes sense. I was just always wondering that, thanks
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Enos Shenk
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Posted: 08 August 2006 at 7:38pm |
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 Cupcake for Bruce for a perfect explanation. |
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Monk
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Posted: 08 August 2006 at 10:16pm |
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Its not really needed though.
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Bruce A. Frank
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Posted: 09 August 2006 at 3:30am |
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What? The cup cake or the explanation? |
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Monk
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Posted: 09 August 2006 at 1:46pm |
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The cocking before the gassing. lol. You deserve alot more than a cupcake though lol. |
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EliteEagleX wrote: