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low velocity |
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gnnr 
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Joined: 28 October 2007 Location: United States Status: Offline Points: 4 |
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 Topic: low velocityPosted: 28 October 2007 at 8:59pm |
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I've got an A5 with Response(factory). I run HPA 4500-remote. Aftermarket JCS stock w/ rear spring adjustment nut. And a flatline barrel. Today I couldn't get it to chrony over 250 mostly around 200. Temp outside 60 degrees. I tightened the rear spring, adjusted velocity nut (with absolutely no effect). Hmm? Any Ideas?
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I should have never sold that old smg60!
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hybrid-sniper
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I feel violated. Joined: 09 June 2004 Location: San Mateo, CA Status: Offline Points: 10109 |
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Posted: 28 October 2007 at 9:15pm |
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Take the stock off and try again. Are you using an HP output tank?
Edited by hybrid-sniper - 28 October 2007 at 9:15pm |
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Snake6
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Outranked by guitarguy? Joined: 11 September 2003 Location: United States Status: Offline Points: 11229 |
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Posted: 28 October 2007 at 9:24pm |
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gnnr
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Joined: 28 October 2007 Location: United States Status: Offline Points: 4 |
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Posted: 28 October 2007 at 11:39pm |
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It's pre-set so... I guess it is high pressure output. Thats the question, right? I'll try it w/out the stock but, then what, can I change the spring or shim so that I can use the stock?
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I should have never sold that old smg60!
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Snake6
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Posted: 28 October 2007 at 11:43pm |
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They have preset high and low pressure output tanks. There are known problems with alot of stocks that built-in rva's. Also is your FVA screwed out flush with the powertube?
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gnnr
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Posted: 28 October 2007 at 11:55pm |
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It's high pressure. Flush... not sure but I tried adjusting it to about every position. Note: used to work fine with the stock. Changed parts in the cyclone recently if that is relevant.
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I should have never sold that old smg60!
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gnnr
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Joined: 28 October 2007 Location: United States Status: Offline Points: 4 |
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Posted: 03 November 2007 at 4:26pm |
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Thanks much Snake! I tried it with the original parts and started with the fva all the way in and adjusted out. Got good velocity. Re-installed the stock and adjusted the rva way in and bingo!
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I should have never sold that old smg60!
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hybrid-sniper wrote: