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Old 07-06-2014, 08:18 AM #1
Dygrasi
 
 
Join Date: Jul 2012
Mini GS pressure problems.

Cant get my Mini to work under 220psi, and at that pressure its going around 250 - 260 fps. only way to get it higher is to turn the pressure even higher.
Tried the tuning guides nothing works.
So just wondering where and what the problem can be?
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Old 07-06-2014, 08:24 AM #2
ironyusa
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Lube the poppet oring.
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Old 07-06-2014, 11:25 AM #3
Dygrasi
 
 
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Thanks that help a little, now its up to 270 at 200psi.
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Old 07-06-2014, 11:52 AM #4
ironyusa
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Where is your back cap and dwell?

Keep the dwell at 7-8ms and the back cap at 1.5 turns out MAX (I prefer 1.25 turns out max). Usually I end up with 150-160psi to get to 300fps with a slight underbore.
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Old 07-07-2014, 03:43 AM #5
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Got it down to 170 and 280 fps, and thats good for now.
Thanks for the help.
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Old 07-07-2014, 07:30 AM #6
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What did you end up adjusting?
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Old 07-07-2014, 12:14 PM #7
Dygrasi
 
 
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Dwell it was at 5 so bumped it up to 7. and some tuning of the back cap. (ended up at around 1.3 turns)
But waiting for a lurker bolt so not going to do more until i get it.
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Old 07-07-2014, 02:23 PM #8
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I would suggest you break in the GS first.. i had some problems running the Luker bolt with a brand new GS.. now thats ive run a few cases thru it seems to work good now(STOCK) I also had a fps issue even witht he stock set up at first... fps is increasing and less inconsistent as the gun is breaking in.. when i ran the Luker i couldnt get it over 250 fps... gonna wait a few more case before i go back to the Luker.. post on here if u have any problems with fps with the Luker bolt.. how many case have u ran thru yours so far?
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Old 07-07-2014, 03:54 PM #9
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Quote:
Originally Posted by Dygrasi View Post
Dwell it was at 5 so bumped it up to 7. and some tuning of the back cap. (ended up at around 1.3 turns)
But waiting for a lurker bolt so not going to do more until i get it.
stock dwell should be at 8ms.
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