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Old 11-18-2012, 09:21 PM #1
ncstatered21
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I've tried tuning Lurker bolt so many times and cannot seem to chrono above 250 with the pressure below 150ish.

I've tried both tuning methods. Someone told me to set pressure to 120 and dwell stock then chrono till where I want i. Still wouldnt go above 250.

I really don't know what to do but would like to get the pressure down so I can get it smoother.

I have dwell stock and pressure at 160 and back cap flush. I was finally shooting between 270-290 but wasn't satisfied obviously.
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Old 11-19-2012, 12:42 AM #2
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its probably def not your reg gauge considering my lurker bolt wouldnt chrono anywhere near 280 unless the pressure was at 180psi and stock dwell, i was pretty disappointed and put the stock bolt back in
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Old 11-19-2012, 02:53 AM #3
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Lurker Bolts takes a lot of trial and error. By means of messing with the bolt guide orings, spacer orings, as well as spring combinations. But once you get it right it shoots pretty smooth. Alot of hassle if you have the time and patients. As for following someone else's setup all guns will not perform the same with the same PSI and Dwell.
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Old 11-19-2012, 07:58 AM #4
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From what I hear lurker bolts need a lot of tweaking. There is a lurker bolt help thread, maybe a page or two back.
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Old 11-19-2012, 08:41 AM #5
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Quote:
Originally Posted by Blak Katalyst
From what I hear lurker bolts need a lot of tweaking. There is a lurker bolt help thread, maybe a page or two back.
I've been through pretty much all of it. But I guess I gotta keep trying.
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Old 11-19-2012, 05:20 PM #6
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What spring are you using? And how's the bolt on the bolt guide slides smoothly with little resistence or alot? And hows you paint to barrel match, under or overbore?
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Old 11-19-2012, 07:38 PM #7
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If you're having that much issue, I can replace the bolt - not being able to run under 150psi no matter what is NOT normal.
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Old 11-20-2012, 06:24 AM #8
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I would maybe try all 015 o-rings on the bolt guide instead of using the recommended 012. It sounds like the bolt has too much resistance during cycling.
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Old 11-20-2012, 07:48 AM #9
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I would maybe try all 015 o-rings on the bolt guide instead of using the recommended 012. It sounds like the bolt has too much resistance during cycling.
+1
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Old 11-21-2012, 07:20 PM #10
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Originally Posted by Lurker27 View Post
If you're having that much issue, I can replace the bolt - not being able to run under 150psi no matter what is NOT normal.
Are you serious thats the lowest pressure I can run even with Boss's short spring.
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Old 11-22-2012, 08:34 PM #11
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Quote:
Originally Posted by Lurker27
If you're having that much issue, I can replace the bolt - not being able to run under 150psi no matter what is NOT normal.
I've got it set at barely under 160, dwell 7, back cap flush.

I think I was between 260-280 so very inconsistent. I'm playing on Sunday again and will give it another chance.

Bolt guide is 14,14,13 then spacer. Spacer has a 16 (harder than normal black orings) on outside and a 14 on inside I think. Spacer sits snugly and only moves cause of the space that it sit in being chamfered.

I'm going to give it another shot on Sunday and see what happens. I seem to be tinkering with it more at the field than actually playing. I polished the poppet tonight so we will see what happens.

Any suggestions on settings or where to start to get consistent and lower OP?
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Old 11-22-2012, 08:36 PM #12
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Holly crap backcap at flush? How many turns out is that? I thought anything over 2.5 turns was to much and thats not even flush

I have a boss bolt so maybe its different but that seems like alot. Bet its super smooth though
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Old 11-22-2012, 09:02 PM #13
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Originally Posted by JoshC90 View Post
Holly crap backcap at flush? How many turns out is that? I thought anything over 2.5 turns was to much and thats not even flush

I have a boss bolt so maybe its different but that seems like alot. Bet its super smooth though
It's like 3 turns out ish.


I just want to get this thing running right and then forget about it.
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Old 11-23-2012, 02:21 AM #14
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Here is my two cents...

Take out the battery on your mini. A test mini is easier to diagnose thanone with bugs. The board resets
when the battery its back in.

I assume your bolt is installed to your liking. I put on a fresh coat of lube. Clean the bore as well.

I stay turned to 160 psi. The back is turned 270 degrees from flush, in the back (go backwards from midnight to 3 pm). If to lose, turn righty righty. If to much kick, go back left in time 5 to 10 minutes.

I test 3 and 5 shot tests at 40' and 25'. Closer shots sometime I pump 20 to 30 balls. Set if the asa keeps pressure. The Luker bolt is more efficient on air, it should feel similar to stock.

I enjoy the Luker bolt in my mini.
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Old 11-23-2012, 06:26 AM #15
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Here is my two cents...Take out the battery on your mini. A test mini is easier to diagnose thanone with bugs. The board resets when the battery its back in.
This doesn't work with the newer mini's with the Shockwave board.

Last edited by [NA]WARLORD : 11-23-2012 at 06:30 AM.
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Old 11-23-2012, 06:34 AM #16
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Bolt guide is 14,14,13 then spacer.
Weird. The stock bolt guide o-rings should be 3 x 015. Try going back to all stock o-rings with recommended settings and see if your FPS improves.

Quote:
Originally Posted by ncstatered21 View Post
It's like 3 turns out ish.
If you're getting lower FPS, this may be the cause, the recommended "sweet spot" for the back cap is 1.5 turns out from all the way in.
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Old 11-23-2012, 10:35 AM #17
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I swear I never got all 15s for stock. I'm goin to go to the hardware store and get some. I'm sizing them on a piece of paper from oring monkey but I think it should be correct. When I didn't have a smaller oring closest to the spacer the bolt was wobbly.

EDIT: I have an Axe!
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Old 11-23-2012, 10:51 AM #18
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Quote:
Originally Posted by ncstatered21 View Post
I swear I never got all 15s for stock. I'm goin to go to the hardware store and get some. I'm sizing them on a piece of paper from oring monkey but I think it should be correct. When I didn't have a smaller oring closest to the spacer the bolt was wobbly.

EDIT: I have an Axe!
3 turns sounds like alot to me, but like i said i dont know about the lurker bolt. But my boss bolt is made of the same stuff, try putting ure backcap at 1.5-2 turns out
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Old 11-23-2012, 10:55 AM #19
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I will do that. I'm going to continue to try with the orings I have now. I got a chrono on the way so it'll help me tune some.
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Old 11-23-2012, 03:29 PM #20
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I tried that oringmonkey paper too, and found it to be inaccurate.
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Old 11-23-2012, 06:00 PM #21
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Quote:
Originally Posted by SNAKESNIPER
I tried that oringmonkey paper too, and found it to be inaccurate.
Any suggestions on correct sizing?
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