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Old 11-27-2011, 08:55 PM #1
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LurkerPB Eigenring Thread

Compatibility - All matrices DM and PM up to 08 model year (Not Rail and SLG). All PMs without internal milling. DM9 through DM11 version is here and awaiting o-rings to be added to the site.

Old Thread: http://www.pbnation.com/showthread.php?t=3494592

How it works: http://ogrestrength.com/EigenringMusings.pdf

Manual: http://www.lurkerpb.com/manuals/dmmanual.pdf

FAQ:

Quote:
Q:Is this just Lurker's version of a "Top Hat mod"?
A: No! The Eigenring moves along the length of the top hat, so the benefits of a low pressure and high efficiency are realized. The size of the dump chamber changes during the shot, resultsing in the most efficient use of air possible.

Quote:
Q: Does the Eigenring use a spring?
A: No. The Eigenring works on airflow restriction to dynamically create a pressure difference to drive it's motion. While early versions utilized a spring, we discovered it was more efficient to forego it and simply space the ring out with the 3 included o-rings.

Quote:
Q: Does this change my bolt position?
A: Due to the thin spacer provided, the bolt tip does move very minorly forward in the breech. In most cases this is a positive change resulting in less rollback and gentler operation. However, if any issues are identified with the install relating to bolt position, simply add an o-ring around the outer diameter behind the large threads on the back cap. This will prevent the engine from moving too far forward. Additionally, check the bumper sail o-rings, as the bolt may progress too far if they are worn or the LPR is at a high setting.

Quote:
Q: Are these compatible with polished/TechT/Billy Wing bolts?
A: Billy wing and polished stock bolts will work synergistically with the Eigenring due to their ability to lower dwell from the decreased friction. I recommend a polished stock bolt for cost efficiency. Techt bolts with the top hat cut outs will not work, but the ones with a smooth top hat will.

Testimonials:
http://www.pbnation.com/showthread.p...8#post69365138
http://www.pbnation.com/showthread.p...3#post69902153
http://www.pbnation.com/showthread.p...6#post70195816
http://www.pbnation.com/showthread.p...6#post70138426
http://www.pbnation.com/showthread.p...8#post70127038
http://www.pbnation.com/showthread.p...3#post70118503
http://www.pbnation.com/showthread.p...1#post70094341

Note that the efficiency from a 68/45 often approaches 1800-2000 shots!

DM9+ Install vid

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Last edited by Lurker27 : 05-02-2012 at 12:59 PM.
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Old 11-27-2011, 10:32 PM #2
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AHHHH need DM9 rings now!!!
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Old 11-29-2011, 02:45 AM #3
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Yerp, ready to get my eigenring for a dm11!
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Old 11-29-2011, 04:15 AM #4
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Just wondering? In step two under the section of Tuning for your ring, it says to turn out your LPR until gun cycles "inconsistently". Is that a typo? Should it be "consistently". Just wondering, thanks.
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Old 11-29-2011, 09:39 AM #5
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I tihnk it's worded right - you're trying to see how low you can go before the gun DOESN'T like it, in order to get the lowest possible setting.
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Old 11-29-2011, 04:33 PM #6
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hey were to order it??
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Old 11-29-2011, 08:34 PM #7
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Old 11-29-2011, 09:39 PM #8
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Definitely interested in the DM9+ rings

Edit: After looking at all the vids I will be ordering one for my DM10 as soon as they are available.
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Old 11-29-2011, 09:51 PM #9
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Quote:
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LoL a want to order Some barrels and Shocker bolt too
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Old 11-29-2011, 09:57 PM #10
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Hey Lurker, I was just wondering. When you turn out the LPR on the DM, you would be increasing your pressure to the LPR, therefor your consistency should increase not decrease as stated in your guide. Should it be written that your LPR be turned in until inconsistency develops,not out like it is currently written? I hope my confusion is explained to your understanding, I don't want to bother you and if I am mistaken, sorry in advance. really looking forward to your DM9 ring. Not sure if you remember me, but I have been patiently waiting from the very beginning. I knew you would be able to figure something out, you are a great engineer, thanks for your time.
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Old 11-29-2011, 10:29 PM #11
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Old 11-29-2011, 10:54 PM #12
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Quote:
Originally Posted by Lurker27 View Post
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Don't see the DM9 rings on the site?
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Old 12-01-2011, 05:43 PM #13
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So to take advantage of the ring is it crucial to use the lowest dwell possible? I was tuning it earlier according to your directions but I prefer the way my DM7 shot on 21ms, will I still have gains in efficiency over stock?
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Old 12-01-2011, 06:08 PM #14
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^^^^

I was wondering the same thing. I LOVE how my PM7 shoots with longish dwell, it's so quiet, smooth, efficient and gentle on paint I'm not inclined to reduce my dwell.

Can anyone speak from experience? I'd imagine that to some degree we would see the same benefit due to the reduced dump chamber volume and the concept behind the ring (maintaining dump chamber pressure longer as it empties) but I'm curious to what degree.
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Old 12-01-2011, 08:28 PM #15
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Quote:
Originally Posted by slowimpreza View Post
So to take advantage of the ring is it crucial to use the lowest dwell possible? I was tuning it earlier according to your directions but I prefer the way my DM7 shot on 21ms, will I still have gains in efficiency over stock?
http://www.pbnation.com/showthread.p...8#post69365138

check out the links in his original post. some very useful info.
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Old 12-02-2011, 01:46 AM #16
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Your link isn't working Jams.
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Old 12-02-2011, 04:57 AM #17
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Quote:
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Your link isn't working Jams.
its the top testimonials link in Lurkers original post. In the videos in the link he leaves the dwell and LPR alone.
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Old 12-05-2011, 06:38 PM #18
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whats the word on DM9 rings?
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Old 12-05-2011, 07:13 PM #19
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Any chance of one for a dm12?
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Old 12-05-2011, 08:17 PM #20
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whats the word on DM9 rings?
i need my eginring!!!
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Old 12-07-2011, 10:48 AM #21
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Hey Lurker The Eigenring will be for sale in your page this week?
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