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Edgun Matator - Spike When Off Regulator

Discussion in 'Technical' started by redboat01, Jan 2, 2021.

  1. redboat01

    redboat01 Engaging Member

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    Hoping somone can help me with some advice please? :)

    I have recently bought an Edgun Matador R5M (not from the UK), but a 16 Joule version i.e. under 12 ft/lb. Put it through the Chrono as soon as it arrived, and got 10.5 ft/lb: all well and good. Then, having seen some of the comments for the Leshiy about power spikes as they came off regulator, considering it was the same manufacturer, I thought I would check mine.

    Sure enough, as it came off regulator, the FPE went up a lot. As an interim measure, I have now adjusted it right down to 4 ft/lb (on regulator) to ensure it stays within the limit when it comes off. I had assumed that the revised regulator that Ed had put in would deal with this particular issue. It would seem not.

    I've seem a few conflicting comments around this e.g. port flow restrictors, adjustments to the regulator to 80 bar etc:

    https://www.airgunforum.co.uk/commu...s/sat-in-a-carpark.278059/page-3#post-2409323

    Can anyone let me know if they have gone through this process and managed to remove (or reduce to a reasonable level) the post regulator spike?

    I dont want to leave a .22 rifle at 4 ft/lb for the long term... :( Any advice would be much appreciated.
     
  2. 2506sendero

    2506sendero Legend in his own mind & living on the edge.

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    redboat01 and Herbie87 like this.
  3. redboat01

    redboat01 Engaging Member

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    Thanks, that may be the solution. Still hoping that someone else with an R5M who has resolved the issue may be able to confirm? I know the Ed had changed the regulator, so it might just be that it needs adjusting to 80 Bar. Or... it might be that it requires a restrictor or a new hammer spring... Would be good to know what will fix it...
     
    2506sendero likes this.
  4. Jimmypie

    Jimmypie Pffft , Pop , Twang , Bang

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    I would first try backing the reg down to about 60bar then slowly bring the hammer spring tension up and see where you end up .
     
    32:1, redboat01 and 2506sendero like this.
  5. redboat01

    redboat01 Engaging Member

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    Thanks @Jimmypie, did you see this issue with your Matador?
     
  6. Jimmypie

    Jimmypie Pffft , Pop , Twang , Bang

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    I dont own a matador but have had a couple of Lelyas , that’s just where I would start , 60bar , then 70bar if low power .
     
    redboat01 likes this.
  7. Leshiy

    Leshiy No 0352

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    What pressure were you at in the tank when starts coming off the reg ?
    Unless you have a reg tester it’s all guestimation work
     
    redboat01 likes this.
  8. redboat01

    redboat01 Engaging Member

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    Round about 120 Bar. If you want more detail, I've put the shot string FPS into a spreadsheet along with Bar readings every 10 shots..

    No, I dont have a reg tester at the moment...
     
  9. jps norton

    jps norton One Hit Wonder

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    The huma tuning reg kit comes with softer springs and a plenum insert to reduce the air volume so that everything works together.
    I have Huma kit to put into my Lelya (recent purchase) but haven't had the chance to test and chrono the original reg / set up as it comes off reg.
     
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  10. jps norton

    jps norton One Hit Wonder

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    The factory reg is set at 125 ish bar i believe so it sounds like its still on its factory setting if you're spiking around 120 bar
     
    redboat01 likes this.
  11. redboat01

    redboat01 Engaging Member

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    I think apart from length and stock differences, technically they are the same rifle. If you saw the same issue and adjusting the regulator fixed it, then that would be good news.
     
  12. 32:1

    32:1 Yea, I like it

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    To much reg pressure, just do as Jim says and enjoy the tinkering

    Chris
     
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  13. redboat01

    redboat01 Engaging Member

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    Already on the case :) IMG_20210102_181644[1].jpg
     
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  14. 2506sendero

    2506sendero Legend in his own mind & living on the edge.

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    You would be surprised if i told you how many exotic foreign holidays and cases of beer my gunsmith has had off the back of my tinkering, i've had some extremely bad days at the office with allen keys & torx wrenches :facepalm: :D
    Fortunately my most recent foray into fitting a HUMA reg went exactly to plan :cool: :thumb:
     
    dylan and 32:1 like this.
  15. redboat01

    redboat01 Engaging Member

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    Regulator now removed. Looks like Ed has now put markings on it to help with adjustments

    IMG_20210102_183703[1].jpg IMG_20210102_183709[1].jpg
     
  16. redboat01

    redboat01 Engaging Member

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    And, '125' written on the side. So, I think that would indicate it has been set to 125 Bar
     
  17. Lon'gun

    Lon'gun Dedicated EDhead©

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    https://www.huma-air.com/Edgun-Lelya-2.0-12-ft/lbs-Tuning-Regulator-Set-By-Huma-Air
    This is the huma reg kit that you need for the R5M.
    Set to 60bar for .22.
    If a restrictor has been fitted in the transfer port it needs to come out or you'll not achieve anywhere near 12fpe

    https://www.airgunforum.co.uk/community/index.php?threads/r5m-tinkering.299323/#post-2777557
    and a follow up
    https://www.airgunforum.co.uk/commu...-count-until-i-got-bored.305439/#post-2870490
    I'm still running this configuration.
     
  18. redboat01

    redboat01 Engaging Member

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    Comparing the regulator size, it looks like this is the 'new' R5M regulator, based on this youtube video from Ed:



    Ed mentions in this that this new regulator should be looked at carefully first, before replacing it with a Huma regulator...
     
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  19. Leshiy

    Leshiy No 0352

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    I’m sure There’s some decent videos on YouTube regarding adjustment without reg tester

    never shoot mine below 150bar as a rule as it’s purely for vermin use usually nip back to the pickup for a top up out the 3L cylinder

    did purchase a Huma reg just never got round to fitting yet as I’m finding the original edgun reg set at 120bar very consistent at present

    keep us updated on your results :thumb:
     
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  20. redboat01

    redboat01 Engaging Member

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    It looks like this regulator is adjustable like the Huma. In the same video, Ed mentions that the regulator can be adjusted with a hex key, where a full turn is 60 bar. This is consistent with the labelling on my photo.

    On that basis, if it is at 125 Bar now, then I think as a first stop I will go to 80 bar, as that was the highest recommendation I had seen. So, a reduction of 45 Bar. This will mean a 270 degree turn clockwise.
     
    Leshiy and 2506sendero like this.

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