impact regulator

Forums PCP Airguns impact regulator

  • Views : 593
  • Link

    zvezdan
    Participant
    Member

     

    one question:

    huma regulator gen3 in  impact x .25

    gauge botlle presure on impact 240 bar— regulator on 106 bar

    gauge botlle presure after some shots on 210 bar—regulator presure go to  104 bar

    gauge botle presure  after more shots on 170 bar—regulator presure go to  102 bar

    gauge botlle presure after more shots on 130 bar—regulator presure go to 100 bar !!!

    from 240 bar till 130 bar presure in bootle ,presure in  regulator go down for 6 bar

    what to check??

    i was measure with electronic gauge

    Link

    Airgun-hobbyist
    Participant
    Member

    It seems there is too much pressure on the stack of spring washers at first, then as pressure drops a so does plenum pressure because the springs have less resistance.  I think the regulator needs cleaned and washers lightly greased, and, if it is possible, maybe install one less belville washer so spring pressure is less to see if that fixes pressure stability.

    Link

    tor47
    Participant
    Member

    I would check if the velocity stays the same with a chronograph.

    Link

    zvezdan
    Participant
    Member

    aha, so 11 instead of 12 springs , clean and greased

    some o-ring?

    Link

    zvezdan
    Participant
    Member

    tor47

    I would check if the velocity stays the same with a chronograph.

    velocity go down for some

    Link

    tor47
    Participant
    Member

    I would also check that the bottle gauge is reading correct pressure. When it shows 130 bar, is that correct? Othervise  if you believe you have 130 bar left, you could actually be shooting lower than the regpressure. At some point the regpressure and the digital gauge should read the same, if the bottle gauge is correct. It is not uncommon the bottle gauge can read 20-30 bar to high. You can try to bleed of more air (be carefull to shoot the gun below 100 bar) to like 80-70 bar on the reg, and check what the bottle gauge read. If it still is 20-30 bar higher, I would guess the bottle gauge is not correct. You can also use the gauge on the fill kit to compare the one on the bottle gauge. Just shut off the air suply when filling and check if the bottle gauge read close to the fillkit.

    Link

    tor47
    Participant
    Member

    Also if you have recently adjusted the reg, it might need some more shots to get more stable. I know from adjusting the AMP reg on my wildcat down to 115 bar, it slowly got a litle lower to 112-113 over time. But after some hundreds shots it is settled there, and it usually stays within 2 bars pressure difference from a max fill, down to the reg setpoint. I use an edgun digital gauge permanently attached to my wildcat reading the reg pressure, so it should be a pretty accurate reading.

    Link

    tor47
    Participant
    Member

    zvezdan

    tor47

    I would check if the velocity stays the same with a chronograph.

    velocity go down for some

    I would still check the gauges first. And if you have recently adjusted the reg before you started measuring it, I would shoot it some more, to see if it gets more stable by itself. I am not an expert but 2-3 bar drop might be acceptable and normal.

    Link

    zvezdan
    Participant
    Member

    i am check my  huma gauge is ok

    i am shoting two times from 240 bar till 120-130 and check one time with electronic gauge, second time with huma gauges on regulator and both times regulator presure go down for 6-7 bar,  shooting about 75 pelets both times , 

    velocity go down from 925 till 895 fps  from 240 till 130 bars

    • This reply was modified 1 month ago by zvezdan.
    Link

    tor47
    Participant
    Member

    Well I think it is beyond my knowledge then.

    Link

    zvezdan
    Participant
    Member

    tor47

    Well I think it is beyond my knowledge then.

    thank you anyway i hope someone already recognized same problem

    • This reply was modified 1 month ago by zvezdan.
    Link

    Airgun-hobbyist
    Participant
    Member

    Alternatively, instead of experimenting to fix it, contact Huma with the problem and they should be able to instruct you on the fix.  

    Link

    Airmanator
    Participant
    Member

    I don't get the question. So you fill to 240 bar. Shoot till it's down to 130 bar. And from all that pressure, you lose 6 bar on the reg? 6 bar isnt that much imo to make sure a big deal out of it. Lots of these gauges will be off few bars. Especially these small gauges. In the real world nothing is exactly perfect. 6 bar loss from 240 bar to 130 bar is nothing. I let my impact sit overnight and it creep like 10 bars. Sometime more. I don't think 6 bar loss will make much difference.

    Link

    Bob_O
    Participant
    Member

    Title should be changed to Huma regulator.

    Maybe it just needs more use to settle in.

     

     

    Link

    zvezdan
    Participant
    Member

    digital gauge is ok and all gauges is check 

    velocity go down with every 10 -15 shots, 6-7 bar is not small  if is regulator presure 106 bar

    • This reply was modified 1 month ago by zvezdan.
    Link

    leadfoot
    Participant
    Member

    Just a thought here… maybe 100 BAR is at the lowest "working" pressure of that reg. In a perfect world you could have a sensor that could detect exactly 106 BAR and then close the reg., however with just a stack of tensioned springs a few BAR in itself is pretty good.

    If I was shooting long range precision I might be concerned. Does this loss of pressure noticeably affect your shooting? Is the POI of 10 shot groups from a challenged distance, say 70 yards any different as the reg pressure goes down from 106 to 100?

    Link

    tor47
    Participant
    Member

    Maybe you have the high pressure version of the huma reg? 

    Link

    Mikepr
    Participant
    Member

    I had the same issue with Walther RM8
    Every 10 shots the speed went down about 10 fps

    The problem was LEAK from high to low pressure side
    Higher bar, higher reg pressure
    the problem was just  small oring,not damaged but bad quality
    Changed it and the guns spread is 5 fps from 230-90 bar
     

    Link

    zvezdan
    Participant
    Member

    so

    i am put another huma regulator(i was buy two) and same, exsactly same–when presure from botle go down-in same time with every shot presure in regulator go down for 01-0-2 bar(sometimes more)

    also my friend with same impact and same huma reg inside him  make  same test like my with electronic gauge and   result is same, so 3 huma regulators show same results—with every shot presure in regulator go down for 0.1-0.2 bar–sometimes more than 0.2 bar

    then i am put back my fx regulator–and repeat all proces

    result is : from 230 bar till 120 bar   diferent in bar is 1-2 bar in regulator, my friend pani sd  also make that like my and his result is total same—diferent in regulator presure is 1-2 bar

    i am buy huma reg just if i need to shoot with regulator presure over 150 bar-stupid choice

    why stupid? becouse we are make tonight with diferent arrange position of springs presure that what we want, if we want with fx regulator more than 150 bar  we can do that   without losing bars during shooting

    thank you everyone on help and sorry for my bad english  but big thanks  and here always can find help

    regards from south europe from montenegro

    • This reply was modified 1 month ago by zvezdan.
    Link

    leadfoot
    Participant
    Member

    Best of Luck! Your English is fine. It's always nice to hear from our friends overseas and appreciate how airgun shooting is enjoyed around the world.

Viewing 20 posts - 1 through 20 (of 28 total)

You must be logged in to reply to this topic.