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Bsa Ultra Se (shot Count Issues)

Discussion in 'Technical' started by mitov08, Apr 21, 2019.

Tags:
?

Is she due a full stripping down?

  1. Yes

    4 vote(s)
    100.0%
  2. No

    0 vote(s)
    0.0%
  1. mitov08

    mitov08 Well-Known Member

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    Location:
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    Hi Guys n gals,

    Today I managed to squeeze some time in for a good ol' Plinking session. However upon firing 2 clips with a lot of random variation per shot I realized that from a 200 bar fill up I was at about 100...

    Is this normal? Doubt it is so for the techies what can I do within a very low budget.... The previous owner was a tit when it came to maintenance....

    Only modification that the rifle has received was an increase to FT/LB from 9 to 11 as I kind of want the rifle to be able to take shots at about 50 yards.


    Thanks for your advice and time!
     
  2. robs5230

    robs5230 леший

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    Location:
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    Best guess is that the rifle is suffering from valve deformation.
    You'll be wasting masses of air unless that is sorted.

    Relative easy to cure but does involve a stripdown to get to the valve
     
  3. mitov08

    mitov08 Well-Known Member

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    You could be onto something, may explain why it was on 9 ft-lb to begin with. how complicated is the process of replacing it?

    Edit: Its holding pressure without a problem. Can leave it with weeks without it dropping pressure however when it comes to taking a shot 2 mags use up 100 bar
     
    Last edited: Apr 21, 2019
  4. robs5230

    robs5230 леший

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    Location:
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    not a difficult job.
    Have a look at XTX Air website and go to the shop and then to the Huma reg for the Ultra se.
    There's instructions for fitting the reg and XTX has vids on Youtube.
    Basically bleed the cylinder empty of air totally. Follow the instructions for reg fitting and see the bit about removing the flow restrictor. The valve actually sits within that restrictor and binds.
    You can either dress the delrin / nylon part of the valve head or fit a new one (about £18). In time the new one will do exaactly the same.
    MAKE SURE YOU REFIT THE FLOW RESTRICTOR. It only gets removed when fitting a reg.

    It will need power turning back down when the valve is sorted. Your shot count will then go back up.

    Cloverleaf did a good post on here about valve deformation.
     
    SteveO likes this.

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