GC2 MkII: locking the power adjuster

Discussion in 'General Airgun Chat' started by JerryD, May 26, 2014.

  1. JerryD

    JerryD Member

    Joined:
    May 13, 2009
    Messages:
    299
    Location:
    Rutland (it's titchy!)
    Club:
    Hereward FT&ARC
    Can any GC2 gurus help please?

    I was checking my GC2 MkII today: lovely and consistent at 720fps, so I tweaked the power up a bit. Went up to 785 - great! That's where I'd set it previously.

    However, I noted that the adjuster screw was still turning easily after tightening up the two grubscrews on the charging plunger, and that after a few shots the power was already dropping back a bit.

    Should there be a second grubscrew to lock the power adjuster in place, as per a Ripley, or is there a different way of adjusting it? Does the power adjuster always turn freely like that?

    Any thoughts/ideas/advice? I'd like to get it up 'n running, but consistent with it.



    .
     
  2. ian furness

    ian furness Member

    Joined:
    Jun 3, 2013
    Messages:
    26
    Location:
    west yorkshire
    Club:
    emley moor
    hi love a propper gun. get in touch with steve hebby he knows lots about them. mine is a mark 3 but i dont mess incase i bugger it up.
     
  3. holly

    holly Well-Known Member

    Joined:
    Nov 8, 2008
    Messages:
    2,849
    Location:
    ISLE OF WIGHT
    Club:
    carisbrooke rangers
    ME

    Myself i never undo the two allen bolts . just turn the allen key . never had a problem yet . it will i find drop down after setting a small amount . IE 5 or 6 feet per sec . but then should stay where it is . there are no locking plugs like the 100 series . the only thing i use the small allen bolts for are to put an allen key in , so when i turn the power adjusting allen key , it does not just go around and around . if any problems , send it to SCR Stafforshire Custom Rifles . had both of mine serviced there and perfect ??? HOLLY:)
     

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