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Gracoil tension adjustment

Discussion in 'Shooting Related Threads' started by Steve W, Oct 8, 2012.

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  1. Steve W

    Steve W Well-Known Member

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    I noticed one of my Gracoil will bottom out during recoil, I read an old thread about how to adjust tension on Gracoil, but I couldn't remove the rear plate by unscrewing the set screw showing in picture, and I couldn't see the adjusting Allen screw. Am I doing something wrong? TIA.


    [​IMG]
     
  2. CalvinMD

    CalvinMD Well-Known Member

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    You might have a ridge built up around where the set screw dug in....you can take apart a spring loaded clothespin and orient them with some grease on the wood between the plates and tap them in with a small hammer ..tapping above and below the center shaft alternating sides and that should "walk it off"
     
  3. Steve W

    Steve W Well-Known Member

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    Thank you Calvin, for your help, I tried to "Pull" the rear plate off a little, it moved 1/16".

    But now this is what I see:

    The "Rod" with it's ring moving away from the rear plate:
    [​IMG]


    Where's the adjusting Allen screw? The center hole is not an Allen screw, and it's too shallow to insert any wrench
    [​IMG]


    Thank you again.
     
  4. yakimaman

    yakimaman Well-Known Member

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    Did you think about calling Gracoil?
     
  5. yakimaman

    yakimaman Well-Known Member

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    GRACOIL USE INSTRUCTIONS

    It is important for the Gracoil to be adjusted to the shooter, not the load or shell size. When adjusted to the individual, the recoil will activate the Gracoil and it will respond to protect the shooter.
    Not all shooters mount or hold a gun with the same pressure to the shoulder and face. If the tension is set too light there will be more gun motion than necessary, and it could compress enough to pinch the shooter. When the tension is set too heavy, more recoil is felt. The tension should be set tight enough that the unit will not completely close, or “bottom out”.

    Setting the Tension

    Open the unit using a 3/32 allen wrench, insert it into the hole on the right side and loosen the set screw 2 turns, then pull the plate off exposing the center shaft. Using the same allen wrench, insert it in the hole in the shaft and turn as the arrow indicates, towards the lightest setting and replace the pad plate.
    Mount the gun as if you are about to call for a target. If the unit starts to compress, it is set too light, so remove the pad plate again and turn the center shaft 1 turn towards “Heavy”, replace the pad plate and mount the gun. Repeat this process until the unit does not compress. Do not go past this point more than ¼ turn. It is now set on the “breakover edge”, any amount of recoil will activate the Gracoil, giving quick response with a short stroke, and absorbing a greater amount of recoil for a softer shot.

    Pad Plate Adjustment

    The Gracoil pad plate is guided and runs on 4 teflon liners for smooth motion and lifetime wear, a small amount of oil on the guide pins occasionally will help keep it running smoothly. To adjust the pad plate for the shooter’s comfort, remove the recoil pad using the 3/32 allen wrench, then use the 1/8 allen wrench to loosen the 2 screws holding the cam locks. Both screws have a series of 6 holes for adjustment, simply move the plate to suit your comfort and retighten.

    Length of Pull Adjustments

    If you have a GC15LP Gracoil with length of pull adjustment, use a 7/64 allen wrench to loosen the 2 screws on the right side of the stock plate, then turn the center shaft to your desired stock length and retighten.
     
  6. Steve W

    Steve W Well-Known Member

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    Thank you yakimaman, for your explanation, I was reading your post from an old thread I found on TS before I started to wonder if my Gracoil had the same rear plate.

    It seems my Gracoil's rear plate (for adjustable pad attachment) does not cover the "rod", the "rod" can be seen through the hole on the rear plate, and it doesn't have an adjustment allen screw in it. See picture.


    [​IMG]


    Have you ever seen this kind of "rod"? TIA.
     
  7. yakimaman

    yakimaman Well-Known Member

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    Your best bet is to call Gracoil and ask them what you have here. They're very helpful and you'll get the right answers from the people who make the unit.

    rm
     
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