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Thread: Plunger button contact 140mm from nock

  1. #1
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    Plunger button contact 140mm from nock

    Can any one help please?
    I am resetting a new limb riser combo and am having issues of excessive button contact starting about 140mm out from the nock resulting in abrasion marks to wrap and shaft just before the wrap.

    Arrow spine is correct according to charts and tuning .

    Has anyone any ideas why I am getting contact so far back in the shaft and rather hard? I assume it is linked to centreshot .. I thought I had it correct but it seems not ?

    Limbs are border hex 6.5H BH 7 1/2" which is optimum according the Border 38# otf and long limbs.

    Thanks for any assistance

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    It's an X Rik's Avatar
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    How light is the button set? It should really be medium to stiff...
    Ever tried? Ever failed?
    Try again. Fail again. Fail better! - Beckett

    The marksman who hesitates is lost. Just take it for granted that you are going to hit and fire away before you have time to doubt the certainty of success. - Annie Oakley, 1894.

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    assybish (27-09-18)

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    It is fairly light - Beiter weak spring most of the way IN ie nearer the riser = stiffer. I was advised to use weakest spring as if centreshot was correct the plunger was doing very little

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    It's an X jerryRTD's Avatar
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    I used to get a light touch, just enough to make a small scratch on my 2315's in the place you describe when I shot my Oneida compound .I increased the peak draw weight reset my center shot.
    The arrow is coming off the bow slightly tail right a stiff reaction. You need to set the centre shot as per the Easton tuning guide and bare shaft tune your bow. The charts have been known to be wrong. As for the button not doing much I don't believe that. If that were true no one would fit buttons.
    just point,pull & click the mouse button

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    assybish (27-09-18)

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    In the Gold I've taken part in an AIUK Ironman Shoot.
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    If the spring is too weak then your shaft might be grinding on the barrel of the plunger.

    Hex's seem to work better with stiff springs and very little or no (or even negative) centre shot

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    assybish (27-09-18)

  9. #6
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    Thanks will try ... I have as near zero centre shot as my eyes allow ... will go up in spring stiffness ...It surprised me as I thought once the tip of the arrow was past the button the shaft was in zero contact until the nock left the string but clearly in my case this ain't so as the shaft is unmarked until just before the wrap when it gets "ground" hard in a straight line until just short of the nock

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