Measuring Draw Weight

Home Forums Archery Tech Forum Measuring Draw Weight

This topic contains 5 replies, has 5 contributors, and was last updated by  Burky 1 year, 4 months ago.

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • December 6, 2012 at 5:58 am #497106 Back to Top REPORT

    Burky

    Joined: 1/20/2010
    Disclaimer: I searched before asking this question. If I missed the thread sorry, just post the link for me.

    Reason I’m asking – my 2011 Z7 is perfectly paper tuned and all measurements and timing are right on the money, but I’m only getting 67lbs when limbs are maxed out when I zero the scale with bow hanging from the scale.

    This is the second string and is a factory replacement. I only shoot 64/65lbs so this is not a deal breaker. I’m just dieing to know how the factory measures draw weight.

    So, when measuring draw weight (using a digital scale hanging from the overhead) do you zero/tare the scale (with the bow hanging on the scale) then measure weight or, do you include the weight of the bow?

    If you include the weight of the bow then it’s perfect – if you don’t, I’m left scratching my head.

    Thanks.

    cb

    December 6, 2012 at 10:59 am #543100 Back to Top REPORT
    straightedge123
    StraightEdge123

    Joined: 10/22/2007
    I don’t ever remember hearing anyone use the weight of the bow for a tare. You are the first but I’m not going to say that’s wrong. Using an overhead scale and a hand held bow scale for my own bow gives me the same results. I’m not sure how the scale is going to distinguish between the weight of the bow and the schmuck pulling down on it.

    :p j/k

    Add a couple twists in your cable and check your poundage. Will over rotate your cam but bump up your weight.

    [=}=]

    Mathews S2 / Copper John 4-pin / QAD HD LD / Worlds Best Strings / 808 Bowslings / Easton Bloodlines
    December 6, 2012 at 2:59 pm #543101 Back to Top REPORT
    newdxt
    NEWDXT

    Joined: 5/27/2008

    Disclaimer: I searched before asking this question. If I missed the thread sorry, just post the link for me.

    Reason I’m asking – my 2011 Z7 is perfectly paper tuned and all measurements and timing are right on the money, but I’m only getting 67lbs when limbs are maxed out when I zero the scale with bow hanging from the scale.

    This is the second string and is a factory replacement. I only shoot 64/65lbs so this is not a deal breaker. I’m just dieing to know how the factory measures draw weight.

    So, when measuring draw weight (using a digital scale hanging from the overhead) do you zero/tare the scale (with the bow hanging on the scale) then measure weight or, do you include the weight of the bow?

    If you include the weight of the bow then it’s perfect – if you don’t, I’m left scratching my head.

    Thanks.

    cb[/quote:3ko5qpl1]

    You don’t zero/tare the scale with the weight of the bow. You are measuring force not weight. Once you start pulling down on the bow, the weight of the bow is irrelevant. If you attached the scale to a wall/column and pulled the bow away horizontally, would you deduct the bow weight? If you got 67 lbs after deducting the bow weight, your draw weight is about 71 lbs.

    December 6, 2012 at 3:57 pm #543102 Back to Top REPORT

    yotebuster1200

    Joined: 9/23/2009

    Disclaimer: I searched before asking this question. If I missed the thread sorry, just post the link for me.

    Reason I’m asking – my 2011 Z7 is perfectly paper tuned and all measurements and timing are right on the money, but I’m only getting 67lbs when limbs are maxed out when I zero the scale with bow hanging from the scale.

    This is the second string and is a factory replacement. I only shoot 64/65lbs so this is not a deal breaker. I’m just dieing to know how the factory measures draw weight.

    So, when measuring draw weight (using a digital scale hanging from the overhead) do you zero/tare the scale (with the bow hanging on the scale) then measure weight or, do you include the weight of the bow?

    If you include the weight of the bow then it’s perfect – if you don’t, I’m left scratching my head.

    Thanks.

    cb[/quote:2xx1zp78]

    You don’t zero/tare the scale with the weight of the bow. You are measuring force not weight. Once you start pulling down on the bow, the weight of the bow is irrelevant. If you attached the scale to a wall/column and pulled the bow away horizontally, would you deduct the bow weight? If you got 67 lbs after deducting the bow weight, your draw weight is about 71 lbs.[/quote:2xx1zp78] :agree

    December 6, 2012 at 4:06 pm #543103 Back to Top REPORT
    l-o-s-t-arrow
    L.O.S.T.Arrow

    Joined: 5/16/2006
    Location: Alberta
    :whistle Sides my HeliM is so light you would gain draw weight :^O

    Neil

    December 7, 2012 at 9:26 am #543104 Back to Top REPORT

    Burky

    Joined: 1/20/2010
    Thanks for the input.
Viewing 6 posts - 1 through 6 (of 6 total)