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Thread: ATA,how long is too long?

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    Default ATA,how long is too long?

    Going over my Pantera today,the ATA is an 1/8" too long which ain't too bad I guess.but it got me to thinking,what is too long?and what do you add twists to? The string or the cable or both? Thanks Dale
    2012 Pantera Magnum 70#
    Oneida Strike Eagle 60-80#

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    Super Moderator Arrow Splitter's Avatar
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    Up to about a 1/4" for ATA. I personally wouldn't allow mine to be a 1/4" off, but that's me. When twisting, I believe it is a 4 to 1 ratio. Four twists in the cable(s) and one in the string.

    A.S
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    Thanks A.S. Does it make a difference if it's a single cam or dual cams? As far as the 4to1 ratio is concerned,My Pantera is the Fury XT single cam
    2012 Pantera Magnum 70#
    Oneida Strike Eagle 60-80#

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    Super Moderator Arrow Splitter's Avatar
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    Quote Originally Posted by Dale817 View Post
    Thanks A.S. Does it make a difference if it's a single cam or dual cams? As far as the 4to1 ratio is concerned,My Pantera is the Fury XT single cam
    No. On a hybrid you definitely have to twist the cables equally, or your cam timing will be off.

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    Administrator bfisher's Avatar
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    Here's something you can do prior to any twisting. If a right handed bow, if the draw length and draw weight is as you like it, draw two lines on the left side of the cam where it passes through the limb fork; both if it's a dual cam. Add about 5 twists to each cable and check your lines. Twisting the cables will make the draw length a little longer. If necessary add some twists to the string and then check the A2A measurement. Work back and forth with this till you get the desired results. When you're done check the A2A and draw weight. It wouldn't hurt to measure the draw length prior and after if you have a draw board. You can also use the draw board to check cam synch, too.

    I just did this with a Razor's Edge yesterday and to reduce the A2A 1/4" it took 10 twists in each cable, but I also didn't twist the string as I was trying to increase the draw weight. Twisting just the cables raises draw weight while twisting the string decreases it.
    Last edited by bfisher; 05-17-2013 at 08:50 AM.
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  6. #6
    Sonny Thomas
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    Default ATA,how long is too long?

    What I look for is the bow making listed max draw weight. At one time the industry standard was said to me (another company) that +/- 3/8" was a given tolerance. I have yet to find a bow that much off.

    Max draw weight present, I'd do like Barry noted. Sort of give and take process, but it works.

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