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Thread: Increasing the draw on a TRG conversion

  1. #1
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    Default Increasing the draw on a TRG conversion

    I have a 2011 Onza 50lb draw bow that has been converted to the conventional cable slide setup and will only peak at 45lbs. How can I get this bow back to 50lbs? The strings have been changed but I still am under the specified draw weight for this bow. I am not near a pro shop of any sort and have been doing my own bow work. I think the only way is to twist up the cables 6 turns and see if the draw weight will get back to where it should be, any expert advice would be appreciated.

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    Is the ata and bh correct?

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    Yes Spiker; all the bow spects are good and the cams are timed, just never been able to get the poundage back after changing out the trg. The bow was right at 52lbs when I got it from Martin last year.

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    If the ata and bh are the same as before - I don't see how the max Dw could change by 7lbs unless the cam rotation (not timing) was way off.

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    At full draw the string stops on the cams are both very even as they should be according to the Martin manual. Do you think equally putting a few twists in the cable might help?

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    Well yes, it will load the limbs more, bring the ata down and increase dw.Does the actual draw length of the bow match the settings on the modules?

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    I have not checked the draw length as I don't have a draw board, but have never messed with it since I got the bow at 29".

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    twisting cables will do this
    retards cams, increases dl ,increases draw wt. , decreases ata, increases brace ht.
    untwisting cables will do just the oppisite.

    twisting string
    advances cam , decreases draw length, decreases draw wt. ,decreases ata , increases brace ht.

    untwisting string will do just the oppisite

    tighting limb bolts
    advances cam, decreases draw length, increases draw wt. , increases ata, decreases brace ht.

    i printed this here on the tech forum a couple years ago!
    Last edited by bowgramp59; 01-11-2012 at 05:30 PM.
    curtis

    2010 nemesis camo, 2011 nemesis carbon fiber,
    2010 onza 3 camo,

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    i also have an onza 3 with 60 lb limbs , i also made the conversion from trg to a cable slide , best i can tell made no difference on my bow, it is very important to have your cables & strings set to factory specks, and it is best to set them to specks under 90 lbs of tention, which requires a string jig equiped with a scale. i have found that when i do it this way my cam timing , ata , brace ht, peak draw are on the money. i know everone doesn't have access to a jig, but this is the best way to do it if possible, good luck!
    curtis

    2010 nemesis camo, 2011 nemesis carbon fiber,
    2010 onza 3 camo,

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    I think you may want to do as suggested above. Having the string/cables dead on the correct spec will almost always bring the bow to where it is supposed to be.
    You can anchor one end of the string/cable on a 1/4" nail or hook then put your bow scale on the other end and use a ratchet strap to pull tension
    on it. Just be sure to put the same amount on each one, adjust them to correct length, then reinstall.
    Also be sure that when the bow is at rest the cam orientation looks like the pic on page 10 of the 2012 manual. (It is on Martins web site if you dont
    have the manual)

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