Anyone have a better idea?

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This topic contains 2 replies, has 2 contributors, and was last updated by blackdog BlackDog 1 year, 2 months ago.

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  • June 14, 2013 at 7:01 pm #581142 Back to Top REPORT
    blackdog
    BlackDog

    Age: 63
    Joined: 7/21/2004
    Been working on a way to increase the FOC on my ACC 3-49′s. Figured out how to tap the ACC RP inserts without damage (after a few failures). Was reading somewhere on another forum (oops) that PHP insert wasn’t very uniform in weight. (any thoughts on that?) Anyhoo – Wanted to use 100 gr Phatheads and get 15-20% FOC to see how they fly. Standard insert gets about 12% according to my software. Here’s what I ended up with: image
    100 gr Phathead- BH collar- threaded rod
    and 50 gr HIT insert

    image
    Total weight as shown = 164 gr

    Would like to increase insert weight up front but can’t figure a way to do it.
    ???? Tried 2″ thread rod but it seemed to spread the weight too far back on the shaft.

    June 15, 2013 at 1:27 pm #581172 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
    View My Bows

    …Would like to increase insert weight up front but can’t figure a way to do it.
    ???? Tried 2″ thread rod but it seemed to spread the weight too far back on the shaft.

    With the i.d. of the ACC 3-49 the only practical way to do that is to go with a heavier Phathead, like the African at 190 grains or the 180-gr steel ferrule version of the 125-gr Phathead with larger cut and a PDP -49 insert for about 18% but that’s a lot of weight up front for an ACC 3-49. I’m not sure it could handle it.
    http://www.kustomkingarchery.com/Steel-Force-Phat-Head-Broadheads/productinfo/1101/

    I use PDP -49 inserts which are 8-32 threaded completely through and weigh 13.6±.1 grains. The Easton 3-49 inserts are not threaded through and the advertised weight of 8.6 grains varies from 9.2 to 9.9 grains. That might seem like a big deal, but the Phatheads will vary in weight more than the inserts, so you don’t want to get so close to the trees you lose sight of the forest, eh? {#emotions_dlg.mathews_peace}

    I prefer the PDP inserts for broadheads because they are belled out to 5/16″, whereas the Eastons are 9/32″. The PDP provides a more solid connection and compression to the Phathead.
    3-49 Inserts 001

    I think you’ve gone above and beyond on rigging up front weight for an ACC 3-49 short of milling your own weights out of lead.

    FWIW, 1/2″ of .230″ diameter lead is about 60 grains … don’t ask how I know {#emotions_dlg.mathews_whistle}

    June 15, 2013 at 9:37 pm #581221 Back to Top REPORT
    blackdog
    BlackDog

    Age: 63
    Joined: 7/21/2004
    GIarcher wrote: “I think you’ve gone above and beyond on rigging up front weight for an ACC 3-49 short of milling your own weights out of lead.

    I won’t ask how you know about lead weights LOL. Thanks for commenting on the post.
    I’ll try out the 2 ACCs as soon as I can shoot my compound again (just got the go ahead after shoulder surgery Dec 19th to ditch the weight restriction – but go in the 26th to correct the frozen shoulder issue).  Hoping the issue will be resolved.

    Be interesting to see what happens with that much weight on the front end. The SFA software shows close to 17.5 % FOC and a overly stiff shaft at 50 lbs DW for the ACC 2-49s.

    My Axis 400′s do pretty well with the 75 gr inserts and Phatheads. Think I may invest in some PDP inserts. Will make it much easier to ‘play around’

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