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Thread: More On Ot2

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    Respected Member Ten Point Stag archer58inPA's Avatar
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    Default More On Ot2

    I had to download ontarget2 today. My computer self destructed on Saturday. Or maybe I helped a little. But that's ANOTHER story.
    Someone at Pinwheel Software must have found that the GT500 produces much more Ke than they originally thought.
    With the new version, my CX 4560 arrows are WAY too weak. They were only VERY SLIGHTLY weak last time I checked.
    Even if I take weight of the fletching and weight off the tip , it's not what I would consider close enough.
    I've had several conversations with people here on OT2's arrow recommendations. THEY HAVE CHANGED.
    I need to buy new arrows......I haven't told my wife yet.

    So I put together a small chart to reference with the newer spine numbers for the GT500.


    ------27---- 28--- 29--- 30 DL's
    60lbs .4308 .4104 .3906 .3715
    65lbs .3919 .3750 .3584 .3423
    70lbs .3595 .3452 .3312 .3173

    Now, go buy new arrows......It'll be a good excuse.
    Last edited by archer58inPA; 02-11-2009 at 01:26 AM.
    2014 E32
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  2. #2
    Senior Member Eight Point
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    Default

    Quote Originally Posted by archer58inPA View Post
    I had to download ontarget2 today. My computer self destructed on Saturday. Or maybe I helped a little. But that's ANOTHER story.
    Someone at Pinwheel Software must have found that the GT500 produces much more Ke than they originally thought.
    With the new version, my CX 4560 arrows are WAY too weak. They were only VERY SLIGHTLY weak last time I checked.
    Even if I take weight of the fletching and weight off the tip , it's not what I would consider close enough.
    I've had several conversations with people here on OT2's arrow recommendations. THEY HAVE CHANGED.
    I need to buy new arrows......I haven't told my wife yet.

    So I put together a small chart to reference with the newer spine numbers for the GT500.


    ------27---- 28--- 29--- 30 DL's
    60lbs .4308 .4104 .3906 .3715
    65lbs .3919 .3750 .3584 .3423
    70lbs .3595 .3452 .3312 .3173

    Now, go buy new arrows......It'll be a good excuse.
    Please be so kind to do the math for me if you would, I'm tired right now and feeling a might lazy. I've just purchased a dozen VForceHV350V1 they have a spine of .35 @31. If I were to move up to 65# cutting these arrows to 29.25" it seems that I would be alright spine wise but maybe a little light weight wise?

  3. #3
    Respected Member Ten Point Stag archer58inPA's Avatar
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    Quote Originally Posted by bowhunter View Post
    Please be so kind to do the math for me if you would, I'm tired right now and feeling a might lazy. I've just purchased a dozen VForceHV350V1 they have a spine of .35 @31. If I were to move up to 65# cutting these arrows to 29.25" it seems that I would be alright spine wise but maybe a little light weight wise?
    The spine for your setup is .3242.
    The 350's are very weak. 300's are what you should have.
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    "If it ain't broke , I can MAKE it better".
    Integrity is doing the right thing when no one is looking.

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    Respected Member Ten Point Stag archer58inPA's Avatar
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    I should also recommend that when looking at the chart , you round the #'s up or down to the nearest 100. That will get you in the ball park.
    The spine #'s seem to depend on arrow length to a degree.
    2014 E32
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    "If it ain't broke , I can MAKE it better".
    Integrity is doing the right thing when no one is looking.

  5. #5
    Senior Member Eight Point
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    Default Spine

    Quote Originally Posted by archer58inPA View Post
    The spine for your setup is .3242.
    The 350's are very weak. 300's are what you should have.
    Are you saying that at 65# they would be weak, or my present 60#.

  6. #6
    Respected Member Ten Point Stag archer58inPA's Avatar
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    Quote Originally Posted by bowhunter View Post
    Are you saying that at 65# they would be weak, or my present 60#.
    At 65 they are weak. 60 would be o.k.
    2014 E32
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    "If it ain't broke , I can MAKE it better".
    Integrity is doing the right thing when no one is looking.

  7. #7
    Respected Member Ten Point Stag DustyRx's Avatar
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    I have had the same experience. It now says that my Maxima 250's, 27", 100gr tip are way too weak for my Z at 65lbs.

    I hope they don't all of the sudden start flying erratic now.

  8. #8
    Respected Member Ten Point Stag archer58inPA's Avatar
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    Quote Originally Posted by Duster View Post
    I hope they don't all of the sudden start flying erratic now.
    Don't tell your arrows, they won't find out.!!!!!!!! LOL!!!!!!!!!!
    2014 E32
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    "If it ain't broke , I can MAKE it better".
    Integrity is doing the right thing when no one is looking.

  9. #9
    Senior Member Six Point GRZIP's Avatar
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    I found that my GT500 at 60lbs and 30 inch draw shot my 27.5 inch Maxima 250s with a wrap, unibushings, and a G nock poorly. It definately shoots the Maxima 350s better.

  10. #10
    Respected Member Ten Point Stag archer58inPA's Avatar
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    lonehara is going to verify the results with Pinwheel.
    The changes seem aweful drastic, we just want to be sure.
    2014 E32
    2011 PULSE AP
    TUNER OF BOWS BY LONG DISTANCE
    Member of the JURY MEMBER OF THE LEFTY BROTHERHOOD




    "If it ain't broke , I can MAKE it better".
    Integrity is doing the right thing when no one is looking.

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