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Thread: Archery Calculators

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  1. #1
    Senior Member droppixel's Avatar
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    Default Archery Calculators

    http://www.stickemarchery.com/sticke...lculators.aspx

    Anyone know if the "field test" for speed is close to an accurate assessment to give you a ballpark figure?

    Stickem has some really nice tools there, just wondering how accurate some of those assessments can be. I don't have all the tools to be able to measure everything exactly, but if something like this is close that would be able to leave me with an idea of what the bows are doing.
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    Senior Member wscywabbit's Avatar
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    Well, the auto calculator is pretty close if I put in my true draw length and not my AMO draw... I'll have to shoot some groups at 20 and 40 to see how close the field test chart is. I'll try and do that tonight or tomorrow.
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  3. #3
    Senior Member droppixel's Avatar
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    Yeah I don't know how much I would trust that. I shot with my Bengal and with my Alien tonight

    Bengal (65# peak measured at the factory - bottomed out): 11.25" drop

    Alien (70# turned out 1.5 turns): 8.25" drop

    ==

    While I don't know exactly what the bows are shooting, if I punch numbers into the calculator with a guess at weight on the string, I get around 290/300 respectively for the 2 bows. According to the field test 300fps would be about a 15.5" drop and 290 would be somewhere in between the 15.5 and 17.7"

    --

    I'm not obsessed with the speed, just curious to know for my own education.
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    Super Moderator bfisher's Avatar
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    Ihave used these calculators several times since the year 2000, when I shot for Pearson. Back then I did the shoot 20 & 40 chart.The one day I was havin a very good day of shooting(sub2" groups at 40)were about 16" lower than those at 20 yards. Using the chart that would calculate to about 294-295. The bow in question chrono'd 264 on three different chronographs.

    This leads me to believe one of two things. Either the calculators are designed to make us feel good (ego thing) or the bows IBO ratings are greatly inflated. I'm inclined to think it's a bit of both.
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  5. #5
    Senior Member droppixel's Avatar
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    I just need to put it up with the real technology and test it on a chrono. Gander Mtn near me has/had one ... heard someone shot it recently so I highly doubt it is still operational after that. A buddy had one but he moved to MI before I could check it out. I might revisit the thread on AT where the guy did a DIY coil chrono and built some software for it and tested it against his shop chrono.

    Forgot to mention, I should have avoided doing this in the first place. There is a reason I don't shoot groups anymore if at all possible. Blew up an arrow. Had one come down right on another and break it off towards the tip of the shaft in the target.
    Last edited by droppixel; 05-16-2012 at 09:10 PM.
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  6. #6
    String builder/ Super Moderator Hutch~n~Son Archery's Avatar
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    This is the word that explains it.







    BENGAL NUFF SAID!!!!!!

    Hutch


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