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Re: [SCA-Archery] Need some advice and help

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  • jrosswebb1@webtv.net
    Greetings, Unfortunately, the way of finding the optimum spine weight of arrows is not as cut and dried as simply measung on a spine scale. That is what you
    Message 1 of 5 , Jan 21, 2005
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      Unfortunately, the way of finding the optimum spine weight of
      arrows is not as "cut and dried" as simply measung on a spine scale.
      That is what you do once you have found the correct arrows that shoot
      well out of your bow and you wish to make or purchase additional arrows.
      There are a lot of variables involved in getting the correct spine
      weight. When you shorten an arrow, you make it flex less, therefore, for
      all intents and purposes, you have raised the spine weight. The reverse
      is true when you leave the arrow longer. We measure the deflection of
      the shaft by placing a 2lb weight on it supported by two braces set 26"
      apart, but the reading is based on a shaft that is 28" long. (confused
      yet?) Uncut arrow shafts are sold 32" long, so if you have a 31" draw
      length and you've made up arrows that are spined at 48#, the actual
      arrows will be acting as if they are spined for 36#.
      If your draw length is 26" and you make your arrows up that length from
      shafts spined at 48#, they will act as arrows that are spined at 56#.
      The speed of your bow has a lot to do with it as well. A very fast
      bow makes the arrow bend faster on release and you may need a stiffer
      A true "period" bow with no center shot (where you are shooting
      off of your knuckle) likes a slightly under-spined arrow so that it
      won't slap as it bends around the bow.
      A heavier head on the arrow make the shaft respond as if it is
      spined lower.
      So the answer is: Go shoot a lot of different arrows out of yor
      bow spined at diffrent spine weights(within reason) and see which one
      performs the best. Then take that arrow that performs the best and
      measure it (spine weight, length, weight of tips, size and type of
      fletching, overall grain weight of arrow) write all of that information
      down and have arrows made to match those specs. Then you MAY have a good
      set of arrows for the bow. I guarantee that you will continue to tweek
      these specs as you continue shooting (your form may change, your release
      improve,etc.) and those wonderful arrows that you have won't shoot as
      Also LEARN how to straighten arrows. This is probably one of the
      most important issues an archer can learn once you've mastered the
      basics. Arrows bend and then they don't shoot well. You have to learn to
      bend them back straight otherwise you'll think your shooting has gone
      into the garbage and you won't know what you were doing wrong. After a
      period of time arrows get "tired" and have to be replaced, They get
      mushy, the spine drops and they won't shoot well even if they pass
      inspection. Pull the points off and discard the arrow, they've served
      you well.
      Good luck.
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