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Re: Where ARE the Traditional Bowyers?

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  • adrahil20601
    Ahh, thanks for the tip. I m an engineer mundanely, so that should be a great read. I ll check out the local university library and see if I can pick up that
    Message 1 of 31 , Oct 27, 2004
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      Ahh, thanks for the tip. I'm an engineer mundanely, so that should
      be a great read. I'll check out the local university library and
      see if I can pick up that journal.

      Michael

      --- In SCA-Archery@yahoogroups.com, "Al T" <abluehood@j...> wrote:
      >
      > If you can handle a little more involved math, P.E. Klopsteg has a
      > discussion and equations for this factor in his work "The Physics
      of
      > Bows and Arrows," (Am J Phys, vol 11, August 1943, pp. 175-192.
      > I believe that it was Klopsteg that coined the term "virtual mass."
      > Thus have I seen...
      > -Allan Bluehood-
      >
      > --- In SCA-Archery@yahoogroups.com, "adrahil20601" <adrahil@c...>
      > wrote:
      > >
      > > Ahhh... My suspicions were correct. As an arrow gets lighter,
      the
      > > bow's efficiency decreases. This characteristc can be described
      in
      > > terms of a bow's "virtual mass." Here's a page that goes into
      > > detail: http://homepage.ntlworld.com/joetapley/vmass.htm
      > >
      > > In short, more energy gets wasted with lighter arrows. However,
      > > this characteristic is a matter of fractions. Even a bow that
      is
      > > very affected by this is likely to lose only 10% efficiency.
      > Hardly
      > > something worth mentioning as a defining characteristic. And
      the
      > > arrows weights would have to very different. That is, this
      > > phenomenone couldn't explain the phenomenon without taking the
      mass
      > > of the arrow into primary consideration.
      > >
      > > Michael
      > >
      > >
    • adrahil20601
      Ahh, thanks for the tip. I m an engineer mundanely, so that should be a great read. I ll check out the local university library and see if I can pick up that
      Message 31 of 31 , Oct 27, 2004
      • 0 Attachment
        Ahh, thanks for the tip. I'm an engineer mundanely, so that should
        be a great read. I'll check out the local university library and
        see if I can pick up that journal.

        Michael

        --- In SCA-Archery@yahoogroups.com, "Al T" <abluehood@j...> wrote:
        >
        > If you can handle a little more involved math, P.E. Klopsteg has a
        > discussion and equations for this factor in his work "The Physics
        of
        > Bows and Arrows," (Am J Phys, vol 11, August 1943, pp. 175-192.
        > I believe that it was Klopsteg that coined the term "virtual mass."
        > Thus have I seen...
        > -Allan Bluehood-
        >
        > --- In SCA-Archery@yahoogroups.com, "adrahil20601" <adrahil@c...>
        > wrote:
        > >
        > > Ahhh... My suspicions were correct. As an arrow gets lighter,
        the
        > > bow's efficiency decreases. This characteristc can be described
        in
        > > terms of a bow's "virtual mass." Here's a page that goes into
        > > detail: http://homepage.ntlworld.com/joetapley/vmass.htm
        > >
        > > In short, more energy gets wasted with lighter arrows. However,
        > > this characteristic is a matter of fractions. Even a bow that
        is
        > > very affected by this is likely to lose only 10% efficiency.
        > Hardly
        > > something worth mentioning as a defining characteristic. And
        the
        > > arrows weights would have to very different. That is, this
        > > phenomenone couldn't explain the phenomenon without taking the
        mass
        > > of the arrow into primary consideration.
        > >
        > > Michael
        > >
        > >
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