## Re: Spine weight of footed shafts?

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• If the FOC is not changed, it shouldn t need to be. Most of the flex of the arrow is towards the center of the shaft. If you re shooting arrows with a
Message 1 of 4 , Sep 3, 2008
If the FOC is not changed, it shouldn't need to be. Most of the flex
of the arrow is towards the center of the shaft.

If you're shooting arrows with a hardwood foreshaft that is denser
than your shafting material, you may need a slightly stiffer spine, or
a lighter tip. If you're shooting with a hardwood insert as a nock
reinforcer, it is less critical. Of course, all the calculations for
shaft spine are approximations, and should be tested on the range
before making up a batch of highly matched arrows.

Logan
--- In SCA-Archery@yahoogroups.com, "Kean Gryffyth" <kad.dsl@...>
wrote:
>
> I've got a question about using footed shafts:
>
> If a bow with a draw weight of X usually uses shafts spined at Y to
X,
> what, if any, adjustment should be made when using a footed shaft?
> Should the spine be adjusted up? down? not a all?
>
> -Kean
>
• I think the FOC will change in this case. Its like adding a heavier weight to the front of the arrow, weakening the spine. You can either reduce the weight of
Message 2 of 4 , Sep 4, 2008
I think the FOC will change in this case. Its like adding a heavier
weight to the front of the arrow, weakening the spine. You can either
reduce the weight of the tip, or make the arrow shorter.

Unfortunately that still does not address the problem of the actual
grain weight of the arrow, which will now be heavier unless you
reduced the weight of the tip enough to balance that out.

--- In SCA-Archery@yahoogroups.com, "logantheboweyder"
<logantheboweyder@...> wrote:
>
> If the FOC is not changed, it shouldn't need to be. Most of the
flex
> of the arrow is towards the center of the shaft.
>
> If you're shooting arrows with a hardwood foreshaft that is denser
> than your shafting material, you may need a slightly stiffer spine,
or
> a lighter tip. If you're shooting with a hardwood insert as a nock
> reinforcer, it is less critical. Of course, all the calculations
for
> shaft spine are approximations, and should be tested on the range
> before making up a batch of highly matched arrows.
>
> Logan
> --- In SCA-Archery@yahoogroups.com, "Kean Gryffyth" <kad.dsl@>
> wrote:
> >
> > I've got a question about using footed shafts:
> >
> > If a bow with a draw weight of X usually uses shafts spined at Y
to
> X,
> > what, if any, adjustment should be made when using a footed shaft?
> > Should the spine be adjusted up? down? not a all?
> >
> > -Kean
> >
>
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