ASTM F1436-07
(Guide)Standard Guide for Center Serving Diameter Dimensions for Archery Bow Strings
Standard Guide for Center Serving Diameter Dimensions for Archery Bow Strings
SIGNIFICANCE AND USE
This guide is not meant to be all inclusive since there are, and will continue to be, special circumstances that will dictate the use of nonconforming dimensions. These special circumstances and the requirements that they establish cannot be totally anticipated and therefore must be treated individually.
These guidelines are based on an analysis of presently used materials for the manufacture of bow strings and the strength requirements dictated by archery bows falling within a draw weight range of 0 to 100 lb (0 to 444.8 N).
These guidelines also address the desirability of proper fit of the arrow nock to the center serving.
SCOPE
1.1 This guide covers the formulation of preliminary guidelines for the outside diameter dimensions of the center servings for the shooting strings for archery bows.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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An American National Standard
Designation:F1436–07
Standard Guide for
Center Serving Diameter Dimensions for Archery Bow
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Strings
This standard is issued under the fixed designation F1436; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope theabrasivewearofrepeatedshotsandalsotoprovideaproper
fit with the slot of the nock.
1.1 This guide covers the formulation of preliminary guide-
2.1.4 draw weight of the bow, n—peak or maximum force
lines for the outside diameter dimensions of the center servings
required to draw the bow string of a bow from its position at
for the shooting strings for archery bows.
rest (brace height) to the full draw position.
1.2 The values stated in inch-pound units are to be regarded
2.1.5 nock, n—slot, or a special fitting that contains a slot,
as the standard. The values given in parentheses are for
that is positioned at the rear end of an arrow to engage the bow
information only.
string.
2. Terminology
2.1.5.1 Discussion—The slot maintains secure contact with
the bow string while the bow is being drawn, and also during
2.1 Definitions of Terms Specific to This Standard:
the release of the string and the return of the string to its
2.1.1 bow string, n—special multi-strand cord that spans an
original position before being drawn.
archery bow from end to end and is used to engage the rear end
2.1.6 string groove width or slot throat dimension,
of an arrow in order to launch it into flight.
n—narrowest portion of the slot opening in the nock, usually
2.1.2 bow string material, n—strands of various materials,
located near the open end of the slot.
both natural and synthetic, from which bow strings are made.
2.1.7 string hole size, n—dimension at the bottom or base of
2.1.2.1 Discussion—Most bow strings today are manufac-
the nock slot.
tured from synthetic materials that have superior strength and
2.1.7.1 Discussion—This is the area where the bow string
resistance to wear and atmospheric conditions. Difference in
sits when it is seated in the slot.
the tensile strength of the materials is responsible for a
difference in the size and number of the strands in a bowstring.
3. Significance and Use
In addition, difference in the force necessary to draw various
3.1 This guide is not meant to be all inclusive since there
bows may dictate varying numbers of strands of a given
are, and will continue to be, special circumstances that will
material to provide adequate strength for satisfactory service.
dictate the use of nonconforming dimensions. These special
The material used for wrapping to create a center serving is
circumstances and the requirements that they establish cannot
available in several sizes or diameters. This, combined with
be totally anticipated and therefore must be treated individu-
variation in the number of strands used to make the main
ally.
string, permits adjustment of the outside diameter of the center
3.2 These guidelines are based on an analysis of presently
serving within reasonable limits so that standardization is
used materials for the manufacture of bow strings and the
practical.
strength requirements dictated by archery bows falling within
2.1.3 center serving, n—wrapping of twisted or braided
a draw weight range of 0 to 100 lb (0 to 444.8 N).
line, or monofilament material, that is placed on the bow string
3.3 These guidelines also address the desirability of proper
near its center.
fit of the arrow nock to the center serving.
2.1.3.1 Discussion—This wrapping covers the area where
thenockofthearrowengagesthebowstring.Itisusedtoresist
4. Fit of the Nock on the Center Serving
4.1 Preferable Fit—While there are some instances where
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the practice is not followed, the majority of archers prefer that
This guide is under the jurisdiction of ASTM Committee F08 on Sports
Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
the nock of the arrow be retained on the bow string with a
Archery Products.
slight “snap-fit.” This is mandatory when the archer uses a
Current edition approved Oct. 1, 2007. Published November 2007. Originally
mechanical device to hook onto the string to draw the bow, and
approved in 1992. Last previous edition approved in 2002 as F1436 – 02. DOI:
10.1520/F1436-07. to aid in releasing the string to launch the arrow. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F1436–07
alternative technique allows only the use of the fingers to draw 4.3 Importance of Controlling Center Serving Dia
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