ASTM F1889-98e1
(Guide)Standard Guide for Straightness Measurement of Arrow Shafts
Standard Guide for Straightness Measurement of Arrow Shafts
SCOPE
1.1 This guide covers the formulation and designation of straightness measurement standards and nomenclature for arrow shafts.
1.2 This guide is designed to provide manufacturers and consumers a means for measuring the straightness of arrow shafts with tools and devices available in the archery industry and sport.
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
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An American National Standard
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Designation: F 1889 – 98
Standard Guide for
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Straightness Measurement of Arrow Shafts
This standard is issued under the fixed designation F 1889; 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 (e) indicates an editorial change since the last revision or reapproval.
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e NOTE—Introduction editorially updated in September 2003.
INTRODUCTION
Arrow shaft straightness is a desired characteristic. Unfortunately, straightness is currently
measured using varying methods at varying span lengths. The archery industry, as well as consumers,
have recognized that it is difficult to compare measurements at these various spans using different
measurement methods.
This guide proposes the use of a fixed span distance, for all but a few very short shafts, instead of
using various spans based on various manufactured shaft lengths. The span length of 28 in. was
selected based on typical manufactured shaft lengths, as well as other ATA/ASTM industry standards.
Using this arrow shaft straightness guide will benefit consumers as well as the archery industry.
1. Scope 4. Measurement Guidelines for Arrow Shaft Straightness
1.1 This guide covers the formulation and designation of 4.1 Straightness Measurement—The most prevalent and
straightness measurement standards and nomenclature for commonly accepted method of measuring arrow shaft straight-
arrow shafts. ness involves supporting the arrow shaft along a known, fixed
1.2 This guide is designed to provide manufacturers and span, and using an indicator device while the arrow shaft is
consumers a means for measuring the straightness of arrow rotated about its axis on wheels or bearings. For this guide, a
shafts with tools and devices available in the archery industry span type measurement is to be used. The length of the arrow
and sport. shaft to be tested, the span distance to be used, and the
1.3 The values stated in inch-pound units are to be regarded equipment to be used are defined as follows:
as the standard. The SI units given in parentheses are for 4.1.1 Shaft Length—The shaft length to be used for straight-
information only. ness measurement is the actual manufactured shaft length of
each arrow shaft size/type.
2. Terminology
4.1.2 Span Distance—The length of the span to be used for
2.1 Definitions of Terms Specific to This Standard: this test is 28 in. (0.711 m) with a length tolerance of 60.125
2.1.1 arrow straightness, n—the conformance of the mate-
in. (3.2 mm). For those shafts, which are manufactured 29 in.
rial or load axis of an arrow shaft to the true linear, longitudinal in length or less, the span distance to be used is 25 in. (0.635
axis of the shaft.
m) and adjusted to an equivalent 28 in. reading using the
2.1.2 standard total indicator reading (TIR), n—total indi- formula:
cator reading of arrow shaft straightness obtained through
28-in. straightness value = 25-in. straightness value 3 283/253
methods outlined in this guide.
For example:
straightness at 25 in. = 0.0030 in.
3. Significance and Use
straightness at 28 in. = 0.0030 in. 3 283/253
3.1 The measurement system presented in this guide is
where 283/253 = 1.4049,
intended to ensure uniform arrow shaft straightness measure-
straightness at 28 in. = 0.0030 in. 3 1.4049 = 0.0042 in.
ment standards to avoid confusion of the consumer, which
4.1.3 Measurement Location—Arrow shafts shall be mea-
results from the use of different straightness measurement
sured for straightness at the center of the span. The tolerance
systems.
for the measurement location shall be equal to or better than
60.250 in. (6.35 mm).
4.1.4 Measurement Equipment—Measurements shall be
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This guide is under the jurisdiction of ASTM Committee F08 on Sports
taken with a noncontact laser type optical measurement device.
Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
Archery Products.
Current edition approved June 10, 1998. Published February 1999.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F1889–98
4.1.5 Support Wheels—Support wheels must feature low- 5. Product Marking and Specification Disclosure
friction bearings and exhibit a positive crown in order to limit
5.1 Straightness measurements commonly are presented in
the contact area with the arrow shaft.
two ways including a plus-minus (6) reading, as well as total
4.1.6 Test Description—The arrow shafts shall be rotated
indicator reading (TIR). The method of measurement shall be
about its longitudinal axis while being measured for straight-
clearly defined wit
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