ASTM F1889-05
(Guide)Standard Guide for Straightness Measurement of Arrow Shafts
Standard Guide for Straightness Measurement of Arrow Shafts
ABSTRACT
This guide covers the measurement guidelines for arrow shaft straightness and is intended to provide a standard means of measuring straightness using a fixed span distance by employing tools and devices available in the archery industry. The arrow shafts shall be measured for straightness using a span type measurement technique, where the measurements shall be taken at the center of the span by a noncontact laser type optical measurement device. The accuracy of the measurement shall depend on the consistency of roundness of the arrow shafts. However, in the case where the arrow shaft is not round, additional measurement devices shall be considered to ensure the accuracy of measurement. The straightness measurement values shall be represented by total indicator readings.
SIGNIFICANCE AND USE
The measurement system presented in this guide is intended to ensure uniform arrow shaft straightness measurement standards to avoid confusion of the consumer, which results from the use of different straightness measurement systems.
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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation:F1889–05
Standard Guide for
1
Straightness Measurement of Arrow Shafts
This standard is issued under the fixed designation F1889; 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.
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 otherATA/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 that are manufactured less than
rial or load axis of an arrow shaft to the true linear, longitudinal
29 in. in length, the span distance to be used is 25 in. (63.5 cm)
axis of the shaft. and adjusted to an equivalent 28 in. reading using the approxi-
2.1.2 standard total indicator reading (TIR), n—total indi-
mate conversion formula:
cator reading of arrow shaft straightness obtained through Approximate Conversion Formula:
methods outlined in this guide.
28-in. straightness value = 25-in. straightness value 3 28/25
For example:
3. Significance and Use
straightness at 25 in. = 0.0030 in.
3.1 The measurement system presented in this guide is
straightness at 28 in. = 0.0030 in. 3 28/25
intended to ensure uniform arrow shaft straightness measure-
where 28/25 = 1.12,
ment standards to avoid confusion of the consumer, which
straightness at 28 in. = 0.0030 in. 3 1.12 = 0.0034 in.
results from the use of different straightness measurement
4.1.3 Measurement Location—Arrow shafts shall be mea-
systems.
sured for straightness at the center of the span. The tolerance
for the measurement location shall be equal to or better than
1 60.250 in. (6.35 mm).
This guide is under the jurisdiction of ASTM Committee F08 on Sports
4.1.4 Measurement Equipment—Measurements shall be
Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
Archery Products.
taken with a noncontact laser type optical measurement device.
Current edition approved Oct. 1, 2005. Published October 2005. Originally
approved in 1998. Last previous edition approved in 2004 as F1889 – 98 (2004).
DOI: 10.1520/F1889-05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F1889–05
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 shal
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