ASTM F1889-05(2010)
(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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F1889 − 05(Reapproved 2010) An American National Standard
Standard Guide for
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 ment standards to avoid confusion of the consumer, which
results from the use of different straightness measurement
1.1 This guide covers the formulation and designation of
systems.
straightness measurement standards and nomenclature for
arrow shafts.
4. Measurement Guidelines for Arrow Shaft Straightness
1.2 This guide is designed to provide manufacturers and
4.1 Straightness Measurement—The most prevalent and
consumers a means for measuring the straightness of arrow
commonly accepted method of measuring arrow shaft straight-
shafts with tools and devices available in the archery industry
ness involves supporting the arrow shaft along a known, fixed
and sport.
span, and using an indicator device while the arrow shaft is
1.3 The values stated in inch-pound units are to be regarded
rotated about its axis on wheels or bearings. For this guide, a
as the standard. The SI units given in parentheses are for
span type measurement is to be used. The length of the arrow
information only.
shaft to be tested, the span distance to be used, and the
equipment to be used are defined as follows:
2. Terminology
4.1.1 Shaft Length—The shaft length to be used for straight-
ness measurement is the actual manufactured shaft length of
2.1 Definitions of Terms Specific to This Standard:
each arrow shaft size/type.
2.1.1 arrow straightness, n—the conformance of the mate-
4.1.2 Span Distance—The length of the span to be used for
rialorloadaxisofanarrowshafttothetruelinear,longitudinal
this test is 28 in. (0.711 m) with a length tolerance of 60.125
axis of the shaft.
in. (3.2 mm). For those shafts that are manufactured less than
2.1.2 standard total indicator reading (TIR), n—total indi-
29 in. in length, the span distance to be used is 25 in. (63.5 cm)
cator reading of arrow shaft straightness obtained through
and adjusted to an equivalent 28 in. reading using the approxi-
methods outlined in this guide.
mate conversion formula:
Approximate Conversion Formula:
3. Significance and Use
28-in. straightness value = 25-in. straightness value × 28/25
3.1 The measurement system presented in this guide is
For example:
intended to ensure uniform arrow shaft straightness measure-
straightness at 25 in. = 0.0030 in.
straightness at 28 in. = 0.0030 in. × 28/25
where 28/25 = 1.12,
straightness at 28 in. = 0.0030 in. × 1.12 = 0.0034 in.
This guide is under the jurisdiction of ASTM Committee F08 on Sports
EquipmentandFacilitiesandisthedirectresponsibilityofSubcommitteeF08.16on
4.1.3
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