ASTM F1544-09
(Specification)Standard Specification for Determining the Rating Velocities of an Archery Bow
Standard Specification for Determining the Rating Velocities of an Archery Bow
ABSTRACT
This specification covers the testing technique to determine the rating velocities of an archery bow. Among the test methods are: force draw data, and the shooting test. The test arrow description and the test data correction are also detailed. This specification is not intended to provide any engineering or structural evaluation of the bow that would determine its fitness for the use intended, safe function, or any other attribute except as mentioned.
SIGNIFICANCE AND USE
This specification will be used to determine a velocity under standard test conditions for rating an archery bow.
SCOPE
1.1 This specification covers the testing technique to determine the rating velocities of a compound bow.
1.2 This specification will provide only a certification of performance, that is, the velocities at which a given bow will launch arrows of specified weights under standard conditions.
1.3 This specification is not intended to provide any engineering or structural evaluation of the bow that would determine its fitness for the use intended, safe function, or any other attribute except as stated.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 The following safety hazards caveat pertains only to the test methods portion, Section 4, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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An American National Standard
Designation: F1544 – 09
Standard Specification for
1
Determining the Rating Velocities of an Archery Bow
This standard is issued under the fixed designation F1544; 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 2.1.4 rating velocities, n—the initial velocity of an arrow
weighing 5 grains per pound (0.073 g/N) of the bow’s Peak
1.1 This specification covers the testing technique to deter-
Draw Force (60.5 grains on total arrow weight) (60.073g)
mine the rating velocities of a compound bow.
1
from a bow set at no more than 70 6 ⁄2 lb (311.4 N) Peak
1.2 This specification will provide only a certification of
Draw Force and 30 in. (762 mm) ATA actual draw length.
performance, that is, the velocities at which a given bow will
Example: a 70-lb Peak Draw Force bow requires the use of a
launch arrows of specified weights under standard conditions.
350 grain arrow (60.5 grains on total arrow weight)
1.3 This specification is not intended to provide any engi-
(60.073g). A minimum of (5) shots for each test must be
neering or structural evaluation of the bow that would deter-
performed. Test shot velocities will then be averaged to
mine its fitness for the use intended, safe function, or any other
determine the ATA Compound Bow Rating Velocity.
attribute except as stated.
2.1.5 shooting machine—a device, equipped with a me-
1.4 The values stated in inch-pound units are to be regarded
chanical release, that secures a bow and releases an arrow to
as standard. The values given in parentheses are mathematical
obtain highly repeatable shooting results for various testing
conversions to SI units that are provided for information only
purposes.
and are not considered standard.
2.1.6 stored energy—the energy required to draw a bow
1.5 The following safety hazards caveat pertains only to the
from brace height to full draw, usually expressed in foot-
test methods portion, Section 4, of this specification: This
pounds (joules).
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user
3. Significance and Use
of this standard to establish appropriate safety and health
3.1 This specification will be used to determine a velocity
practices and determine the applicability of regulatory limita-
under standard test conditions for rating an archery bow.
tions prior to use.
4. Test Methods
2. Terminology
4.1 Force Draw Data:
2.1 Definitions of Terms Specific to This Standard:
4.1.1 For bows with adjustable draw force, adjust peak or
2.1.1 archery trade association (ATA) draw length, n—the
1
maximum draw force to no more than 70 6 ⁄2 lb (311.4 6 1
distance at the archer’s full draw from the string at the nocking
N). The center of the valley of the force-draw curve (lowest
point to a vertical line through the pivot point of the bow grip
force) attained after having passed through the peak or maxi-
3 1
1 ⁄4 in. (+ ⁄4 in., –0 in.) (44 + 6.4 – 0 mm).
1
mum draw force shall be located at 28 ⁄4-in. (717.6 mm) DLPP,
2.1.2 draw length pressure point (DLPP) draw length,
1
+ ⁄4 –0 in. (6 mm).
n—the distance at the archer’s full draw from the string at the
4.1.2 If the bow’s draw force cannot be adjusted to 70 6 0.1
nocking point to a vertical line through the distal or pivot point
lb (311.4 N) and an appropriate weight arrow cannot be
of the bow grip.
obtained, the test can be performed with a 350 6 0.5 grain
2.1.3 force-draw curve—the graph curve generated by re-
(22.75 6 0.03 g) arrow and the rating velocity can be adjusted
cording the draw force readings of an archery bow at 1.0-in.
mathematically to the 70 lb (311.4 N) level of draw force (refer
(25.4-mm) intervals or less, from brace height through set
to 4.5.2).
weight and to the center of the valley (if present), in order to
4.1.3 Measure and record the draw force at 1.0-in. (25.4-
reveal the energy storage characteristics of the bow.
1
mm) (or less) increments from brace height to at least 28 ⁄4-in.
(717-mm) DLPP (30-in. (762-mm) ATA) draw length.
1
This specification is under the jurisdiction ofASTM Committee F08 on Sports
4.1.4 From the force-draw curve (obtained in 4.1.3), deter-
Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
mine the peak or maximum draw force that occurs between the
Archery Products.
1
brace position of the bow and the full draw length of 28 ⁄4-in.
Current edition approved Dec. 1, 2009. Published January 2010. Originally
approved in 1994. Last previous edition approved in 2004 as F1544 – 04. DOI:
(717-mm) DLPP (30-in. (76
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:F1544–04 Designation: F1544 – 09
Standard Specification for
1
Determining the Rating Velocities of an Archery Bow
This standard is issued under the fixed designation F1544; 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
1.1 This specification covers the testing technique to determine the rating velocities of an archerya compound bow.
1.2 This specification will provide only a certification of performance, that is, the velocities at which a given bow will launch
arrows of specified weights under standard conditions.
1.3 This specification is not intended to provide any engineering or structural evaluation of the bow that would determine its
fitness for the use intended, safe function, or any other attribute except as stated.
1.4The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.5 The following safety hazards caveat pertains only to the test methods portion, Section 4, of this specification: This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Terminology
2.1 Definitions of Terms Specific to This Standard:
2.1.1 archery trade association (ATA) draw length, n—the distance at the archer’s full draw from the string at the nocking point
3 1
to a vertical line through the pivot point of the bow grip,+1grip 1 ⁄4 in. (+ ⁄4 in., –0 in.) (44 + 6.4 – 0 mm).
2.1.2 draw length pressure point (DLPP) draw length, n—the distance at the archer’s full draw from the string at the nocking
point to a vertical line through the distal or pivot point of the bow grip.
2.1.3 force-draw curve—the graph curve generated by recording the draw force readings of an archery bow at 1.00- in. 1.0-in.
(25.4-mm) intervals or less, from brace height through set weight and to the center of the valley (if present), in order to reveal the
energy storage characteristics of the bow.
2.1.4 rating velocities, n—the initial velocities of a 360-grain (23.33-g) arrow and a 540-grain (34.99-g) arrow shot from a bow
set at 60-lb (267-N) peak draw force and 30-in. (762-mm) ATA draw length. —the initial velocity of an arrow weighing 5 grains
per pound (0.073 g/N) of the bow’s Peak Draw Force (60.5 grains on total arrow weight) (60.073g) from a bow set at no more
1
than 70 6 ⁄2 lb (311.4 N) Peak Draw Force and 30 in. (762 mm)ATAactual draw length. Example: a 70-lb Peak Draw Force bow
requires the use of a 350 grain arrow (60.5 grains on total arrow weight) (60.073g). A minimum of (5) shots for each test must
be performed. Test shot velocities will then be averaged to determine the ATA Compound Bow Rating Velocity.
2.1.5 shooting machine—a device, equipped with a mechanical release, that secures a bow and releases an arrow to obtain
highly repeatable shooting results for various testing purposes.
2.1.6 stored energy—the energy required to draw a bow from brace height to full draw, usually expressed in foot-pounds
(joules).
3. Significance and Use
3.1 This specification will be used to determine a velocity under standard test conditions for rating an archery bow.
4. Test Methods
4.1 Force Draw Data:
4.1.1For bows with adjustable draw force, adjust peak or maximum draw force to 60 6 1 lb (267 6 1 N). For conventional bows
1
and bows without let-off, the 60-lb maximum draw force shall be attained or held at 28 ⁄4-in. (717-mm) DLPP (30-in. (762-mm)
1
This specification is under the jurisdiction of ASTM Committee F08 on Sports Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
Archery Products.
Current edition approved MayDec. 1, 2004.2009. Published May 2004.January 2010. Originally approved in 1994. Last previous edition approved in 19992004 as
F1544–99.F1544 – 04. DOI: 10.1520/F1544-049.
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