ASTM F1544-04
(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.
SCOPE
1.1 This specification covers the testing technique to determine the rating velocity of an archery bow.
1.2 This specification will provide only a certification of performance; that is, the velocity at which a given bow will launch an arrow of a specified weight 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 the standard. The values given in parentheses are for information only.
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.
General Information
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Standards Content (Sample)
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An American National Standard
Designation: F1544 – 04
Standard Specification for
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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 velocities of a 360-
grain (23.33-g) arrow and a 540-grain (34.99-g) arrow shot
1.1 This specification covers the testing technique to deter-
from a bow set at 60-lb (267-N) peak draw force and 30-in.
mine the rating velocities of an archery bow.
(762-mm) ATA draw length.
1.2 This specification will provide only a certification of
2.1.5 shooting machine—a device, equipped with a me-
performance, that is, the velocities at which a given bow will
chanical release, that secures a bow and releases an arrow to
launch arrows of specified weights under standard conditions.
obtain highly repeatable shooting results for various testing
1.3 This specification is not intended to provide any engi-
purposes.
neering or structural evaluation of the bow that would deter-
2.1.6 stored energy—the energy required to draw a bow
mine its fitness for the use intended, safe function, or any other
from brace height to full draw, usually expressed in foot-
attribute except as stated.
pounds (joules).
1.4 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
3. Significance and Use
information only.
3.1 This specification will be used to determine a velocity
1.5 The following safety hazards caveat pertains only to the
under standard test conditions for rating an archery bow.
test methods portion, Section 4, of this specification: This
standard does not purport to address all of the safety concerns,
4. Test Methods
if any, associated with its use. It is the responsibility of the user
4.1 Force Draw Data:
of this standard to establish appropriate safety and health
4.1.1 For bows with adjustable draw force, adjust peak or
practices and determine the applicability of regulatory limita-
maximum draw force to 60 6 1 lb (267 6 1 N). For
tions prior to use.
conventional bows and bows without let-off, the 60-lb maxi-
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2. Terminology mum draw force shall be attained or held at 28 ⁄4-in. (717-mm)
DLPP (30-in. (762-mm) ATA) draw length. The center of the
2.1 Definitions of Terms Specific to This Standard:
valley of the force-draw curve (lowest force) on compound
2.1.1 archery trade association (ATA) draw length, n—the
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bows shall be located at 28 ⁄4-in. DLPP, 6 ⁄4 in. (6 mm).
distance at the archer’s full draw from the string at the nocking
4.1.2 For bows with nonadjustable draw force, the draw
point to a vertical line through the pivot point of the bow
force shall fall between 60 and 65 lb (267 and 289 N). Adjust
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grip, +1 ⁄4 in. (44 mm).
the rating velocity mathematically to the 60-lb (267-N) level of
2.1.2 draw length pressure point (DLPP) draw length,
draw force (refer to 4.5.2). Performance of this item is not
n—the distance at the archer’s full draw from the string at the
necessary if the bows draw force needs no adjustment.
nocking point to a vertical line through the distal or pivot point
4.1.3 Measure and record the draw force at 1.00-in. (25.4-
of the bow grip.
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mm) (or less) increments from brace height to at least 28 ⁄4 in.
2.1.3 force-draw curve—the graph curve generated by re-
(717-mm) DLPP (30-in. (762-mm) ATA) draw length.
cording the draw force readings of an archery bow at 1.00- in.
4.1.4 From the force-draw curve, determine the peak or
(25.4-mm) intervals or less, from brace height through set
maximum draw force and the holding force at the standard test
weight and to the center of the valley (if present), in order to
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draw length of 28 ⁄4-in. (717-mm) DLPP (30-in. (762-mm)
reveal the energy storage characteristics of the bow.
ATA).
4.2 Test Arrows:
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4.2.1 Select the test arrows of a shaft material, size, and
This specification is under the jurisdiction ofASTM Committee F08 on Sports
Equipment and Facilities and is the direct responsibility of Subcommittee F08.16 on
stiffness to match the specified standard test peak draw force
Archery Products.
and draw length, and meet the 360-grain (23.33-g) and
Current edition approved May 1, 2004. Published May 2004. Originally
540-grain (34.99-g) weight requirement (60.5 grain (0.03 g)).
approved in 1994. Last previous edition approved in 1999 as F1544 – 99. DOI:
10.1520/F1544-04. 4.2.2 The arrows need not be fletched.
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