ASTM F1952-10

Standard Specification for Helmets Used for Downhill Mountain Bicycle Racing

ABSTRACT
This specification covers performance requirements for helmets used by downhill mountain bicycle riders. Studies have shown higher risk to the head and face for this sport as compared to recreational street riding; hence, this specification requires greater impact protection and provides performance criteria for chin bars on full-face helmets, but does not require full-face helmets. Retention system tests shall be performed before impact testing. The helmet can be impacted anywhere on or above the test line with the curbstone anvil in any horizontal orientation. The ambient test helmet shall be subjected to the chin bar impact test.
SCOPE
1.1 This specification covers performance requirements for helmets used by downhill mountain bicycle riders. Studies have shown higher risk to the head and face for this sport as compared to recreational street riding; hence, this specification requires greater impact protection and provides performance criteria for chin bars on full-face helmets, but does not require full-face helmets. This specification recognizes the desirability of lightweight construction and ventilation; however, it is a performance specification and is not intended to restrict design.
1.2 All testing and requirements of this specification shall be in accordance with Test Methods F1446, except where noted herein.
1.3 Partial utilization of this standard is prohibited. Any statement of compliance with this specification must be a certification that the product meets all of the requirements of this specification in its entirety. A product that fails to meet any one of the requirements of this specification is considered to have failed this standard, and should not be sold with any indication that it meets parts of this standard.
1.4 Headgear designed to comply with this and other standards may proclaim uses as certified by the manufacturer.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 The following safety caveat applies to the chemical, mechanical, or physical, or a combination thereof, test methods described herein and is meant specifically for those performing the tests (in an effort to provide them with notice to take the appropriate precautions when conducting the tests): 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

• Status: Historical
• Publication Date: 31-Jul-2010
• ICS: 13.340.20 - Head protective equipment
• Technical Committee: F08 - Sports Equipment, Playing Surfaces, and Facilities
• Drafting Committee: F08.53 - Headgear and Helmets

Relations

• Replaces: ASTM F1952-09 - Standard Specification for Helmets Used for Downhill Mountain Bicycle Racing
• Effective Date: 01-Aug-2010
• Referred By: ASTM F3175-16 - Standard Guide for Training and Equipping Search and Rescue Personnel Operating on Mountain Bikes (Mountain Bike SAR Endorsement)
• Effective Date: 01-Aug-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F1952 −10 AnAmerican National Standard
Standard Specification for
1
Helmets Used for Downhill Mountain Bicycle Racing
This standard is issued under the fixed designation F1952; 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. Referenced Documents
2
1.1 This specification covers performance requirements for 2.1 ASTM Standards:
helmets used by downhill mountain bicycle riders. Studies F1446 Test Methods for Equipment and Procedures Used in
Evaluating the Performance Characteristics of Protective
have shown higher risk to the head and face for this sport as
compared to recreational street riding; hence, this specification Headgear
requires greater impact protection and provides performance
criteria for chin bars on full-face helmets, but does not require 3. Labels and Warnings
full-face helmets. This specification recognizes the desirability
3.1 Shall meet the requirements of Test Methods F1446.
of lightweight construction and ventilation; however, it is a
3.2 Shall have the words “For downhill mountain bicycle
performance specification and is not intended to restrict design.
racing.”
1.2 All testing and requirements of this specification shall
beinaccordancewithTestMethodsF1446,exceptwherenoted
4. Marking the Test Line
herein.
4.1 The test line is shown in Fig. 1 and shall be marked in
1.3 Partial utilization of this standard is prohibited. Any
accordance with Test Methods F1446.
statement of compliance with this specification must be a
certification that the product meets all of the requirements of
5. Conditioning and Number of Samples
this specification in its entirety. A product that fails to meet any
5.1 Conditioning of the samples to be tested shall be in
one of the requirements of this specification is considered to
accordance with the section entitled “Conditioning Environ-
have failed this standard, and should not be sold with any
ments” in Test Methods F1446.
indication that it meets parts of this standard.
5.2 For helmets with a chin bar, five sample helmets are
1.4 Headgear designed to comply with this and other
required for each shell-liner size combination.
standards may proclaim uses as certified by the manufacturer.
5.3 For helmets without a chin bar, four sample helmets are
1.5 The values stated in SI units are to be regarded as
required for each shell-liner size combination.
standard. No other units of measurement are included in this
standard.
6. Retention System Testing
1.6 The following safety caveat applies to the chemical,
6.1 Retention system tests shall be performed before impact
mechanical, or physical, or a combination thereof, test methods
testing.
described herein and is meant specifically for those performing
the tests (in an effort to provide them with notice to take the 6.2 The ambient helmet shall be subjected to the positional
appropriate precautions when conducting the tests): This stan- stability (roll-off) test in accordance with Test Methods F1446
using a 4-kg drop mass from a height of 0.6 m.
dard does not purport to address all of the safety concerns, if
any, associated with its use. It is the responsibility of the user
6.3 The hot, cold, and wet helmets shall be subjected to the
of this standard to establish appropriate safety and health
dynamic strength retention test in accordance with Test Meth-
practices and determine the applicability of regulatory limita-
ods F1446 using a 4-kg drop mass from a height of 0.6 m.
tions prior to use.
6.4 The retention system shall remain intact without elon-
gating more than 30 mm.
1
This specification is under the jurisdiction ofASTM Committee F08 on Sports
Equipment and Facilitiesand is the direct responsibility of Subcommittee F08.53 on
2
Headgear and Helmets. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Aug. 1, 2010. Published September 2010. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1999. Last previous edition approved in 2009 as F1952 – 09. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/F1952-10. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F1952−10
HEADFORM DIMENSION
SIZE X L/2 Y R S T U
A 24.0 88.0 89.7 47.5 23.0 142.0 84.0
E 26.0 94.5 96.0 49.0 24.0 151.0 88.0
J 27.5 101.0 102.5 50.5 25.0 160.0 92.0
M 29.0 106.0 107.0 52.0 27.0 166.0 96.0
O 30.0 108.5 110.0 53.0 27.0 170.0 97.0
FIG. 1Marking the Test Line
7. Im
...

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:F 1952–00 Designation: F1952 – 10
Standard Specification for
1
Helmets Used for Downhill Mountain Bicycle Racing
This standard is issued under the fixed designation F1952; 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 performance requirements for helmets used by downhill mountain bicycle riders. Studies have
shown higher risk to the head and face for this sport as compared to recreational street riding; hence, this specification requires
greater impact protection and provides performance criteria for chin bars on full-face helmets, but does not require full-face
helmets. This specification recognizes the desirability of lightweight construction and ventilation; however, it is a performance
specification and is not intended to restrict design.
1.2 All testing and requirements of this specification shall be in accordance with Test Methods F 1466F1446, except where
noted herein.
1.3 Partial utilization of this standard is prohibited. Any statement of compliance with this specification must be a certification
that the product meets all of the requirements of this specification in its entirety. A product that fails to meet any one of the
requirements of this specification is considered to have failed this standard, and should not be sold with any indication that it meets
parts of this standard.
1.4 Headgear designed to comply with this and other standards may proclaim uses as certified by the manufacturer.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 The following safety caveat applies to the chemical, mechanical, or physical, or a combination thereof, test methods
described herein and is meant specifically for those performing the tests (in an effort to provide them with notice to take the
appropriate precautions when conducting the tests): 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. Referenced Documents
2
2.1 ASTM Standards:
F1446 Test Methods for Equipment and Procedures Used in Evaluating the Performance Characteristics of Protective Headgear
2.2 Other Standards:
1995 Standard For Protective HeadgearFor Use with Motorcycles and Other Automotive Vehicles Section C4. Chin Bar Test
3. Labels and Warnings
3.1 Shall meet the requirements of Test Methods F 1446. F1446.
3.2 Shall have the words “For downhill mountain bicycle racing.”
4. Marking the Test Line
4.1 The test line is shown in Fig. 1 and shall be marked in accordance with Test Methods F 1446F1446.
5. Conditioning and Number of Samples
5.1Shall be in accordance with Test Methods F 1446F1446
5.1 Conditioning of the samples to be tested shall be in accordance with the section entitled “Conditioning Environments” in
Test Methods F1446.
5.2 For helmets with a chin bar, five sample helmets are required for each shell-liner size combination.
5.3 For helmets without a chin bar, four sample helmets are required for each shell-liner size combination.
1
This specification is under the jurisdiction of ASTM Committee F08 on Sports Equipment and Facilities and is the direct responsibility of Subcommittee F08.53 on
Headgear and Helmets.
Current edition approved June 10, 2000. Published August 2000. Originally issued as F 1952–99. Last previous edition F 1952–99.
Current edition approved Aug. 1, 2010. Published September 2010. Originally approved in 1999. Last previous edition approved in 2009 as F1952 – 09. DOI:
10.1520/F1952-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F1952 – 10
HEADFORM DIMENSION
SIZE X L/2 Y R S T U
A 24.0 88.0 89.7 47.5 23.0 142.0 84.0
E 26.0 94.5 96.0 49.0 24.0 151.0 88.0
J 27.5 101.0 102.5 50.5 25.0 160
...