ASTM F1952-00

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 down hill 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 light weight 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 F1466, except where noted herein.

General Information

• Status: Historical
• Publication Date: 09-Jun-2000
• ICS: 13.340.20 - Head protective equipment
• Technical Committee: F08 - Sports Equipment, Playing Surfaces, and Facilities
• Drafting Committee: F08.53 - Headgear and Helmets

Relations

• Replaced By: ASTM F1952-09 - Standard Specification for Helmets Used for Downhill Mountain Bicycle Racing
• Effective Date: 01-Jan-2009
• 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: 10-Jun-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation: F 1952 – 00
Standard Specification for
Helmets Used for Downhill Mountain Bicycle Racing
This standard is issued under the fixed designation F 1952; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 Shall have the words “For downhill mountain bicycle
racing.”
1.1 This specification covers performance requirements for
helmets used by downhill mountain bicycle riders. Studies
4. Marking the Test Line
have shown higher risk to the head and face for this sport as
4.1 The test line is shown in Fig. 1 and shall be marked in
compared to recreational street riding; hence, this specification
accordance with Test Methods F 1446.
requires greater impact protection and provides performance
criteria for chin bars on full-face helmets, but does not require
5. Conditioning and Number of Samples
full-face helmets. This specification recognizes the desirability
5.1 Shall be in accordance with Test Methods F 1446.
of lightweight construction and ventilation; however, it is a
performancespecificationandisnotintendedtorestrictdesign.
6. Retention System Testing
1.2 All testing and requirements of this specification shall
6.1 Retention system tests shall be performed before impact
be in accordance with Test Methods F 1466, except where
testing.
noted herein.
6.2 The ambient helmet shall be subjected to the positional
1.3 Partial utilization of this standard is prohibited. Any
stability (roll-off) test in accordance with Test Methods F 1446
statement of compliance with this specification must be a
using a 4-kg drop mass from a height of 0.6 m.
certification that the product meets all of the requirements of
6.3 The retention system shall remain intact, and the helmet
this specification in its entirety. A product that fails to meet any
must remain on the headform.
one of the requirements of this specification is considered to
6.4 The hot, cold, and wet helmets shall be subjected to the
have failed this standard, and should not be sold with any
dynamic strength retention test in accordance with Test Meth-
indication that it meets parts of this standard.
ods F 1446 using a 4-kg drop mass from a height of 0.6 m.
6.5 The retention system shall remain intact without elon-
2. Referenced Documents
2 gating more than 30 mm.
2.1 ASTM Standards:
F 1446 Test Methods for Equipment and Procedures Used
7. Impact Testing
inEvaluatingthePerformanceCharacteristicsofProtective
7.1 The helmet can be impacted anywhere on or above the
Headgear
test line with the curbstone anvil in any horizontal orientation.
2.2 Other Standards:
7.2 Use flat, hemispherical, and curbstone anvils in accor-
1995 Standard For Protective Headgear For Use with Mo-
dance with Test Methods F 1446, Figs. 7, 8, and 11.
torcycles and Other Automotive Vehicles
7.3 The helmet shall be dropped onto the flat anvil to
Section C4. Chin Bar Test
achieve an impact velocity of 6.2 m/s 6 3 % (corresponding to
a theoretical drop height of 2.0 m).
3. Labels and Warnings
7.4 The helmet shall be dropped onto the hemispherical and
3.1 Shall meet the requirements of Test Methods F 1446.
curbstone anvils to achieve an impact velocity of 5.6 m/s 6
3 % (corresponding to a theoretical drop height of 1.6 m).
This specificat
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