ASTM F1625-00(2008)
(Specification)Standard Specification and Test Method for Rear-Mounted Bicycle Child Carriers
Standard Specification and Test Method for Rear-Mounted Bicycle Child Carriers
ABSTRACT
This specification covers rear-mounted bicycle child carriers. It does not cover child carriers mounted in front of handlebars or to the top tube, head tube, or behind the handlebars in front of the rider. The carrier shall be manufactured free of burrs, sharp edges, and sharp points; when present, these shall be properly covered with protective coatings to prevent injuries. In addition, the carrier shall be equipped with a rear reflector, footrests, backrest, armrests, protective devices to prevent contact of hands and feet with moving or movable components of the bicycle, and belt or capturing devices to keep the child from standing in or leaving the carrier. The carrier shall be protected against corrosion, with any plastic or synthetic components stabilized against ultraviolet radiation and resistant to ozone. Tests for high and low temperature resistance, high and low temperature drop, and strength shall be performed and shall conform to the requirements specified. Additional tests for flammability, sharp points, sharp edges, ambient drop, retention system pull, and retention system security may be performed as well.
SCOPE
1.1 This specification covers child carriers that mount to the rear of bicycles in order to transport children or accessory loads with a maximum weight of 18 kg (40 lb). This specification does not apply to child carriers that mount in front of the handlebars, or to the top tube, head tube, or behind the handlebars in front of the rider.
Note 1—In the instructions, the manufacturer must warn the rider that a load added to the bicycle will lessen the stability and alter the riding characteristics of the bicycle. This complication is particularly important when riding with children who are near the high end of the weight range.
1.2 The following safety hazards caveat pertains only to the test method portions, Sections 5, 6, and 7, 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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Designation:F1625 −00(Reapproved 2008) An American National Standard
Standard Specification and Test Method for
Rear-Mounted Bicycle Child Carriers
This standard is issued under the fixed designation F1625; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Title 16,Code of Federal Regulations, Part 1500.49, Sharp
Edges
1.1 Thisspecificationcoverschildcarriersthatmounttothe
16CFR 1501, Small Parts
rearofbicyclesinordertotransportchildrenoraccessoryloads
16CFR 1303, Lead in Coatings
with a maximum weight of 18 kg (40 lb). This specification
does not apply to child carriers that mount in front of the
3. Terminology
handlebars, or to the top tube, head tube, or behind the
handlebars in front of the rider. 3.1 Definition:
3.1.1 bicycle child carrier—a seating device, the shape of
NOTE 1—In the instructions, the manufacturer must warn the rider that
which is adapted to the seated position of a child and mounts
a load added to the bicycle will lessen the stability and alter the riding
characteristics of the bicycle. This complication is particularly important to the rear of the bicycle, which keeps the child in a
when riding with children who are near the high end of the weight range.
comfortable position during the ride.
1.2 The following safety hazards caveat pertains only to the
test method portions, Sections 5, 6, and 7, of this specification: 4. Requirements
This standard does not purport to address all of the safety
4.1 General—Childcarriersshallbedesignedandmanufac-
concerns, if any, associated with its use. It is the responsibility
tured in such a way that components with which the child or
of the user of this standard to establish appropriate safety and
rider come into contact do not cause injuries during normal
health practices and determine the applicability of regulatory
use, or when used in accordance with the manufacturer’s
limitations prior to use.
instructions.Surfacesmustbefreefromburrs,sharpedges,and
points; if such are present they must be covered by protective
2. Referenced Documents
coverings.Noopeningswithwhichthechild’shandscancome
2.1 ASTM Standards:
in contact shall have dimensions larger than 6 mm (0.236 in.)
B117Practice for Operating Salt Spray (Fog) Apparatus
but also smaller than 13 mm (0.512 in.), that is, holes with
2.2 ISO Standards:
dimensions between 0.236 and 0.512 in. (6 and 13 mm) are
ISO/TC149/SC1N368, Luggage Carriers for Bicycles
forbidden.Childcarriersmustbeequippedwitharearreflector.
ISO/TC149/SC1 N369, Child Seats for Bicycles, Concepts,
The manufacturer must warn the rider that a load added to the
Safety Requirements and Testing
bicycle will lessen the stability and alter the riding character-
2.3 Government Standards:
istics of the bicycle.
Title 16,Code of Federal Regulations, Part 1500.44, Flam-
4.2 Structure:
mability
4.2.1 Assembly—When assembled in accordance with the
Title 16,Code of Federal Regulations, Part 1500.48, Sharp
instructionsprovidedbythemanufacturer,theseatcomponents
Points
must be firmly joined and fixed.
4.2.2 Equipment—Child carriers shall be equipped with the
This specification is under the jurisdiction ofASTM Committee F08 on Sports
following equipment:
Equipment, Playing Surfaces, and Facilitiesand is the direct responsibility of
4.2.2.1 Footrests,
Subcommittee F08.10 on Bicycles.
4.2.2.2 Backrest,
Current edition approved April 1, 2008. Published May 2008. Originally
approved in 1995. Last previous edition approved in 2000 as F1625–00. DOI: 4.2.2.3 Armrests (that may be extensions of the sides of the
10.1520/F1625-00R08.
seat surface),
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.2.4 Protective devices that prevent contact of hands and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
feet with moving or movable components of the bicycle which
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
could cause injury, and
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
4.2.2.5 Belt or other capturing devices designed to restrain
4th Floor, New York, NY 10036, http://www.ansi.org.
the child from standing in or leaving the carrier. Buckles, if
Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402. used, must be difficult for the child passenger to open.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1625−00 (2008)
4.2.3 Attachment—The attachment process for connecting 5.2.2 Examine the carrier for damage or distortion that
the seat portion of the carrier either to dedicated mounting could affect the safety or function of the carrier.
hardware or to a luggage carrier, and attachment of the 5.2.3 Damage or distortion that could affect the safety or
mounting hardware or the luggage carrier to the bicycle frame, function of the carrier constitutes failure of the test.
shall be of a simple and secure procedure. If tools are required
5.3 High-Temperature Drop Test:
for mounting, mounting must be accomplished with common
5.3.1 Store the carrier for at least 4 h, but not more than 24
household tools, and must offer no reasonable opportunity of
h, at a temperature of 50 6 3°C (122 6 5°F).
incorrect mounting.
5.3.2 Remove the carrier from the hot environment and
4.2.4 Test Criteria—After testing in accordance with Sec-
mount it on the test fixture depicted in Fig. 1 that holds the
tions 5 and 6 of this specification the child carrier shall show
lowest point of the underside of the seating area of the carrier
no visible signs of fracture, nor any deformation or displace-
shell at a height of 1.00 6 0.01 m (39.37 6 0.39 in.) above a
ment that would impair the function of the child carrier or the
concrete floor. The bottom of the fixture has a pivoting device
bicycle, as defined by the allowable amounts set forth in
that allows the fixture to rotate until it contacts the floor. The
Sections 5 and 6.
mass of the drop arm of the fixture is 11+0.5−0 kg
(24+1.0−0 lb). Within 1 min after removal from the condi-
4.3 Security of Seat Assembled to Bicycle:
tioned environment, release the carrier under gravity from rest
4.3.1 Ifthemeansofattachmentofthecarriertothebicycle
to one side or the other onto a flat concrete surface, as if the
is within easy reach of the child, and also is of a type that the
bicycle to which it was mounted fell over.
child may be able to loosen, then there shall be a secondary
5.3.3 Examine the carrier for damage or distortion that
device to restrict movement of the carrier, either by providing
could affect the safety or function of the carrier.
an additional and independent attachment or by ensuring that
5.3.4 Damage or distortion that could affect the safety or
loosening the primary attachment will not fully release the
function of the carrier constitutes failure of the test.
connection.
4.3.2 Child carriers that do not attach directly to the bicycle
5.4 Low-Temperature Resistance:
seat tube, such as rack-mounting models, shall have an
5.4.1 Store the carrier for at least 4 h, but not more than 24
additional attachment device connecting the seat portion either
h, at a temperature of−7 6 3°C (20 6 5°F).
to a frame tube or to the saddle pillar, with sufficient strength
to limit rearward movement of the seat.
4.4 Dimensions:
4.4.1 Dimensions of the interior of the carrier seating area
shall be adequate for the seated child at the upper range of the
weight limitation.
4.4.2 Thebackrestmusthaveaminimumheightof350mm
(13.8 in.).
4.4.3 The armrests must be high enough to keep the child
stable in lateral directions.
4.5 Materials:
4.5.1 Plastics or other synthetic materials, if used, shall be
stabilized against ultraviolet radiation and resistant to ozone.
4.5.2 The carrier shall be protected against corrosion and
tested in accordance with salt spray test defined in Practice
B117, for a period of 96 h. Tested components shall show no
visible evidence of corrosion or deterioration which could
jeopardizestructuralintegrityoftheentireassembly.Thetested
unit shall continue to operate in accordance with the manufac-
turer’s written instructions.
5. Environmental Temperature Tests
5.1 General—Performthetestsinthissectiononallcarriers
to determine whether there are any adverse affects on the
strength and function of the carrier under conditioned environ-
ments.
5.1.1 Conduct these environmental temperature tests prior
to the dynamic load tests that follow.
5.2 Resistance to High Temperatures:
NOTE 1—Figures are intended only to indicate one possible configura-
5.2.1 Store the carrier for at least 4 h, but not more than 24
tion for test fixtures and are not intended to be adequate for fabrication.
h at a temperature of 50 6 3°C (122 6 5°F). FIG. 1Child Carrier Drop Test Fixture
F1625−00 (2008)
5.4.2 Examine the carrier for damage or distortion that
could affect the safety or function of the carrier.
5.4.3 Damage or distortion that could affect the safety or
function of the carrier constitutes failure of the test.
5.5 Low-Temperature Drop Test:
5.5.1 Store the carrier for at least 4 h, but not more than 24
h, at a temperature of−7 6 3°C (20 6 5°F).
5.5.2 Remove the carrier from the cold environment and
mount it on the test fixture depicted in Fig. 1 that holds the
lowest point of the underside of the seating area of the carrier
shell at a height of 1.00 6 0.01 m (39.37 6 0.39 in.) above a
concrete floor. The bottom of the fixture has a pivoting device
that allows the fixture to rotate until it contacts the floor. The
mass of the drop arm is 11+0.5−0 kg (24+1.0−0 lb).
Within 1 min after removal from the conditioned environment,
release the carrier under gravity from rest to one side or the
other onto a flat concrete surface, as if the bicycle to which it
was mounted fell over.
5.5.3 Examine the carrier for damage or distortion that
could affect the safety or function of the carrier.
5.5.4 Damage or distortion that could affect the safety or
function of the carrier constitutes failure of the test.
6. Strength: Dynamic Load Tests
6.1 Purpose—There are three reasons for the dynamic load
tests: (a) to determine whether fasteners become loosened by
vibration;(b)todeterminewhetherthecarriershiftsinposition
duringthetests;and(c)todeterminewhetherdamageorcracks
NOTE 1—Figures are intended only to indicate one possible configura-
occur anywhere in the carrier or the mounting system as a
tion for test fixtures and are not intended to be adequate for fabrication.
result of the tests.
FIG. 2Child Carrier Vibration and Lateral Sway Test Fixture
6.2 Vib
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:F1625–95 Designation: F 1625 – 00 (Reapproved 2008)
Standard Specification and Test Method for
Rear-Mounted and Front-Mounted Bicycle Child
CarriersRear-Mounted Bicycle Child Carriers
This standard is issued under the fixed designation F1625; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers child carriers that mount to the rear of bicycles; or to the top tube, head tube, or behind the
handlebars bicycles in front of the rider, in order to transport children or accessory loads with a maximum weight of 18 kg (40
lb).Thisspecificationdoesnotapplytochildcarriersthatmountinfrontofthehandlebars,ortothetoptube,headtube,orbehind
the handlebars in front of the rider.
NOTE 1—In the instructions, the manufacturer must warn the rider that a load added to the bicycle will lessen the stability and alter the riding
characteristics of the bicycle. This complication is particularly important when riding with children who are near the high end of the weight range.
1.2 Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportions,Sections5,6,and7,ofthisspecification: 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
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus
2.2 ISO Standards:
ISO/TC149/SC1 N368, Luggage Carriers for Bicycles
ISO/TC149/SC1 N369, Child Seats for Bicycles, Concepts, Safety Requirements and Testing
2.3 Government Standards:
Title 16, Code of Federal Regulations, Part 1500.44, Flammability
Title 16, Code of Federal Regulations, Part 1500.48, Sharp Points
Title 16, Code of Federal Regulations, Part 1500.49, Sharp Edges
16 CFR 1501, Small Parts
16 CFR 1303, Lead in Coatings
3. Terminology
3.1 Definition:
3.1.1 bicycle child carrier—aseatingdevice,theshapeofwhichisadaptedtotheseatedpositionofachildandmountstoeither
the rear of the bicycle, the top tube, the head tube, or behind the handle bars in front of the rider, which keeps the child in a
comfortablepositionduringtheride.—aseatingdevice,theshapeofwhichisadaptedtotheseatedpositionofachildandmounts
to the rear of the bicycle, which keeps the child in a comfortable position during the ride.
4. Requirements
4.1 General—Child carriers shall be designed and manufactured in such a way that components with which the child or rider
This specification is under the jurisdiction of ASTM Committee F-8 on Sports Equipment and Facilities and is the direct responsibility of Subcommittee F08.19 on
Bicycle Accessories.
Current edition approved Oct. 10, 1995. Published December 1995.
This specification is under the jurisdiction of ASTM Committee F08 on Sports Equipment and Facilities and is the direct responsibility of Subcommittee F08.10 on
Bicycles.
Current edition approved April 1, 2008. Published May 2008. Originally approved in 1995. Last previous edition approved in 2000 as F1625–00.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
, Vol 03.02.volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute, 11 W. 42nd St., 13th Floor, New York, NY 10036.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 1625 – 00 (2008)
come into contact do not cause injuries during normal use, or when used in accordance with the manufacturer’s instructions.
Surfaces must be free from burrs, sharp edges, and points; if such are present they must be covered by protective coverings. No
openings with which the child’s hands can come in contact shall have dimensions larger than 6 mm (0.236 in.) but also smaller
than 13 mm (0.512 in.), that is, holes with dimensions between 0.236 and 0.512 in. (6 and 13 mm) are forbidden. Rear-mount
childChild carriers must be equipped with a rear reflector. The manufacturer must warn the rider that a load added to the bicycle
will lessen the stability and alter the riding characteristics of the bicycle.
4.2 Structure:
4.2.1 Assembly—Whenassembledinaccordancewiththeinstructionsprovidedbythemanufacturer,theseatcomponentsmust
be firmly joined and fixed.
4.2.2 Equipment—Child carriers shall be equipped with the following equipment:
4.2.2.1 Footrests,
4.2.2.2 Backrest,
4.2.2.3 Armrests (that may be extensions of the sides of the seat surface),
4.2.2.4 Protective devices that prevent contact of hands and feet with moving or movable components of the bicycle which
could cause injury, and
4.2.2.5 Belt or other capturing devices designed to restrain the child from standing in or leaving the carrier. Buckles, if used,
must be difficult for the child passenger to open.
4.2.3 Attachment—The attachment process for connecting the seat portion of the carrier either to dedicated mounting hardware
or to a luggage carrier, and attachment of the mounting hardware or the luggage carrier to the bicycle frame, shall be of a simple
andsecureprocedure.Iftoolsarerequiredformounting,mountingmustbeaccomplishedwithcommonhouseholdtools,andmust
offer no reasonable opportunity of incorrect mounting.
4.2.4 Test Criteria—AftertestinginaccordancewithSections5and6ofthisspecificationthechildcarriershallshownovisible
signsoffracture,noranydeformationordisplacementthatwouldimpairthefunctionofthechildcarrierorthebicycle,asdefined
by the allowable amounts set forth in Sections 5 and 6.
4.3 Security of Seat Assembled to Bicycle:
4.3.1 Ifthemeansofattachmentofthecarriertothebicycleiswithineasyreachofthechild,andalsoisofatypethatthechild
may be able to loosen, then there shall be a secondary device to restrict movement of the carrier, either by providing an additional
and independent attachment or by ensuring that loosening the primary attachment will not fully release the connection.
4.3.2Rear-mount child carriers that do not attach directly to the bicycle seat tube, such as rack-mounting models, shall have an
additional attachment device connecting the seat portion either to a frame tube or to the saddle pillar, with sufficient strength to
limit rearward movement of the seat.
4.3.3Carriers that mount to the top tube shall have an additional connection to prevent rotation of the carrier around the tube
onto which it mounts.
4.3.4The rider must ensure that carriers that mount to the top tube shall not limit or impair the turning radius of the bicycle.
4.4
4.3.2 Child carriers that do not attach directly to the bicycle seat tube, such as rack-mounting models, shall have an additional
attachmentdeviceconnectingtheseatportioneithertoaframetubeortothesaddlepillar,withsufficientstrengthtolimitrearward
movement of the seat.
4.4 Dimensions:
4.4.1 Dimensionsoftheinteriorofthecarrierseatingareashallbeadequatefortheseatedchildattheupperrangeoftheweight
limitation.
4.4.2For rear-mount carriers, the backrest must have a minimum height of 350 mm (13.8 in.). For front-mount carriers, the
backrest must have a minimum height of 305 mm (12.0 in.).
4.4.2 The backrest must have a minimum height of 350 mm (13.8 in.).
4.4.3 The armrests must be high enough to keep the child stable in lateral directions.
4.5 Materials:
4.5.1 Plastics or other synthetic materials, if used, shall be stabilized against ultraviolet radiation and resistant to ozone.
4.5.2 The carrier shall be protected against corrosion and tested in accordance with salt spray test defined in Practice B117, for
aperiodof96h.Testedcomponentsshallshownovisibleevidenceofcorrosionordeteriorationwhichcouldjeopardizestructural
integrityoftheentireassembly.Thetestedunitshallcontinuetooperateinaccordancewiththemanufacturer’swritteninstructions.
5. Environmental Temperature Tests
5.1 General—Perform the tests in this section on all carriers to determine whether there are any adverse affects on the strength
and function of the carrier under conditioned environments.
5.1.1 Conduct these environmental temperature tests prior to the dynamic load tests that follow.
5.2 Resistance to High Temperatures :
5.2.1 Store the carrier for at least 4 h, but not more than 24 h at a temperature of 50 6 3°C (122 6 5°F).
5.2.2 Examine the carrier for damage or distortion that could affect the safety or function of the carrier.
5.2.3 Damage or distortion that could affect the safety or function of the carrier constitutes failure of the test.
F 1625 – 00 (2008)
5.3 High-Temperature Drop Test :
5.3.1 Store the carrier for at least 4 h, but not more than 24 h, at a temperature of 50 6 3°C (122 6 5°F).
5.3.2 RemovethecarrierfromthehotenvironmentandmountitonthetestfixturedepictedinFig.1thatholdsthelowestpoint
of the underside of the seating area of the carrier shell at a height of 1.00 6 0.01 m (39.37 6 0.39 in.) above a concrete floor.The
bottom of the fixture has a pivoting device that allows the fixture to rotate until it contacts the floor. The mass of the drop arm of
the fixture is 11+0.5−0 kg (24+1.0−0 lb). Within 1 min after removal from the conditioned environment, release the carrier
under gravity from rest to one side or the other onto a flat concrete surface, as if the bicycle to which it was mounted fell over.
5.3.3 Examine the carrier for damage or distortion that could affect the safety or function of the carrier.
5.3.4 Damage or distortion that could affect the safety or function of the carrier constitutes failure of the test.
5.4 Low-Temperature Resistance :
5.4.1 Store the carrier for at least 4 h, but not more than 24 h, at a temperature of−7 6 3°C (20 6 5°F).
5.4.2 Examine the carrier for damage or distortion that could affect the safety or function of the carrier.
5.4.3 Damage or distortion that could affect the safety or function of the carrier constitutes failure of the test.
5.5 Low-Temperature Drop Test:
5.5.1 Store the carrier for at least 4 h, but not more than 24 h, at a temperature of−7 6 3°C (20 6 5°F).
5.5.2 RemovethecarrierfromthecoldenvironmentandmountitonthetestfixturedepictedinFig.1thatholdsthelowestpoint
of the underside of the seating area of the carrier shell at a height of 1.00 6 0.01 m (39.37 6 0.39 in.) above a concrete floor.The
bottom of the fixture has a pivoting device that allows the fixture to rotate until it contacts the floor. The mass of the drop arm is
11+0.5−0 kg (24+1.0−0 lb). Within 1 min after removal from the conditioned environment, release the carrier under gravity
from rest to one side or the other onto a flat concrete surface, as if the bicycle to which it was mounted fell over.
5.5.3 Examine the carrier for damage or distortion that could affect the safety or function of the carrier.
5.5.4 Damage or distortion that could affect the safety or function of the carrier constitutes failure of the test.
6. Strength: Dynamic Load Tests
6.1 Purpose—There are three reasons for the dynamic load tests: (a) to determine whether fasteners become loosened by
vibration; (b) to determine whether the carrier shifts in position during the tests; and ( c) to determine whether damage or cracks
occur anywhere in the carrier or the mounting system as a result of the tests.
NOTE 1—Figures are intended only to indicate one possible configura-
tion for test fixtures and are not intended to be adequate for fabrication.
FIG. 1 Child Carrier Drop Test Fixture
F 1625 – 00 (2008)
6.2 Vibration Test:
6.2.1 General Test Method:
6.2.1.1 MountthecarriersecurelytothefixturedepictedinFig.2.Thefixtureispartofanapparatusthatiscapableofproviding
the motion described in 6.2.2 and 6.2.4.
6.2.1.2 Load the carrier with a system that has a mass of 18+1−0kg(40+2−0 lb), such as sand bags.The center of gravity
of the added mass shall be no more than 152 mm (6.0 in.) above the bottom surface of the seating area. Secure the load with the
retention system provided with the carrier. Mark the position of the carrier on the fixture, and the positions of the closures on all
straps.
6.2.2 Vertical Vibration Test—ThefixturedepictedinFig.2issetupsothatthetotalverticalmovementatthetopofthevertical
tube is 10 mm (0.39 in.), consisting of 5 mm up and 5 mm down from the central position in non-sinusoidal motion.The “bump”
is an instantaneous rise and instantaneous fall from a 1-in. (25-mm) wide cleat.An actual 19-in. (480-mm) road bicycle frame or
a 16-in. (410-mm) mountain bicycle frame can be attached to the mounting structure indicated in the figure.Adjust the motor so
that the rate of complete vertical cycles is 7 Hz (420 cycles per minute). Continue the test for a total of 42000 complete vertical
cycles.
6.2.3 Inspection—Inspect the carrier for damage, deformation, and displacement. Displacement at any attachment point where
the carrier is attached to the bicycle shall not exceed 10 mm (0.394 in.), and no cracking or splitting of any carrier components
shall have occurred.
6.2.4 Lateral Vibration Test—In this test, tilt the carrier with the 18+1−0-kg (40+2−0-lb) load sinusoidally from side to
side, simulating a bicyclist riding up a steep hill that requires the rider to stand and pedal vigorously.The fixture has a system that
tilts it alternately, in sinusoidal fashion, from center to 8° on either side of center, at a frequency of 0.5 Hz (30 cycles/min). The
fixtureisofsuchsizethatthelowestlevelofthecarrierseatis800mm(31.5in.)abovetherotationalaxis.Tiltthesystemthrough
50000 complete cycles.
6.2.5 Inspection—Inspect the carrier for damage, deformation, and displacement. Displacement at any attachment point where
the carrier is attached to the bicycle shall not exceed 10 mm (0.394 in.). No cracking or splitting of any carrier components shall
have occurred.
NOTE 1—Figures are intended only to indicate one possible configura-
tio
...
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