EN 14766:2005 - 64_e_stf - Baltik vairas

EN 14766:2005 (E)Where a rear suspension system is incorporated in the frame, secure the spring/damper unit in a positionequivalent to that which would occur with an 80-kg rider seated on the bicycle; if the type of suspension systemdoes not permit it to be locked, then replace the spring/damper unit by a solid link of the appropriate size and withend fittings similar to those of the spring/damper unit.4.8.3.2 RequirementWhen tested by the method described in 4.8.3.3, there shall be no visible cracks or fractures in the assembly andthe permanent set measured between the axes of the wheel axles (the wheel-base - see 3.22 and Figure 28) shallnot exceed 60 mm for a frame-fork assembly and there shall be no separation of any parts of any suspensionsystem.4.8.3.3 Test methodConduct the test on the assembly used for the test in 4.8.2 or, in the case of a frame manufacturer who does notmake forks, with the same frame with a suitable fork fitted (see 4.8.3.1).As shown in Figure 28, mount the frame-fork assembly at its rear axle attachment points so that it is free to rotateabout the rear axle in a vertical plane. Support the front fork on a flat steel anvil so that the frame is in its normalposition of use. Securely fix masses of 10 kg, 30 kg, and 50 kg to the top of the steering head, the seat-post, andthe bottom bracket respectively, as shown in Figure 28.Measure the wheel-base with the three masses in place. Rotate the assembly about the rear axle until the distancebetween the low-mass roller and the anvil is 300 mm then allow the assembly to fall freely to impact on the anvil.Repeat the test and then measure the wheel-base again with the three masses in place and the roller resting onthe anvil.47