EN 14766:2005 - 64_e_stf - Baltik vairas

EN 14766:2005 (E)4.9.5.2.2 Test methoda) This test is that described in 4.9.5.1.2.b) This test is similar to that described in 4.9.5.1.2 except that the dropping height shall be increased to600 mm.4.9.6 Front fork – bending fatigue test4.9.6.1 RequirementWhen tested by the method described in 4.9.6.2, there shall be no fractures or visible cracks in any part of the fork.For carbon-fibre forks, the peak deflections during the test in either direction from the mean position shall notincrease by more than 20 % of the initial values.4.9.6.2 Test methodMount the fork in a fixture representative of the head-tube and gripped in the normal bearings as shown inFigure 35.Apply cycles of fully-reversed, dynamic forces of ± 650 N in the plane of the wheel and perpendicular to the stemtubeto a loading attachment and swivel on an axle located in the axle-slots of the blades for 100 000 test cycleswith a test frequency not exceeding 25 Hz.57