EN 14766:2005 - 64_e_stf - Baltik vairas

EN 14766:2005 (E)Keyd 1 ≤ 2dd 2 ≤ 2dFigure 31 — Frame dimensions for exemption from the fatigue test with a vertical forceWhere a frame is convertible for male and female riders by the removal of a bar, remove the bar.For tests on suspension frames see the methods for securing the suspension system described in 4.8.5.1.If a suspension-fork is fitted lock it at a length equivalent to that with an 80-kg rider seated on the bicycle either byadjusting the spring/damper or by external means.4.8.6.2 RequirementWhen tested by the method described in 4.8.6.3, there shall be no visible cracks or fractures in the frame and thereshall be no separation of any parts of the suspension system.For carbon-fibre frames, the peak deflection during the test in either direction from the mean position shall notincrease by more than 20 % of the initial values.4.8.6.3 Test methodMount the frame in its normal attitude and secured at the rear drop-outs so that is not restrained in a rotary sense(i.e. preferably by the rear axle) as shown in Figure 32. Fit a suitable roller to the front axle in order to permit theframe to flex in a fore/aft sense under the test forces.Insert a tube equivalent to a seat-stem to a depth of 75 mm in the top of the seat-tube and secure this to themanufacturer's instructions by the normal clamp. Securely attach a horizontal, rearward extension (E in Figure 32)to the top of this bar such that its length (dimension h in Figure 32) places point H in a position equivalent to that ofthe centre of the saddle-clamp with the bicycle at its maximum saddle height recommended for the particular frame,or, if the maximum saddle height information is not available, dimension h shall be 250 mm.52