BS EN ISO 4210-5:2014 pdf free

BS EN ISO 4210-5:2014 pdf free.Cycles一Safety requirements for bicycles
Immerse the handlebar, with handlebar grips or plugs fitted, in water at room temperature for 1 h and then place the handlebar in a freezer until the handlebar is at a temperature lower than -5 °C. Remove the handlebar from the freezer and allow the temperature of the handlebar to reach -5 °C, and then apply a force of 70 N to the grip or plug in the loosening direction as shown in Figure 1. Maintain the force until the temperature of the handlebar has reached +5 °C. It shall be permitted to create a hole in the plug to allow for the testing fixture to be fitted so long as the hole does not affect the seat of the plug in the handlebar and the fixture does not contact the handlebar during the test.
For stems which have a quill for insertion into a fork steerer, clamp the quill securely in a fixture to the minimum insertion depth as specified in ISO 4210-2:2014, 4.7.3, or for stem extensions which clamp directly on to an extended fork steerer, attach the extension to a fork steerer according to the manufacturer’s instructions and clamp this fork steerer securely in a fixture to the appropriate height.
Assemble a test bar to the stem, and apply a force of F1 at a distance of d from the axis of the stem as shown in Table 1 and Figure 2. Maintain this force for 1 min.
Assemble the handlebar and stem in accordance with the manufacturer’s instructions and, unless the handlebar and stem are permanently connected, e.g. by welding or brazing, align the grips portion of the handlebar in a plane perpendicular to the stem axis [see Figure 3 a) or Figure 4 a]. For stems which have a quill for insertion into a fork steerer, clamp the quill securely in a fixture to the minimum insertion depth, or for stem extensions which clamp directly on to an extended fork steerer, attach the extension to a fork steerer according to the manufacturer’s instructions and clamp this fork steerer securely in a fixture to the appropriate height. Apply a force of F2 (see Table 2) at a distance of 50 mm from the free end of the handlebar and parallel to the axis of the fork steerer as shown in Figures 3 or 4. Maintain this force for 1 min.BS EN ISO 4210-5 pdf download.