EN 14766:2005 - 64_e_stf - Baltik vairas

EN 14766:2005 (E)Dimension in millimetresKey1 Minimum insertionFigure 51 — Seat-pillar – fatigue test4.14.7.3 Test methodInsert the seat-pillar to its minimum insertion depth (see 4.14.3) and securely clamped by means of its usualfastening device in a fixture representative of that on a bicycle, and with its axis inclined to the horizontal at anangle of 73° as shown in Figure 51.Secure an extension-bar to the saddle attachment point by the appropriate attachment fitting such that the barextends rearwards and downwards at an angle of 10° below the horizontal to permit the application of a vertical testforce at a distance of 70 mm from the centre of the saddle-clamp where the centre-line of the clamp intersects theaxis of the bar, as shown in Figure 51.Apply a repeated, vertically-downward force of 1 200 N to the point described above and shown in Figure 51 for100 000 cycles at a frequency not exceeding 25 Hz.4.15 Drive-chainWhere a chain-drive is used as a means of transmitting the motive force, the chain shall operate over the front andrear sprockets without binding.The chain shall conform to the requirements of ISO 9633.4.16 Chain-guard4.16.1 RequirementA bicycle shall be equipped with one of the following:a) a chain-wheel disc which conforms to 4.16.2, orb) a protective device which conforms to 4.16.3, orc) where fitted with positive foot-retention devices on the pedals, a combined front gear-change guide and aprotective device which conforms to 4.16.4.78