BS EN ISO 4210-4:2014 pdf free
BS EN ISO 4210-4:2014 pdf free.Cycles一Safety requirements for bicycles一Braking test methods
The following referenced documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4210-1, Cycles一Safety requirements for bicycles一Part 1: Terms and definitions
ISO 4210-2:2014, Cycles一Safety requirements for bicycles一Part 2: Requirements for city & trekking,young adult, mountain and racing bicycles
For the purposes of this document, the terms and definitions given in ISO 4210-1 apply.
Test method for the brake lever similar to type A or type B
Fit the gauge illustrated in Figure 1 over the handlebar grip or the handlebar (when the manufacturer does not fit a grip) and the brake lever as shown in Figure 2 so that face A is in contact with the handlebar or grip and the side of the brake lever. Ensure that face B spans an area of that part of the brake lever which is intended for contact with the rider’s fingers without the gauge causing any movement of the brake lever towards the handlebar or grip. Measure the distance, a, the distance between the last part of the lever intended for contact with the rider’s fingers and the end of the lever. The measurement should be conducted only on a fully assembled bicycle.
Fit the gauge ilustrated in Figure 3 over the handlebar and brake lever as shown in Figure 4 so that face A is in contact with the handlebar or handlebar grip and the brake lever. Put the face of cylinder B in contact with the part of the grip intended for contact with the rider’s hand and check if the requirements are met.
For the purposes of braking tests in this part of ISO 4210, for brake levers similar to type A or type B,the test force shall be applied at a distance b, which is equal to either dimension a [see ISO 4210-2:2014,Figure 2 a) and b)] as determined in 4.1.1 or 25 mm from the free end of the brake lever, whichever is the greater [see Figure 5 a) and Figure 5 b)].BS EN ISO 4210-4 pdf free download.
