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BB7 can refer to: BB7, a postcode district in the BB postcode area; Avid BB7, a mechanical disc brake system for bicycles manufactured by SRAM Corporation; Big Brother 7, a television programme in various versions
On March 1, 2004, SRAM purchased Avid, a designer and manufacturer of bicycle brake components. Its current line-up includes mechanical disc brakes, rim brakes, levers, cables and maintenance products for a range of uses including MTB and cyclocross. They also produce two road bike disc brakes.
The rod-actuated brake, or simply rod brake (roller lever brake in Raleigh terminology), uses a series of rods and pivots, rather than Bowden cables, to transmit force applied to a hand lever to pull friction pads upwards against the inner surface, which faces the hub, of the wheel rim. They were often called "stirrup brakes" due to their shape.
The concept of brake pads or disc brakes as an alternative to drum brakes had been around at least as early as a patent by F. W. Lanchester in 1902. [2] However, due to high cost and inefficiencies compared to drum brakes they were not commonly implemented until after World War II. [3]
Once the brake pads make contact with the rear wheel, the Slidepad slides forward, which pulls a cable that is connected to the front brakes. [1] Similar to the anti-lock brake system in cars, the mechanism prevents the front wheel from locking, no matter how hard the brake is pressed or how slippery the road conditions are.
The embedded sensor in the brake pad 2 contacts the rotor and creates a connection to ground of the sensor. The metal plate 3 contacts the rotor and creates a noise. This wear clip should be positioned so that the rotor contacts the clip before it contacts the brake pad. The rotor should push against that clip, not drag it away from the brake pad.