Brake Sets   Modern bicycle brakes may be: rim brakes, in which friction pads are compressed against the wheel rims; internal hub brakes, in which the friction pads are contained within the wheel hubs; or disc brakes, with a separate rotor for braking... 

Frames   The great majority of today's bicycles have a frame with upright seating which looks much like the first chain-driven bike. Such upright bicycles almost always feature the diamond frame, a truss consisting of two triangles: the front triangle... 

Free Wheels   A standard freewheel attaches to a hub by screwing on to external threads that are part of the hub. Pedaling tightens the freewheel down on the threads, so no tools are required to install a freewheel.

Pedals   A bicycle pedal is the part of a bicycle that the rider pushes with his or her foot to propel the bicycle. It provides the connection between the cyclist's foot or shoe  and the crank  allowing the leg to turn the bottom bracket axl... 

Saddles        
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       There are two fundamental types of saddle construction in current use: padded plastic or stretched leather. The ty...