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Dropout: a bicycle rear fork end that allows the rear wheel to be removed without first derailing the chain. The term dropout is often incorrectly used to refer to any fork end, but not all fork ends are dropouts; Dustcap: any cap serving to keep dirt and contamination out of an assembly. Common over crank bolts, often plastic
The Suntour Swing Shock fork is based on a coil cantilevered swing set-up, and suspension is given by a coil spring which is located within the steerer tube and can be accessed from the top, [9] technology which was originally used for suspension on early motorcycles.
A Suntour Sprint rear derailleur A front derailleur manufactured by Suntour a pair of Suntour road brakes. In 1964, Suntour invented the slant-parallelogram rear derailleur. The parallelogram rear derailleur had gained prominence after Campagnolo's introduction of the "Gran Sport" in 1949, [7] [8] and the slant-parallelogram was an improvement of it that allowed the derailleur to maintain a ...
A bicycle fork is the part of a bicycle that holds the front wheel. A fork typically consists of two blades which are joined at the top by a fork crown. The crown is often at the front. Most suspension forks have an arch connecting the two side of the lowers (the part connected to the axle.)
Threaded forks necessitate that the threads on the steerer only use the top 25–51 mm (1–2 in), therefore the forks are sold in varying lengths. If there is a need to use a fork that is too long, meaning the fork steerer is not threaded down far enough, a bicycle mechanic can use a die to extend the threads. This is not recommended if the ...
A diagram showing the effect of decreasing the head tube angle, the fork offset, or the wheel size (diameter) on the trail. Animation showing how fork offset must change with changes in steering axis angle to keep trail constant. Animation showing how fork offset must change as trail changes to keep steering axis angle constant.
Most motorcycles today use telescopic forks for the front suspension. The forks can most easily be understood as simply encased long coil springs with hydraulic damping of excess spring energy. They allow the front wheel to react to imperfections in the road while isolating the rest of the motorcycle from that motion. Telescopic forks on a 1969 BMW
The coil springs usually bear on a pad alongside the stub-axle. Often, the shock is collinear with the spring forming a coil-over. In many cases, the damper is also used as a restraint strap to stop the arm descending so far that the coil spring falls out through being completely unloaded.