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A spoke wrench is used during the assembly, maintenance, or repair of bicycle wheels to adjust the tension of the spokes. The goal common to these activities is to bring the wheel (nearer) to the state of true — namely, a wheel in which the rim is: a circle concentric with the axis of the axle in the hub, and
Radial (left) and semi-tangential (right) bicycle spoke patterns. Wheelbuilding is the process of assembling wire wheels (generally a bicycle wheel, but including wheelchairs, and some cars and motorcycles). The components of a wire wheel are the rim, spokes, nipples, and hub.
Skirt guard or coatguard: a device fitted over the rear wheel of a bicycle to prevent a long skirt, coat or other trailing clothes or luggage from catching in the wheel, or in the gap between the rim and the brakes; Spindle: an axle around which a pedal rotates; threaded at one end to screw into crank arms; Spoke: connects wheel rim to hub ...
Typically, each spoke is pretensioned to about 100 pounds of force, on an unloaded wheel. When the bicycle is loaded with a rider, then the spokes below the hub have less tension. With every rotation of the wheel, there is repeatedly changes in the spoke tension that can contribute to broken spokes because of fatigue failures.
The Bicycle Wheel is an educational book that explains the structural theory of a wire wheel, and teaches the practical methodology of building bicycle wheels. [1]The book is made up of three parts.
High quality bicycles with conventional wheels use spokes of stainless steel, while cheaper bicycles may use galvanized (also called "rustless") or chrome plated spokes. While a good quality spoke is capable of supporting about 225 kgf (c. 500 pounds-force or 2,200 newtons ) of tension, they are used at a fraction of this load to avoid ...