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Zipp has introduced the "customized" ZEDTECH wheel line in 2007. Users can choose from an array of colors for decals, spoke nipples, and hub end caps. All ZEDTECH wheels now include aerodynamic dimpled hubs with ceramic bearings. Also in 2007, a new 808 track wheel was introduced with 20/24 spoke pattern and the 343 wheel set (303F + 404R).
Disc wheels are designed to minimize aerodynamic drag. A full disc is usually heavier than traditional spoke wheels, and can be difficult to handle when ridden with a cross wind. For this reason, international cycling organizations often ban disc wheels or limit their use to the rear wheel of a bicycle. However, international triathlon ...
Some triathlon bikes use 650c wheels (a nominal diameter of 65 centimeters) rather than the conventional 700c wheels used on nearly all road bikes. The smaller wheels weigh less, have a smaller cross-sectional area (reducing wind resistance), and reduce the overall wind resistance of the bicycle by bringing the frame and cyclist closer to the ...
They also feature aerodynamic frames, wheels, and handlebars. Triathlon bicycles have seatposts that are closer to vertical than the seatposts on road racing bicycles. This enables a greater contribution from hamstring and gluteus muscles. [4] Triathlon bicycles also have specialized handlebars known as triathlon bars or aero bars.
The remains of a pair of cart wheels with metal axle assembly. An ox-wagon in Aliwal North, South Africa. Note the three missing spokes and the metal tire. Wooden spoke wheel with metal rim from antique truck on display in Underground Atlanta. Metal tension-spoked wheel from a bicycle.
Wire wheels, wire-spoked wheels, tension-spoked wheels, or "suspension" wheels are wheels whose rims connect to their hubs by wire spokes. [ 1 ] [ 2 ] [ 3 ] Although these wires are considerably stiffer than a similar diameter wire rope , they function mechanically the same as tensioned flexible wires, keeping the rim true while supporting ...
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Whilst spoked wheels offered a degree of flexibility to help absorb road imperfections, they also required periodic maintenance to ensure correct spoke tension and required the fitment of an inner tube. Honda claimed the Comstar design combined the strength of a cast wheel but allowed a predetermined level of radial flex like spoked wheels.