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Portage strap: a strap (usually made of leather) attached to the inside of the bike frame, designed to make carrying the bike over one's shoulder easier; Pulley wheel: see Jockey wheel; Power meter: a device on a bicycle that measures the power output of the rider; Quick release: a skewer with a lever on one end that loosens when the lever is ...
The speed on straight sections of the track reaches 110 km/h (70 mph) or more on longer tracks, but the limited speed on curves lowers the average. At the start of a race it takes between one and two seconds for the motorcycle to reach the "curve speed" (somewhat lower than the average), which is roughly estimated to be the equivalent of 2.5 to ...
In many cases, such as remote controlled toys, the pinion is also the drive gear for a reduction in speed, since electric motors operate at higher speed and lower torque than desirable at the wheels. However the reverse is true in watches, where gear trains commence with a high-torque, low-speed spring and terminate in the fast-and-weak escapement.
Competitors use this loose surface to slide their machines sideways into the bends using the rear wheel to scrub-off speed while still providing the drive to power the bike forward and around the bend. FIM regulations state that the motorcycles used must have no brakes, run on pure methanol, use only one gear and weigh a minimum of 78 kg. Races ...
Unlike Speedway bikes which have no gears, Grasstrack bikes usually have a 2 speed gearbox. [1] Both Speedway and Grasstrack bike have no brakes. [1] The only other main difference is that speedway bikes have no rear suspension and are shorter in length, usually by around 10–12 inches. Also there is a class called Pre-75.
The large bike with a 650 cc Rotax engine was produced since 2004 in three different variations. The JAWA 650 classic was a retro bike with classic proportions. The JAWA 650 Style was aimed for city streets, and the JAWA 650 Dakar was a full-scale enduro bike similar to the Honda XL Transalp .
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