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A motorcycle fork is the portion of a motorcycle that holds the front wheel and allows one to steer. For handling, the front fork is the most critical part of a motorcycle. The combination of rake and trail determines how stable the motorcycle is. The 'fork' on a motorcycle consists of multiple components.
The rear wheel is guided by a cantilever rear swingarm, whose bearings and spring/damper unit are concealed to give the impression of a rigid frame without rear suspension. Otherwise, modern technology such as an partially integral anti-lock braking system (cornering ABS), assistance systems, fuel injection and upside-down telescopic fork is ...
With one spring above the rear axle and two below, [3] [4] the sprung hub provided about two inches of vertical travel [1] [5] and weighed 17 pounds (7.7 kg) more than a conventional hub. It was designed to allow rear suspension to be offered optionally without altering Triumph's existing frames. [ 1 ]
The biggest change was a shift to a water cooled version of the boxer engine, [8] producing dyno tested 113.5 horsepower (84.6 kW) and 82.1 pound-feet (111.3 N⋅m) torque. [9] BMW claimed 125 horsepower and 92 lb/ft of torque with their own testing methodology . [ 10 ]
The rear end of the motorcycle was updated and streamlined with an LED taillight, allowing for cleaner rear body lines when choosing one of several common aftermarket modifications. These modifications included removal of the turn signal stalks and stock license plate bracket, and replacing them with replacements that "hugged" the body or frame.
The Yamaha XV1900A cruiser was developed to exploit the large displacement end of the market for large cruisers.Yamaha had a well established range of big "Star" cruisers which went up to the Wild Star 1600 cc but there was a need to redesign the engine to meet anticipated exhaust emissions regulations and the opportunity to update the styling, which had remained largely unchanged for a decade.
The power of the engine alone, often called crankshaft power, or power at the crankshaft, will be significantly greater than the power measured at the rear wheel. The amount of power lost due to friction in the transmission (primary drive, gearbox and final drive) depends on the details of the design and construction. Generalizing, a chain ...
The Butler Petrol Cycle was a three-wheeled vehicle, with the rear wheel directly driven by a 5 ⁄ 8 hp (0.47 kW), 40 cc (2.4 cu in) displacement, 2 + 1 ⁄ 4 in × 5 in (57 mm × 127 mm) bore × stroke, flat twin four-stroke engine (with magneto ignition replaced by coil and battery) equipped with rotary valves and a float-fed carburettor ...