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The earliest known use of a foot clutch and hand shifter, on motorcycles, was with the first multi-geared transmission on the 1915 Harley Davidson. [10] It is a mechanical linkage that is typically mounted to the left side of the motorbike's fuel tank and is held in place by a slotted piece of metal welded to the frame or the tank. [9]
A fuel tank (also called a petrol tank or gas tank) is a safe container for flammable fluids. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine system in which the fuel is stored and propelled (fuel pump) or released (pressurized gas) into an engine.
The XR1200 was the first Harley-Davidson to utilize Down Draft DDFI II fuel injection. To be released as a late 2006 model. Introduction of helical gears in transmission (2nd-5th). 2007 Fuel injection replaces carburetion on all models. 2008 front axle enlarged from 3/4 inch to 25 mm, rear axle decreased from 1 inch (25.4 mm) to 25 mm
A new single-piece counter shaft also contributes to the greater torque capacity and durability enhancements. Other features of the new TR-6060 transmission include: Reduced friction in the shifter system courtesy of a new cam and anti-friction plunger to control the side load shift detents.
The fuel tank on the V-Rod is located underneath the seat, placing the rider on top of it, rather than the usual frontal placement. The "tank" in this case is actually the cover for the air box and coolant fill port. Loosely based on the VR-1000 Superbike, Harley-Davidson built it as a platform for drag-racing competition machines.
Recirculating oil system introduced on all H-D engines in 1936, R became W to denote this. WLA and WLC were military models, WR was a racing model Servi-Car: 45.1 cu in (739 cc) flathead 1932–1936 (R-series engine) 1937–1973 (W-series engine) From 1964, the first Harley-Davidson to have electric starting. [2] Model K and KK
Harley-Davidson put several improvements in place during the 1920s, such as a new 74 cubic inch (1,212.6 cc) V-Twin introduced in 1921, and the "teardrop" gas tank in 1925. They added a front brake in 1928, although only on the J/JD models. [ 30 ]
The exhaust and intake flow capacity is increased by 50 percent over the Twin Cam models. Although weighing the same as its predecessor, both models of the Milwaukee-Eight increase in acceleration by 10% (0-60 for the 107 vs the 103) and 8% (0-60 for the 114 vs. the 110). Fuel economy is also increased, with percentages varying for engine and ...