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Home > Harley-Davidson


 

Harley-Davidson is an American manufacturer of motorcycles. Harley-Davidson motorcycles are distinctive in design and attract a loyal following. Bikers who are not fans contend that the bikes are badly engineered, under-powered and under-performing, and have poor handling, mainly as a result of their American pedigree (designed for long, low-speed cruising on flat, straight roads.)

The Harley-Davidson Motor Company supplies many police forces with their motorcycle fleets.

1 The Harley-Davidson V-twin engine

The classic Harley-Davidson engines are two-cylinder, V-twin engines with the pistons placed at a 45 degree angle. The engine design, which is covered under several United States patents, produces the unique, signature throbbing sound of the Harley-Davidson power plant.

The crankshaft has a single pin, and both pistons are connected to this pin through their connecting rods. This design causes the pistons not to fire at even intervals.

The V-twin runs like this: The first piston fires. Then, the other piston fires at 315 degrees into the stroke. There is a 405-degree gap until ... the first piston fires again. This give the Harley-Davidson V-twin its unique pop-pop...pop-pop...pop-pop sound.

Harley Davidson Co endeavoured to file as a registered trade mark the distinctive sound of a Harley Davidson motorcycle engine. On 1 February 1994, the company filed an application for a sound trade mark: "The mark consists of the exhaust sound of applicant's motorcycles, produced by V-twin, common crankpin motorcycle engines when the goods are in use". Nine of Harley Davidson's competitors filed oppositions against the application, arguing that cruiser-style motorcycles of various brands use the same crankpin V-twin engine which produces the same sound. After six years of litigation, with no end in sight, in early 2000 Harley Davidson withdrew their application.


The early Harleys had experimental motors, but then came the following engine designs:

The Earliest Model The Big Twins The Sportsters New 60° Engine, water cooled


1.1 Models

Harley models initials can be extremely long, such as FLHRCI, and some combinations don't make sense. In gereral, though, the first letter is F (Big Twin) or X (Sportster), and the other intials include:

B (Belt Drive), C (Classic, or sometimes Custom), D (Dyna Glide), DG (Disk Glide), E (Electric-start), F (Fatboy), FI (Fuel-Injection), H (High-compression), L (Hydraglide big forks), LR (Low Rider), P (Police), S (Springer), SB (Single Belt final drive), ST (Soft Tail), T (Touring), WG (Wide Glide)

2 History

2.1 Founding of the Motor Company

The Harley-Davidson enterprise got off to a less than auspicious start in Milwaukee in 1901 when William Harley, 21 and Arthur Davidson, 20, built a prototype motorized bicycle. It was built in the Davidson garage, which measured only 10 by 15 ft (3 by 5 m). Once their prototype was functional, they were joined by Davidson's two brothers William and Walter.


In their first two years, they only managed to produce 3 motorcycles.

The Harley-Davidson Motor Company was officially founded on August 28, 1903, and they officially started production. They had made some pretty big changes from the early prototypes, including a redesigned frame. Still, the 1903 production was only 3 bikes.

In 1906 they built their first real building on Juneau Avenue, which is still the location of the company today. They had been ramping production up gradually, and with the new facilities they were able to produce 150 motorcycles in 1907, an important year in the life of the fledgling company. They began selling their motorcycles to police fleets, a tradition that continues today.

The early bikes had a single-piston engine. In 1909 a 45-degree V-Twin engine was introduced. The first V-Twin wasn't the powerhouse that it is today. It displaced only 49.6 cubic inches (810 cm³) and produced only 7 horsepower (5 kW). Still, that was double the power of the first bikes. The top speed was 60 mph (97 km/h), quite a speed in those days. Production was 1,149 motorcycles.

The success of the company had begun to attract attention, and Harley-Davidson had over 150 competitors by 1911.

By 1913 the original factory, which measured only 28 by 80 ft (9 by 24 m), had been expanded to a roomy 297,110 ft³ (28,000 m³). Despite the harsh competition, Harley-Davidson was already pulling ahead of the pack, completely dominating motorcycle racing. Production had swelled to 12,904 machines.



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