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The Shovelhead engine is a motorcycle engine that was produced by Harley-Davidson from 1966 to 1984, built as a successor to the previous Panhead engine. When the engine was first produced, the Shovelhead had a shallower combustion chamber, larger valve drop for both intake and exhaust, better porting, and stronger valves and pistons.
AJS racing motorcycle showing typical pre-unit construction engine and gearbox layout with mounting plates, slotted holes and screw-thread adjusters visible. Pre-unit construction, [1] also called separate construction, is a motorcycle engine architecture where the engine and gearbox are separate components with their own oil reservoirs, linked by a driving chain within a primary chaincase.
Engine Years Notes Model W: 33.4 cu in (548 cc) flathead flat-twin: 1919–1923 First of two H-D flat-twin motorcycle designs put into production, first H-D flathead motorcycle. The fork was a trailing link design. D-series (45 solo) 45.1 cu in (739 cc) flathead: 1929–1932 First H-D 45 cubic inch motorcycle, first H-D flathead V-twin motorcycle.
The engine is a two-cylinder, two-valve-per-cylinder, pushrod V-twin, made in both 61 c.i. (EL) and 74 c.i. (FL, FLH) displacements. The Panhead engine replaced the Knucklehead engine in 1948 and was manufactured until 1965 when it was replaced by the Shovelhead.
the primary chaincase can be lighter and more compact. the primary chaincase can be shorter, so that wheelbase may also be shorter. engine and transmission are now much more accurately aligned to each other in the frame, improving primary drive life. the engine is cleaner and fashionably modern in appearance (compared to earlier designs).
"Merry Christmas," Reid said, his voice muffled by his Santa beard. "I'm proud of you dudes. Proud of you. For the present, you get home-field advantage."
Harley-Davidson engines are now made at Harley-Davidson Motor Company's Pilgrim Road Powertrain Operations facility in Menomonee Falls, Wisconsin. The company's founders started making smaller flathead motorcycle engines individually by hand and fitted to bicycles in the 10 ft x 15 ft wooden barn in Milwaukee that was the Harley-Davidson ...
BMW and Yamaha Motor have invested in U.S.-based rare earths processing startup Phoenix Tailings, the latest move by manufacturers to boost production of the strategic metals outside of China.