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A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders are arranged in a V configuration and share a common crankshaft. The V-twin is widely associated with motorcycles, primarily installed longitudinally, though also transversely. They are also used in a variety of other land, air, and marine vehicles, as ...
Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines.
As with many even-firing engines with four or more cylinders, an even-firing four-cylinder engine is sometimes referred to as a "Screamer". A "long bang" inline 4 engine fires both pairs of cylinders in quick succession or simultaneously; the power delivery is identical to a parallel twin with a 180° crank and similar to a V-twin.
The first V engine, a two-cylinder V-twin, was designed by Wilhelm Maybach and used in the 1889 Daimler Stahlradwagen automobile. [1]The first V8 engine was produced in 1903, in the form of the Antoinette engine designed by Léon Levavasseur for racing boats and airplanes.
V-twin engines have the following characteristics: With a V angle of 90 degrees and offset crank pins, a V-twin engine can have perfect primary balance. If a shared crank pin is used (such as in a Ducati V-twin engine), the 360° crankshaft results in an uneven firing interval.
A straight-twin engine, also known as an inline-twin, vertical-twin, inline-2, or parallel-twin, is a two-cylinder piston engine whose cylinders are arranged in a line along a common crankshaft. Straight-twin engines are primarily used in motorcycles; other uses include automobiles, marine vessels, snowmobiles, jet skis, all-terrain vehicles ...
However, the 180° disposition of the end and middle crank throws does result in a primary (crank speed) rocking couple, which in the 90° V case can be countered by weighting the crankshaft appropriately, much like a V-Twin. [2] Other V-angles generally require a balancer shaft to keep things as smooth. Because of the heavy counterweights on ...
The 1995-1999 VT1100C2 ACE and 1998-2001 VT1100C3 Aero models are single crank-pin models, all other 1100s are dual crankpin. The single crank pin model gave the engine a "loping idle" and more "rumble" in an attempt to mimic Harley-Davidson V-twins. It also lost about 10 horsepower (7.5 kW) and around 10 ft lbs of torque compared to the dual ...
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