Home

Classifieds

Place Classifieds

AutoFind

Want Ads

My Account

 
 
 
 

About The V-Twin Engine

If you are a chopper lover then you are probably familiar with the v-twin engine. Do you know why the V Twin is named a V Twin?

The V Twin engine is a two-cylinder engine layout in which the cylinders form a "V". The V-Twin engine's pistons are aligned so that, if viewed along the line of the crankshaft, they appear to be in a V.

The V configuration reduces the overall engine length and weight compared to an equivalent straight engine (the straight engine or in-line engine is an internal-combustion engine with all cylinders aligned in one row.)

The v-twin configuration allows for optimum torque for a given displacement...POWER.

V twin engines can be mounted in the transversal position (the definition of 'transversal' is a line extending or lying across at right angles to the long axis.)

V twins on Harley Davidson Motorcycles are mounted in a parallel position.

The longitudinal V Twin (the definition of longitudinal is: lengthways, lengthwise) as seen on Moto-Guzzis and some Hondas is less common. This position is well adapted to its transmission shafting, but has the disadvantage of causing a torque reaction that tends to lean the motorcycle on the side.

The first V Twin was introduced in 1903, updated with two and three-speed gearboxes.

The longitudinal V Twin (the definition of longitudinal is: lengthways, lengthwise) as seen on Moto-Guzzis and some Hondas is less common. This position is well adapted to its transmission shafting, but has the disadvantage of causing a torque reaction that tends to lean the motorcycle on the side.

The Indian was one of the first US makers to offer a successful V Twin in 1907.

The most obvious configuration for a V Twin is a 90 angle, but other angles can be achieved like the 45 Harley-Davidson.


Here's how a V Twin engine works...

A normal two cylinder engine fires the pistons in such a way that one fires on the first revolution of the crankshaft, and the second one first on the second revolution.

The engines runs quite smooth under this design.

But a Harley engine has two pistons, and the crankshaft has only one pin (in the design above, which is a common design, there are two crank pins for the connecting rods which the pistons connect to), and both pistons are connected to it.

So the pistons fire almost at the same time. Whereas in the example above they fire at different intervals.

This gives the choppers, and most particularly the Harley Davidson V-twin its unique sound, throaty, in your gut...you know what I mean...

 

This vtwin motorcycle is one of the early versions at 90 degrees...

The V Twin engine is a two-cylinder engine layout in which the cylinders form a "V". The V-Twin engine's pistons are aligned so that, if viewed along the line of the crankshaft, they appear to be in a V.

As you probably know, the first choppers to come out with this engine were the Harleys, so we can easily say that the v-twin engine was born in the Harley Davidson's factories.

 

The Harley V Twin is generally credited to Bill Harley, who designed it in 1908 as H-D's Chief Engineer. He went to work on the design right after graduating from the University of Wisconsin in 1908. Those first Harley V-twin engines proved to be a failure. In 1910, the V-twin engine dropped from Harley Davidson's line.

But it was soon re-designed and appeared again in 1911.

V-tiwn's are not just for Harley's and Indian's. Many manufacturers use the configuration on their bikes: Suzuki, Kawasaki, Yamaha, Honda...all have V-twins.

 

 
.

Free Auctions4Bikers

American Iron Horse Choppers

Big Dog Motorcycles

Boss Hoss

Chopper Motorcycles

Confederate Cycles

HD Buell

HD FLHR Road King

HD FLHRCI Road King Classic

HD FLHRP Road King Police

HD FLHT Electra Glide

HD FLHTCU Ultra Classic

HD FLSTC Heritage Softail 

HD FLSTCI Heritage Softail 

HD FLSTF Fat Boy

HD FLSTN Heritage Nostalgia

HD FLSTS Heritage Springer

HD FLTC Tour Glide

HD FLTR Road Glide

HD FXDL Dyna Low Rider

HD FXDS Dyna Convertible

HD FXDWG Dyna Wide Glide

HD FXDX Dyna Super Glide

HD FXR Low Rider

HD FXSB Sturgis

HD FXST Softail Standard

HD FXSTB Night Train

HD FXSTC Softail Custom

HD FXSTD Softail Deuce

HD FXSTS Softail Springer

HD FXSTSB Bad Boy

HD Sportster 1200

HD Sportster 883

HD Sportster Iron Head

HD V Rod

Titan Motorcycles

Ultra Motorcycles

Yamaha Road Star

Yamaha Royal Star

.

GENERAL INFO

Fenders

Frames

Knuckle Head

Pan Head

Shovel Head

V Twin

Trailers

Metric Choppers

Harley History 1

Harley History 2

Heritage History

.

HELMET LAWS

Alabama Helmet Law

Alaska Helmet Law

Arizona Helmet Law

Arkansas Helmet Law

California Helmet Law

Colorado Helmet Law

Connecticut Helmet Law

Delaware Helmet Law

Florida Helmet Law

Georgia Helmet Law

Hawaii Helmet Law

Idaho Helmet Law

Illinois Helmet Law

Indiana Helmet Law

Iowa Helmet Law

Kansas Helmet Law

Kentucky Helmet Law

Louisiana Helmet Law

Maine Helmet Law

Maryland Helmet Law

Massachusetts Helmet Law

Michigan Helmet Law

Minnesota Helmet Law

Mississippi Helmet Law

Missouri Helmet Law

Montana Helmet Law

Nebraska Helmet Law

Nevada Helmet Law

New Hampshire Helmet Law

New Jersey Helmet Law

New Mexico Helmet Law

New York Helmet Law

North Carolina Helmet Law

North Dakota Helmet Law

Ohio Helmet Law

Oklahoma Helmet Law

Oregon Helmet Law

Pennsylvania Helmet Law

Rhode Island Helmet Law

South Carolina Helmet Law

South Dakota Helmet Law

Tennessee Helmet Law

Texas Helmet Law

Utah Helmet Law

Vermont Helmet Law

Virginia Helmet Law

Washington helmet Law

West Virginia Helmet Law

Wisconsin Helmet Law

Wyoming Helmet Law

 

Privacy Terms of use Services FAQ Articles Feedback Links Invite a Biker Friend Affiliates Contact
 

.

Copyright 2006 BikerMatchmaking.com - Violators will be beaten to death!