Funicular

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Duquesne Incline, Pittsburgh, Pennsylvania with full length parallel tracks

A funicular [etimology: Latin, funiculus, thin rope, a diminutive of funis, rope.] also called funicular railway, inclined railway, inclined plane, or, in the United Kingdom, a cliff railway, is a type of self-contained cable railway in which cables attached to a tram-like vehicle on rails move it up and down a very steep slope.

Image:Angels Flight.jpg

The theory of operation is derived from the fastening of two cars to either end of a cable and alternately making them ascend and descend an incline of railway tracks. In this configuration the cars, especially if transporting like loads, usually riders, are counterbalanced creating an efficiency of lift effort.

The usual engineering practice is to splice the cable ends together thereby creating a continuous cable loop. The cars are attached equidistantly at opposite points on the cable loop. The cable is driven by any means of winching at one end of the run, and held taught by a tensioning wheel at the other. Other sheeve wheels are employed to guide the cable to and from the drive mechanism and the incline cars. Locomotion is created by alternately reversing the direction of the drive mechanism so that the cars switch positions on the incline, that is, one up and one down.

In some cases, such as on the Duquesne Incline in Pittsburgh, Pennsylvania, there are parallel sets of tracks and platforms for each vehicle. The wheels of the cars are usually single flanged resembling those on standard railway vehicles.

The four-railed funicular was a standard up until the 1890’s when Professor T. S. C. Lowe, builder of the Mount Lowe Railway, devised a passing track configuration by which the inboard wheels of the cars shared a common center rail except at the passing point (center of the funicular) where the rails divided into two sets and were rejoined after the cars could clear each other. This three-railed configuration became the new world wide standard.

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Cars used with a three-railed configuration have flanges on both sides of the outboard wheels which keeps them aligned with the outer rail thus holding each car in position. The inboard wheels are typically unflanged and ride on top of the opposite rail thereby easily crossing over the rails at the passing track juncture.

Angels Flight funicular in Los Angeles employs the three-rail configuration, also called a gantlet or gauntlet track. Angels Flight uses separate cables for each car which are powered from a geared mechanism rather than using a single cable attached at each end to the cars.

1 History
2 Funiculars of the world
- 2.1 Cities with funicular transport system
3 Notes
4 Gallery
5 External links
6 See also

[edit] History

Image:Greatincline.png

The Great Incline funicular of the Mount Lowe Railway (1893 - 1938). Arrow denotes location of ascending car on the Macpherson Trestle. Grade: 62%.

The earliest such railways were water-driven, allowing barge traffic of canals to ascend and descend steep hills. They were used primarily in the early 19th century, especially during the height of the canal-building era in the 1830s in the United States.

Such railways operated by allowing water in feeder canals at the top of the plane to drive a turbine, raising or lowering a canal barge along a steep slope. Along level sections, the railroads essentially operated as standard towpath canals, with the barges typically drawn by horse or mule.

Examples of hydropower inclined plane railroads in the United States included the Allegheny Portage Railroad, part of the Pennsylvania Main Line Canal, built in 1834 with ten planes as the first railroad across the Allegheny Mountains of Pennsylvania. Similarly, the Morris Canal in New Jersey connected the Delaware River with the Passaic River using 23 planes, as well as a series of locks along the gentler gradients.

One of the most famous funiculars of its time was the Great Incline of the Mount Lowe Railway in Altadena, California, designed by Andrew Smith Hallidie of San Francisco cable car fame. The Mount Lowe Railway combined its funicular, for raising passengers 2,800 feet (859 m) up the steep side of Mount Echo (elev. 3500 ft or 1067 m), with two electric traction, narrow-gaged trolley systems on either end. The Incline hade three grade changes starting with the lower end at 62% and easing to a 48% grade at the top. The cars were designed to adjust to the grade changes for the comfort of their passengers. A particular feature of the Great Incline was the use of only the three rails borne out of the need to reduce the width of the grading on the incline. An added advantage was the reduction of materials even though a complicated cable routing system was needed in the passing track juncture.<ref>The Mount Lowe Railway was opened on July 4, 1893. By 1902 it was operated by Pacific Electric Railway. It ran along tracks built around the edges of the foothills arriving at a final destination Ye Alpine Tavern, only 1,100 ft (335 m) from the Mount Lowe summit. In 1936 the last of the standing buildings, the Tavern, was burned down, but the railway line was not abandoned until after the Los Angeles deluge of March 1938.</ref>

The funicular on Mount Vesuvius inspired the song Funiculì Funiculà written in 1880. That funicular was wrecked repeatedly by volcanic eruptions and finally abandoned after the eruption of 1944.

[edit] Funiculars of the world

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The world's steepest passenger railway is claimed as the Katoomba Scenic Railway, a funicular down the wall of the Jamison Valley near Katoomba, New South Wales, Australia, with maximum grade of 122% (that is, 52° from horizontal). [1]

The Great Incline of the Mount Lowe Railway (right) had multiple grades with cars that adjusted to the variations. The gentlest grade was 48%. The steepest was 62%.

Shortest funicular in the world is in Zagreb, Croatia. Track length is 66 meters (217 feet) with an elevation difference of 30 meters (98 feet).

Other funicular railways include the Peak Tram in Hong Kong, the Festungsbahn in Salzburg, the 600 meters (1969 feet) Taksim-Kabatas [2] in Istanbul, Turkey, the Lycabettus Hill funicular in Athens, Greece and the water-powered Lynton and Lynmouth Cliff Railway in North Devon, England.

[edit] Cities with funicular transport system

[edit] Notes

[edit] Gallery

Dockside funicular at Chongqing	These adjust for varying water levels	Funicular in Budapest, Hungary	Funicular cars passing on funicular railway on Cairn Gorm, Scotland
Another image of the funicular in Budapest	The mis-titled Wellington Cable Car, Wellington	The Ikoma Mountain, Japan funicular cars passing midway.	The Fourth Street Elevator in Dubuque, Iowa.