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A tram with a suspended articulation is a type of tram or streetcar architecture with one or more articulations being suspended. Here, articulations (i.e. permanent coupling) work like a hinge joint and are not supported by a bogie. This is unlike the more common solution with an articulation resting on a special connecting bogie, called jacobs ...
Trams have been used since the 19th century, and since then, there have been various uses and designs for trams around the world. This article covers the many design types, most notably the articulated, double-decker, drop-centre, low-floor, single ended, double-ended, rubber -tired, and tram-train; and the various uses of trams, both historical and current, most notably cargo trams, a dog car ...
Some articulated trams have bogies located under articulations, a setup referred to as a Jacobs bogie. Often, low-floor trams are fitted with nonpivoting bogies; many tramway enthusiasts see this as a retrograde step, as it leads to more wear of both track and wheels and also significantly reduces the speed at which a tram can round a curve. [11]
Multi-articulated trams:1 – S100, 2 – S105p,Short articulated trams: 3 – S109j, 4 – S111o, 5 – S110b. The multi-articulated S100 (prototype) and S105p (Poznań version) trams have five sections. Each odd-numbered section is supported by a two-axle bogie, while the even-numbered sections are suspended without bogies. The sections are ...
Trams with Jacobs bogies were not suitable for the partially narrow, curved radii in Freiburg, so a new type of tram was created. Freiburg's trams were based on the classic 1956 Duewag articulated tram. In contrast to conventional articulated trams, the centre of gravity of Freiburg's trams was not located at the Jacobs bogies but underneath ...
Jakobs bogie of the Pioneer Zephyr (CB&Q 9900, Budd 1934). The first fast train using this type of bogie was the German Fliegender Hamburger in 1932. In the United States, such configurations were used throughout the twentieth century with some success on early streamlined passenger trainsets, such as the Pioneer Zephyr in 1934, various Southern Pacific Daylight articulated cars, and Union ...
When the tram drives around a curve, the underframe prevents the body from overhanging the inside of the curve, allowing tighter clearances and more flexibility than a non-articulated tram. On all except the Neunkirchen vehicles only the inner axle on each bogie is powered, with two thirds of the vehicle's weight resting on the powered axles.
The trams are six-axle single-articulated double-ended cars, with four doors on each side. The low floor section stretches between both the outer doors through the articulation (which rests on an unpowered bogie). Between the outer door and each car end is a higher-floor section, accessed up a step and situated over the car's two power bogies.