Technical Description of First Systems
The first plant of this type, called Alpine express I, was built in 1991 in Saas Fee. In 1994, a further section - the Alpine express II - became operational, however, a continuous service of both sections is not possible.
The cabs of these plants have space for 30 persons and travel with a speed of 6 m/s pulled by an endless hauling cable, and suspended from two carrying cables.
A lane thus consists of three cables (from which the system takes its name). As with most rotating cabin cableways, gondolas are detachable from the cables in order to allow easy disembarkation without disrupting the transit of other cars on the system. The system offers the following advantages over less sophisticated aerial cable-driven transportation systems:
- lower energy consumption compared with to-and-from system aerial ropeways of similar capacity
- increased wind stability
- larger ground distances possible
- high driving speed in relation to unity express orbits: Speeds over 7 m/s are possible
- high passenger capacity
Development and building of the Alpine express I cost 70 million SFr. The company of Roll built no more further 3S Aerial Tramway after the two systems in Saas Fee. By the assumption of the company by the Austrian company Doppelmayr in 1996, Doppelmayr attained the know-how for the 3S-Bahn-Bau. The Italian company Leitner has also developed a 3S cable car system in the meantime.
Read more about this topic: 3S Cable Car
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