page_title: KKS Class S
section_title: Specifications
hierarchical_section_title: KKS Class S / Specifications
caption_attribution_description: English: Kristiania Kommunale Sporveie tram in Egertorvet Norsk bokmål: Kristiania Kommunale Sporveie. Trikk motorvogn kommunal type S (Schuckert) og tilhenger kommunal type B (Busch) på Egertorget i Karl Johans gate. Spaserende.
context_page_description: Class S was a class of 20 twin-axle trams and 12 trailers built by Schuckert & Co. and Busch for Kristiania Kommunale Sporveie in 1899. The trams were originally 7.8 meters long and 2.0 meters wide. They featured wooden benches in the longitudinal direction seating twenty. The motor cars had two motors providing a combined power output of 51 kilowatts. The motor cars weighed 9.3 tonnes, while the trailers weighed 6.4 tonnes.
  Ownership of the class moved to Kristiania Sporveisselskab in 1904, when it bought KKS. The trams were variously rebuilt from 1918. One was converted to a snow plow, while three motor cars and three trailers were converted to cargo trams for hauling grain. The remaining units were rebuilt and lengthened in 1919 and 1920. The wheelbase was extended from 1.8 to 3.0 metres and the platform bays covered. A further rebuilding took place between 1921 and 1925, when they received new motors and undercarriages from Siemens Schuckertwerke. They passed on to Oslo Sporveier when it took over KSS in 1924. There the trams remained in service until 1967.
context_section_description: The trams and the trailers had identical bodies. They were 7.8 meters (26 ft) long and had a capacity for twenty passengers along two benches aligned along the width of the carriage. In their original configuration they featured outdoor bays, but this was removed in 1915. The cabin had two benches in the longitudinal direction, providing seating for 20 people. In addition there was standing space for 14 people in the motorized units and 20 in the trailers.
  Each motor car was equipped with two Schuckert AB71 two-pole serial motors, which each produced 25.5 kilowatts (34.2 hp). This gave a total power output of 51 kilowatts (68 hp). Controlling was carried out with two serial and three parallel contacts, as well as five for breaking. The resistance breaks worked poorly and thus manual breaking was used during ordinary operations. They were only equipped with primary suspension, which made the ride more uncomfortable.
  The modified units from 1919 received a lengthening, with longer and larger platform bays. This allowed standing capacity to rise to 48, although the cabin and the seating remained unaltered. The wheelbase increased to 3.0 meters (9.8 ft) and track brakes and secondary suspension was installed. In the 1922 modification they were further extended by 1 meter (3 ft 3 in), this time the cabin was lengthened and seating increased to 24 and the platform bays were rebuilt with walls. In their final, "Municipal HaWa" configuration, the trams were 11.2 meters (37 ft) long, weighed 15.9 tonnes (15.6 long tons; 17.5 short tons) and had a power output of 102 kilowatts (137 hp).
caption: Trams at Egertorvet in 1902
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