SL79

SL79
SL79
In service	1982–present
Manufacturer	Duewag (25); ABB (15);
Built at	Duewag (10); Strømmen (30);
Replaced	Gullfisk
Constructed	1982–1990
Number built	40
Number in service	39
Number scrapped	1
Fleet numbers	101–140
Capacity	137
Operators	Sporveien Trikken
Depots	Grefsen, Holtet
Lines served	11, 12
Specifications
Car body construction	Steel
Car length	22.4 m (73 ft 6 in)
Width	2.5 m (8 ft 2 in)
Height	3,411 mm (11 ft 2.3 in)
Floor height	880 mm (35 in)
Entry	3-step stairs
Doors	4
Wheel diameter	680 mm (27 in)
Maximum speed	80 km/h (50 mph)
Weight	32.8 t (32.3 long tons; 36.2 short tons)
Traction system	Thyristor chopper control
Traction motors	2 × NEBB 4ELO 2054B 217 kW (291 hp)
Power output	434 kW (582 hp)
Acceleration	1.3 m/s2 (4.3 ft/s2)
Deceleration	1.3 m/s2 (4.3 ft/s2)
Electric system(s)	750 V DC overhead catenary
Current collector(s)	Pantograph
UIC classification	B′+2′+B′
Braking system(s)	Regenerative and disc brakes
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

SL79 is a class of 40 articulated trams operated by the Oslo Tramway of Norway. The trams were a variation of the Duewag trams that had been developed by the German manufacturer since the 1950s. The six-axle vehicles are unidirectional with four doors on the right side. The trams can seat 77 passengers three and four abreast, with an additional 91 people able to stand. Power output is 434 kilowatts (582 hp), provided by two motors on the two end bogies, that supplement a central unpowered Jacobs bogie located under the articulation. The trams are 23.0 metres (75.5 ft) long and 2.5 metres (8 ft 2 in) wide. They are capable of 80 kilometres per hour (50 mph) and have standard gauge.

They were built in two series, the first of 25 units delivered in 1982–84, and the second of 15 units delivered in 1989–90. The first 10 units were built by Duewag, while the last 30 were built in Norway by Strømmen. They were numbered 101 through 140. The two series vary slightly in specifications. The trams were ordered in 1979 after the 1977 decision to not close the tramway, after the SM53 were finished delivered in 1958. The SL79 mainly serves on lines 11, 12 and 19. However, during rush hour, SL79 trams supplement SL95s on line 13. Except those with an advertising livery, the trams are painted a light blue.

The SL79 trams, along with the flawed SL95 trams is currently being replaced by SL18 trams between 2020 and 2024.^[3]^[4]

^ Cite error: The named reference First unit scrapped was invoked but never defined (see the help page).
^ "Norge -> Sporvogner -> Oslo: SL79/I | Jernbane.net". Archived from the original on 2021-04-19. Retrieved 2021-11-07.
^ "Oslos nye trikker: Si hei til SL18! (Oslo's new trams: say hello to SL18!)". Fremtidens Byreise (in Norwegian). Archived from the original on 12 June 2018. Retrieved 11 June 2018.
^ Eggesvik, Olav; Mellingsæter, Hanne. "Oslo skal kjøpe 87 Spania-trikker til mer enn fire milliarder (Oslo will purchase 87 Spanish trams for more than 4 billion NOK)". Aftenposten (in Norwegian). Archived from the original on 11 June 2018. Retrieved 11 June 2018.

[First_unit_scrapped-1] Cite error: The named reference First unit scrapped was invoked but never defined (see the help page).

[2] "Norge -> Sporvogner -> Oslo: SL79/I | Jernbane.net". Archived from the original on 2021-04-19. Retrieved 2021-11-07.

[New_trams-3] "Oslos nye trikker: Si hei til SL18! (Oslo's new trams: say hello to SL18!)". Fremtidens Byreise (in Norwegian). Archived from the original on 12 June 2018. Retrieved 11 June 2018.

[New_trams_2-4] Eggesvik, Olav; Mellingsæter, Hanne. "Oslo skal kjøpe 87 Spania-trikker til mer enn fire milliarder (Oslo will purchase 87 Spanish trams for more than 4 billion NOK)". Aftenposten (in Norwegian). Archived from the original on 11 June 2018. Retrieved 11 June 2018.

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