GB Class 3

GB Class 3 was a single tram and trailer built by Hønefoss Karosserifabrikk for Graakalbanen of Trondheim, Norway.

GB Class 3
In service	1955–1973
Manufacturer	Høka
Constructed	1955
Number built	1 tram 1 trailer
Number preserved	1
Fleet numbers	7 (tram) 55 (trailer)
Capacity	40 seats, later 36 seats
Operator(s)	Graakalbanen
Depot(s)	Munkvoll
Line(s) served	Gråkallen Line
Specifications
Car body construction	Wood
Car length	13.0 m (42.7 ft)
Width	2.6 m (8.5 ft)
Doors	4
Weight	16.8 t (16.5 long tons; 18.5 short tons)
Traction system	Siemens GBM 431, 4 off
Power output	240 kW (320 hp)
Electric system(s)	600 V DC
Current collection method	Pantograph
Track gauge	1,000 mm (3 ft 3 ^3⁄8 in)

Each of the four Siemens motors had an effect of 60 kW (80 hp). The trams were criticized for not having sufficient space for baby buggies. Despite running in part in city streets, the trams were 2.6 m (8.5 ft) wide. They had seating for 40, later 36, passengers.[1]

The tram were delivered in 1955. It remained in service until 1973, when it was replaced by the TS Class 7 trams, following the merger of Graakalbanen into Trondheim Trafikkselskap, and the subsequent reorganizing of routes, so the Gråkallen Line was operated onwards along the Lademoen Line. It is preserved as a heritage tram at Trondheim Tramway Museum.[2]

References

1. Kjenstad, Rune (1994). På skinner i Bymarka. Baneforlaget. pp. 80–81. ISBN 82-91448-01-9.
2. Kjenstad, Rune (2005). Trikken i Trondheim 100 år. Tapir Akademisk Forlag. pp. 359–60. ISBN 82-519-1895-2.