NSB BM87
Encyclopedia
NSB Class 87 is a class of 25 diesel-hydraulic railcar
s built by Strømmens Værksted
for the Norwegian State Railways
. Seventeen a-series units were delivered in 1941 and equipped with 93 kW Deutz
prime mover
. Eight b-series units were delivered in 1952 and equipped with 110 kW Scania Vabis prime movers. The trains weighed 15 and 15.5 t (14.8 and 15.3 ) and had a maximum speed of 75 and 80 km/h (46.6 and 49.7 ), respectively for the a and b-series. They were used on many branch lines until the 1960s, when the gradual electrification
caused most lines instead to be served with Class 86
. The a-series was scrapped in 1972 and 1973, while the b-series remained used between Ål
and Hønefoss
on the Bergen Line until 1975 and on the Flekkefjord Line
until 1981.
es for lines with little traffic. Seventeen units were delivered in 1941, and were originally numbered 18.265–281 and designated Class 7a. Another eight units, the b-series, were delivered in 1952 and numbered 18.301–308. The class was later renumbered Class 87. The trains were used both on mainline routes with little traffic and on branch lines. As the railway network
was gradually electrified during the 1950s and 1960s, the need for railcars dropped. Branch line service could easily be handled by the larger and more comfortable Class 86 and 91
, and from the late 1960s Class 87 was taken out of use. NSB attempted to sell the units, but as no-one was interested in purchasing them, they were scrapped in 1972 and 1973.
The b-series remained in service on the local service between Ål and Hønefoss on the Bergen Line, but was taken out of service in the mid-1970s. Also the Flekkefjord Line retained the b-series, which was used until 1981, when it was replaced with Class 89
. The last six trains were retired on 4 March 1981. No. 87-01 and 03 have been preserved by the Norwegian Railway Club.
Railcar
A railcar, in British English and Australian English, is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach , with a driver's cab at one or both ends. Some railways, e.g., the Great Western...
s built by Strømmens Værksted
Strømmens Værksted
Strømmens Værksted A/S was an industrial company based in Skedsmo, Norway, specializing in the production of rolling stock. Founded in 1873, it remains as a part of Bombardier Transportation...
for the Norwegian State Railways
Norwegian State Railways (1883–1996)
The Norwegian State Railways was a state-owned railway company that operated most of the railway network in Norway. The government agency was created in 1883 to oversee the construction and operation of all state-owned railways in Norway...
. Seventeen a-series units were delivered in 1941 and equipped with 93 kW Deutz
Deutz AG
Deutz AG is an engine manufacturer, based in Cologne, Germany.-History:The company was founded by Nikolaus Otto, inventor of the four-stroke internal combustion engine, in 1864 as N. A...
prime mover
Prime mover (locomotive)
In engineering, a prime mover is an engine that converts fuel to useful work. In locomotives, the prime mover is thus the source of power for its propulsion. The term is generally used when discussing any locomotive powered by an internal combustion engine...
. Eight b-series units were delivered in 1952 and equipped with 110 kW Scania Vabis prime movers. The trains weighed 15 and 15.5 t (14.8 and 15.3 ) and had a maximum speed of 75 and 80 km/h (46.6 and 49.7 ), respectively for the a and b-series. They were used on many branch lines until the 1960s, when the gradual electrification
Timeline of railway electrification in Norway
The Norwegian railway network consists of of electrified railway lines, constituting 62% of the Norwegian National Rail Administration's of line. The first three mainline systems to be electrified were private ore-hauling lines. The Thamshavn Line opened in 1909, and remained in revenue use until...
caused most lines instead to be served with Class 86
NSB Class 86
NSB Class 86 is a class of diesel-hydraulic multiple units built by Strømmens Værksted for the Norwegian State Railways . Thirty-eight motor cars and thirty-one trailers were built between 1937 and 1954, split between six subtypes designated a through f. Class 91 was a further delivery of ten...
. The a-series was scrapped in 1972 and 1973, while the b-series remained used between Ål
Ål
Ål is a municipality in Buskerud county, Norway. It is part of the traditional region of Hallingdal. The administrative centre of the municipality is the village of Ål....
and Hønefoss
Hønefoss
Hønefoss is a city in Buskerud county, Norway, and the center of the municipality of Ringerike.In 1852, Hønefoss received town status and was separated from Norderhov. Hønefoss celebrated its 150th year of township in 2002...
on the Bergen Line until 1975 and on the Flekkefjord Line
Flekkefjord Line
The Flekkefjord Line is a abandoned branch line to the Sørland Line. It ran between Sira and Flekkefjord in Vest-Agder, Norway. The only current activity on the line is tourist draisines. The station buildings along the line were designed by the architect Paul Armin Due—these have all been...
until 1981.
Specifications
Class 87 is a single-car railcar with seating for 46 people plus 11 folding seats. The cars have an overall length of 14.8 metres (48.6 ft) and a body length of 14 metres (45.9 ft). The class was equipped with a diesel-hydraulic transmission. The a-series is equipped with a Deutz A6M517 engine, which gives a power output of 93 kW. The b-series has a Scania Vabis D802 prime mover with a power output of 110 kW. The higher power gave the b-series a maximum speed of 80 kilometres per hour (49.7 mph), compared to the 75 kilometres per hour (46.6 mph) of the a-series. However, this also have the b-series a 15.5 tonnes (15.3 LT) weight, compared to the a-series 15 tonnes (14.8 LT).History
The class was ordered for NSB to have a class of smaller railbusRailbus
A railbus is a very lightweight type passenger rail vehicle that shares many aspects of their construction with a bus, usually having a bus, or modified bus body, and having four wheels on a fixed base, instead of on bogies...
es for lines with little traffic. Seventeen units were delivered in 1941, and were originally numbered 18.265–281 and designated Class 7a. Another eight units, the b-series, were delivered in 1952 and numbered 18.301–308. The class was later renumbered Class 87. The trains were used both on mainline routes with little traffic and on branch lines. As the railway network
Rail transport in Norway
The Norwegian railway system comprises 4,087 km of track of which 2,622 km is electrified and 242 km double track. There are 696 tunnels and 2760 bridges....
was gradually electrified during the 1950s and 1960s, the need for railcars dropped. Branch line service could easily be handled by the larger and more comfortable Class 86 and 91
NSB Class 86
NSB Class 86 is a class of diesel-hydraulic multiple units built by Strømmens Værksted for the Norwegian State Railways . Thirty-eight motor cars and thirty-one trailers were built between 1937 and 1954, split between six subtypes designated a through f. Class 91 was a further delivery of ten...
, and from the late 1960s Class 87 was taken out of use. NSB attempted to sell the units, but as no-one was interested in purchasing them, they were scrapped in 1972 and 1973.
The b-series remained in service on the local service between Ål and Hønefoss on the Bergen Line, but was taken out of service in the mid-1970s. Also the Flekkefjord Line retained the b-series, which was used until 1981, when it was replaced with Class 89
SJ Y6
Y6 was a series of diesel railcars operated by Statens Järnvägar of Sweden. 378 motor cars and 321 trailers were delivered between 1953-61 by Hägglund & Söner, Svenska Järnvägsverkstäderna, Kalmar Mekaniska Verkstad and Eksjöverken. They were used throughout the unelectrified Swedish rail network...
. The last six trains were retired on 4 March 1981. No. 87-01 and 03 have been preserved by the Norwegian Railway Club.