NSB 2-8-0 Locomotives in Norway


Class Details by Steve Llanso of Sweat House Media

Class 343 (Locobase 14385)

Data from DeGolyer, Vol 60, pp. 33. See also Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004). Works number was 45955 in July 1917.

Locobase 2775 describes a later batch of Baldwin Consolidations with slightly larger boilers. This one engine appears to have hewn more closely to the original Norwegian design and provided a benchmark for the later set. This predecessor had smaller diameter tubes and one less flue than the 1919 locomotives, but also had the 9 1/2" (241 mm) piston valves.


Class Class 17 (Locobase 6158)

Data from:

DeGolyer, Volume 21, p.247; Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004). Works number was 16203 in September 1898.

A single North American Consolidation supplied in 1898. Its operational career ran about three decades before it was withdrawn on 19 July 1928.


Class Class 19 (Locobase 9126)

Data from Maurice Demoulin, Locomotive Actuelle ... (Paris: Librairie Polytechnique Ch.Beranger, 1906).

Locobase cannot match this description, which is explicit and illustrated with a line drawing, with any of the classes described on Svein Sandos' Jernbane site -- [] (last accessed 26 January 2008)--(Later link: The Semaphore, accessed for link update 10 July 2022.)

Demoulin says that a German builder supplied these locomotives, although they match closely those of the 19a class (Locobase 6159) that came from SLM and Hamar. These were heavier than that batch..


Class Class 19a (Locobase 6159)

Data from "NSB type 19a" in Wikipedia at [], last accessed 9 November 2021 and Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004). See also

SLM supplied the first 6 of these in 1902 while Hamar delivered the last three in 1909-1910. The design showed substantial increases in power and size over earlier Consolidations.

This was in keeping with its service with the Ofotbanen (Malmbanen in Sweden), a private line linking the iron mines of Kiruna in Sweden with the port of Narvik and the northernmost railway in the world. (see [] - viewed 20 June 2004) for an English-language history of the line.) Construction of the 168-km (104 mi), completed in 1902, was difficult and dangerous, but delivered an immediate payoff when 960,000 tons of ore was shipped the first year.

Almost immediately, the line looked to electrification as a long-term solution to the demands on motive power. When that project was completed, the class was taken into the NSB. By that time, six had been simpled and superheated and were classed as 28b.

The last of these left service on 20 September 1960.


Class Class 22a (Locobase 6164)

Data from:

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).

Hamar supplied two of these Consolidations and Thune the other four from 1906 to 1908. The design followed the general principles of Norwegian freight locomotives in being a 2-cylinder cross-compound of modest dimensions. When superheated (see Locobase 6165), they had about the same power as a Class 24b.


Class Class 22b (Locobase 6165)

Data from:

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).

Superheating the Class 22a (Locobase 6165) resulted in this small, simple-expansion Consolidation. It's not clear in Locobase's limited comprehension of Norwegian whether all in the class were so converted, but it appears to have been so. What's disturbing about the data from Sando is the overwrought factors, particularly the very low factor of adhesion. One wonders if the operators squelched the boiler pressure after conversion -- the tables suggest not -- or limited the cutoff. Possibly they accepted the slipping penalty to achieve the high tractive effort on steep grades ...

The last of the class -- 191-- retired on 28 October 1958.


Class Class 24a (Locobase 1734)

Data from Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004); and Norwegian Railway Club (Norsk Jerbaneklubb) (originally websitewww.nj.no/~njk/cgi/rstock.cgi., later [], last accessed 6 October 2022.

Compound Consolidations built by Thune and Hamar, Norway that repeated the Class 22 design, but fitted with a larger cab. The lone Class 24a to get a superheater was designated 24d; see Locobase 1736.


Class Class 24b/c (Locobase 1735)

Data from Norwegian Railway Club (Norsk Jerbaneklubb) (originally websitewww.nj.no/~njk/cgi/rstock.cgi., later [], last accessed 6 October 2022. .See

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004)

[]

The 24bs were built by Thune while Sweden's NOHAB supplied the 3 24cs in 1919, the modelling site (20 June 2004) says that Thune built eight 24bs and that, despite their low maximum speed of 45 km/h (28 mph), were prized for their tractive power combined with a low axle loading. Must have been slippery devils. 24c engines repeated the design but added a feed water heater.


Class Class 24d (Locobase 1736)

When supplied with a superheater, the Class 24a became the Class 24d. See Norwegian Railway Club (Norsk Jerbaneklubb) website []

Data from:

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004)


Class Class 28a/28b (Locobase 6160)

Data from:

Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site [] (June 2004).

The last two Class 19s from SLM were delivered as simple-expansion, superheated locomotives in 1910. Sometime after that, 6 of the existing Class 19s were converted to the same power and boiler dimensions. The only differences were in engine weight (the new SLMs were slightly heavier) and adhesion weight (163-164 put 62,400 kg/137,568 lb on the drivers). Although placed in service on the Ofotbanen, that line's electrification led to their relocation to the Bergensbanen.

The last of these left service on 20 September 1960.


Class Class 33c (Locobase 2774)

Data from DeGolyer, Vol 60, pp. 38. See also Svein Sando's Railway Site [] (9 June 2004)--(Later link: The Semaphore, accessed for link update 10 July 2022.)--and the Jernbane (Iron Road) site http://jernbane.net (June 2004), and Roy V Wright (Ed.) 1922 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1922), p. 1006. Works numbers were 52124, 52154-52155, 52190, 52232-52233 in August 1919.

This was the last of the Consolidations built to a basic 1915 design; see Locobase 14385 for the first Baldwin with slightly smaller boiler tubes. Norwegian-designed, but US-built, these engines had remarkably high-pitched boilers showing plenty of daylight between the drivers and bottom of the barrel. Steam admission came through 9 1/2 inch (240 mm) piston valves.

The 33c worked on lines with maximum grades of 2% at a maximum speed of 45 km/h (28 mph).

Principal Dimensions by Steve Llanso of Sweat House Media

Class343Class 17Class 19Class 19aClass 22a
Locobase ID14385 6158 9126 6159 6164
RailroadNSBNSBNSBNSBNSB
CountryNorwayNorwayNorwayNorwayNorway
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class1196
Road Numbers34360151-156, 160-162141-5, 190-193
GaugeStdStdStdStdStd
Number Built1196
BuilderBaldwinBurnham, Williams & Coseveralseveral
Year19171898190619021906
Valve GearWalschaertStephensonWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.2012.75 / 3.89 9.27 / 2.83
Engine Wheelbase (ft / m)22.31 / 6.8020 / 6.1021.98 / 6.70
Ratio of driving wheelbase to overall engine wheelbase 0.62 0.64 0.42
Overall Wheelbase (engine & tender) (ft / m)41.56 / 12.6740.92 / 12.4745.93 / 1445.93 / 1444.95 / 13.70
Axle Loading (Maximum Weight per Axle) (lbs / kg)34,172 / 15,500
Weight on Drivers (lbs / kg)123,500 / 56,01972,312 / 32,800133,820136,686 / 62,000102,735 / 46,600
Engine Weight (lbs / kg)145,500 / 65,99884,216 / 38,200155,426 / 71,800157,741 / 71,550122,136 / 55,400
Tender Loaded Weight (lbs / kg)79,500 / 36,06155,116 / 25,00078,484 / 35,60078,484 / 35,60078,484 / 35,600
Total Engine and Tender Weight (lbs / kg)225,000 / 102,059139,332 / 63,200233,910 / 107,400236,225 / 107,150200,620 / 91,000
Tender Water Capacity (gals / ML)3960 / 152402 / 9.103960 / 153960 / 153960 / 15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4 3.40 / 3.10 4.40 / 4 4.40 / 4 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.5030 / 1556 / 2857 / 28.5043 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.16 / 124948 / 121949.20 / 125049.20 / 125049.20 / 1250
Boiler Pressure (psi / kPa)170 / 11.70182.70 / 12.60188.50 / 12.70188.50 / 13188.50 / 13
High Pressure Cylinders (dia x stroke) (in / mm)22.64" x 25.2" / 575x64016" x 24" / 406x61021.65" x 25.2" / 540x640 (1)21.65" x 25.2" / 550x640 (1)19.29" x 25.2" / 490x640 (1)
Low Pressure Cylinders (dia x stroke) (in / mm)27.56" x 25.2" / 820x640 (1)27.56" x 25.2" / 700x640 (1)28.74" x 25.2" / 730x640 (1)
Tractive Effort (lbs / kg)37,967 / 17221.5619,878 / 9016.5223,787 / 10789.6123,787 / 10789.6121,053 / 9549.49
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.25 3.64 5.63 5.75 4.88
Heating Ability
Tubes (number - dia) (in / mm)186 - 1.875" / 48142 - 2" / 51 / 50
Flues (number - dia) (in / mm)25 - 5" / 127
Flue/Tube length (ft / m)13 / 3.9612.25 / 3.73 / 4.25
Firebox Area (sq ft / m2)121 / 11.2494.47 / 8.78125.94 / 11.70
Grate Area (sq ft / m2)30 / 2.7915.92 / 1.4830.13 / 2.8030.14 / 2.8022.92 / 2.13
Evaporative Heating Surface (sq ft / m2)1743 / 161.931009 / 93.741912 / 177.701913 / 177.701402 / 130.30
Superheating Surface (sq ft / m2)360 / 33.44
Combined Heating Surface (sq ft / m2)2103 / 195.371009 / 93.741912 / 177.701913 / 177.701402 / 130.30
Evaporative Heating Surface/Cylinder Volume148.45180.66356.14356.33328.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation51002909568056814320
Same as above plus superheater percentage59672909568056814320
Same as above but substitute firebox area for grate area24,06717,26023,740
Power L1662938774518
Power MT473.34472.80291.48

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 22bClass 24aClass 24b/cClass 24dClass 28a/28b
Locobase ID6165 1734 1735 1736 6160
RailroadNSBNSBNSBNSBNSB
CountryNorwayNorwayNorwayNorwayNorway
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class661118
Road Numbers141-5, 190-193147-148,194-196,210221-22+151, 155-6, 160-164
GaugeStdStdStdStdStd
Number Built6112
BuilderseveralseveralseveralNSBseveral
Year1909190919091902
Valve GearWalschaertWalschaertWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.14 / 4.92
Engine Wheelbase (ft / m)24.34 / 7.42
Ratio of driving wheelbase to overall engine wheelbase 0.66
Overall Wheelbase (engine & tender) (ft / m) / 13.7045.44 / 13.8545.44 / 13.8545.44 / 13.8545.93 / 14
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)105,822 / 48,000103,397 / 46,900104,279 / 47,300104,940 / 47,600134,261 / 60,900
Engine Weight (lbs / kg)125,663 / 57,000122,797 / 55,700126,545 / 57,400125,002 / 56,700155,426 / 70,500
Tender Loaded Weight (lbs / kg)78,484 / 35,60078,484 / 35,60078,484 / 35,60078,484 / 35,60085,098 / 38,600
Total Engine and Tender Weight (lbs / kg)204,147 / 92,600201,281 / 91,300205,029 / 93,000203,486 / 92,300240,524 / 109,100
Tender Water Capacity (gals / ML)3960 / 153960 / 153960 / 153960 / 153960 / 15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4 4.40 / 4 4.40 / 4 4.40 / 4 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)44 / 2243 / 21.5043 / 21.5044 / 2256 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 125049.20 / 125049.20 / 125049.20 / 125049.20 / 1250
Boiler Pressure (psi / kPa)188.50 / 13185.60 / 12.80185.60 / 12.80185 / 12.80174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)22.44" x 25.2" / 570x64019.29" x 25.2" / 490x640 (1)21.26" x 25.2" / 540x64019.29" x 25.2" / 490x640 (1)23.62" x 25.2" / 600x640
Low Pressure Cylinders (dia x stroke) (in / mm)28.74" x 25.2" / 730x640 (1)28.74" x 25.2" / 730x640 (1)
Tractive Effort (lbs / kg)41,325 / 18744.7320,729 / 9402.5336,522 / 16566.1220,662 / 9372.1442,263 / 19170.20
Factor of Adhesion (Weight on Drivers/Tractive Effort) 2.56 4.99 2.86 5.08 3.18
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)22.92 / 2.1322.93 / 2.1322.93 / 2.1322.90 / 2.1330.13 / 2.80
Evaporative Heating Surface (sq ft / m2)1165 / 108.301403 / 130.301166 / 108.301206 / 112.081619 / 150.50
Superheating Surface (sq ft / m2)391 / 36.30391 / 36.30455 / 42.29493 / 45.80
Combined Heating Surface (sq ft / m2)1556 / 144.601403 / 130.301557 / 144.601661 / 154.372112 / 196.30
Evaporative Heating Surface/Cylinder Volume101.00329.19112.61282.97126.68
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation43204256425642375243
Same as above plus superheater percentage54014256532053806448
Same as above but substitute firebox area for grate area
Power L1
Power MT

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 33c
Locobase ID2774
RailroadNSB
CountryNorway
Whyte2-8-0
Number in Class6
Road Numbers391-6
GaugeStd
Number Built6
BuilderBaldwin
Year1919
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.20
Engine Wheelbase (ft / m)22.31 / 6.80
Ratio of driving wheelbase to overall engine wheelbase 0.62
Overall Wheelbase (engine & tender) (ft / m)46.82 / 14.27
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)122,577 / 55,600
Engine Weight (lbs / kg)145,500 / 65,998
Tender Loaded Weight (lbs / kg)79,500 / 36,061
Total Engine and Tender Weight (lbs / kg)225,000 / 102,059
Tender Water Capacity (gals / ML)3960 / 15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)49.20 / 1250
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)22.64" x 25.2" / 575x640
Tractive Effort (lbs / kg)38,829 / 17612.56
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.16
Heating Ability
Tubes (number - dia) (in / mm)180 - 2" / 51
Flues (number - dia) (in / mm)26 - 5.375" / 137
Flue/Tube length (ft / m)13 / 3.96
Firebox Area (sq ft / m2)131 / 12.17
Grate Area (sq ft / m2)31.70 / 2.95
Evaporative Heating Surface (sq ft / m2)1820 / 169.08
Superheating Surface (sq ft / m2)384 / 35.67
Combined Heating Surface (sq ft / m2)2204 / 204.75
Evaporative Heating Surface/Cylinder Volume155.00
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5516
Same as above plus superheater percentage6453
Same as above but substitute firebox area for grate area26,669
Power L17207
Power MT518.49

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