NHJ / NSB 2-8-2 Locomotives in Norway


Class Details by Steve Llanso of Sweat House Media

Class Class 48a (Locobase 6193)

Data from DeGolyer, Volume 60, pp. 48. 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 [] (originally June 2004, last accessed 30 January 2010). Works number was 45956 in July 1917.

A lone Mikado tank supplied to the Norsk-Hoved Jernbane in the same year as three other Baldwins went to the NSB. Compared to the latter quartet, this was a much bigger locomotive with greater boiler capacity, smaller drivers, and more power. Even so, the power generation system seems small for the work. Maximum speed was 45 km/h (28 mph) and minimum curve radii were 130 metres (426 feet).

After the NHJ stud's incorporation into the NSB in 1926, this locomotive continued in service until 16 Feb 1953, when it was retired.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassClass 48a
Locobase ID6193
RailroadNHJ / NSB
CountryNorway
Whyte2-8-2T
Number in Class1
Road Numbers99
GaugeStd
Number Built1
BuilderBaldwin
Year1917
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.20
Engine Wheelbase (ft / m)28.95 / 8.82
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)28.95 / 8.82
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)141,000 / 63,957
Engine Weight (lbs / kg)189,500 / 85,956
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)189,500 / 85,956
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
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)23" x 25.2" / 584x640
Tractive Effort (lbs / kg)40,074 / 18177.28
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.52
Heating Ability
Tubes (number - dia) (in / mm)157 - 2" / 51
Flues (number - dia) (in / mm)24 - 5.375" / 137
Flue/Tube length (ft / m)14.25 / 4.34
Firebox Area (sq ft / m2)121 / 11.24
Grate Area (sq ft / m2)31.30 / 2.91
Evaporative Heating Surface (sq ft / m2)1763 / 163.79
Superheating Surface (sq ft / m2)392 / 36.42
Combined Heating Surface (sq ft / m2)2155 / 200.21
Evaporative Heating Surface/Cylinder Volume145.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5446
Same as above plus superheater percentage6427
Same as above but substitute firebox area for grate area24,844
Power L16942
Power MT434.17

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