Statens Jarnvagar 2-4-4 Locomotives in Sweden


Class Details by Steve Llanso of Sweat House Media

Class W2 (Locobase 20367)

Data from Litt W2 one of a series of SJ locomotive diagrams archived by Anders Lundbing on [], last accessed 10 June 2017 (Snabcon AB advertised its tools for mounting RJ45 connectors on bundled cables.) and Olavia Hokas's Swedish Steam website at [], first accessed 21 January 2006 (most recently 29 April 2018); and Tommy Nilsson's Svenska-lok.se website at Svenska-lok.se, last accessed 5 May 2018. Works numbers were 704-706 in 1923.

Nilsson says that the Oxelösund-Flen-Westmanlands (later TGOJ) bought eight of this wheel arrangement and that two more were bought by the Ystad - Eslövs JSrnvSg (YEJ 4, 5) and two by the Landskrona - Lund - Trelleborg (LLTJ). Locobase cannot confirm that all twelve used the same specifications. In any event the LLTJ sold one of its engines to the TGOJ and one to the Kalmar.

Ultimately the state railway (SJ) took over the KJ Sc 18 (1940) and YEJ's 4 and 5 (1941) and put them on lines serving Malmö - Ystad and Alvesta - Kalmar / Karlskrona.

1620 was retired first in 1962 followed by the other two in 1967.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassW2
Locobase ID20367
RailroadStatens Jarnvagar (SJ)
CountrySweden
Whyte2-4-4T
Number in Class3
Road Numbers1620-1622
GaugeStd
Number Built3
BuilderMotala
Year1923
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.56 / 2
Engine Wheelbase (ft / m)28.71 / 8.75
Ratio of driving wheelbase to overall engine wheelbase 0.23
Overall Wheelbase (engine & tender) (ft / m)28.71 / 8.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)29,762 / 13,500
Weight on Drivers (lbs / kg)59,525 / 27,000
Engine Weight (lbs / kg)141,096 / 64,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)141,096 / 64,000
Tender Water Capacity (gals / ML)2640 / 10
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)50 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)67.40 / 1712
Boiler Pressure (psi / kPa)156.60 / 10.80
High Pressure Cylinders (dia x stroke) (in / mm)18.11" x 23.62" / 460x600
Tractive Effort (lbs / kg)15,299 / 6939.52
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.89
Heating Ability
Tubes (number - dia) (in / mm)114 - 1.969" / 50
Flues (number - dia) (in / mm)18 - 4.646" / 118
Flue/Tube length (ft / m)11.48 / 3.50
Firebox Area (sq ft / m2)101.72 / 9.45
Grate Area (sq ft / m2)20.24 / 1.88
Evaporative Heating Surface (sq ft / m2)952 / 88.45
Superheating Surface (sq ft / m2)269 / 25
Combined Heating Surface (sq ft / m2)1221 / 113.45
Evaporative Heating Surface/Cylinder Volume135.19
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3170
Same as above plus superheater percentage3867
Same as above but substitute firebox area for grate area19,434
Power L19697
Power MT718.29

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