Data from Litt. L21, one of a series of SJ locomotive diagrams archived by Anders Lundbing on [], last accessed 10 June 2017 and Tommy Nilsson's Svenska-lok.se website at Svenska-lok.se, last accessed 20 July 2018.
The four Moguls shown in this entry were originally produced with saturated boilers in 1900 by Nohab (works numbers were 563-566). The Ostra Skanes Railways (OSJ) put in them in Class G and assigned road numbers 14-17. The OSJ used them on the main line between Kristianstad and Eslov in the southern tip of Sweden. (The main line headed slightly northwest out of Kristianstadt to Hassleholm, then southwest to Eslov, located not far from Malmo on the coast.) Boiler pressure was set at 9.8 bar (142 psi).
Over the years, the OSJ took the original design, superheated the boiler and enlarged the cylinders to the Mogul standard 410 x 610 mm while keeping the inside motion. The first two locomotives kept their slide valves but the last two were fitted with piston valves. The Christianstadt-Hassleholm (CHJ) renumbered the quartet 37-40. By this time, their maximum speed was 75 kph (47 mph).
All four engines were taken into the Statens Jarnvagar in 1944 and redesignated L21. The 1669 was retired in 1948. The other three served into the 1960s, 1670 working longest before being retired in 1967. 1668 was preserved for display at the Kristianstadt Railway Museum.
(Inside tube and flue diameters yielded led to a tube heating surface area of 56.20 sq m (605 sq ft) and evaporative heating surface area of 64.15 sq m (690 sq ft))
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | L21 |
Locobase ID | 20405 |
Railroad | Ostra Skanes (OSJ)/Statens Jarnvagar (SJ) |
Country | Sweden |
Whyte | 2-6-0 |
Number in Class | 4 |
Road Numbers | 34-37/1667-1670 |
Gauge | Std |
Number Built | 4 |
Builder | Nohab |
Year | |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 13.62 / 4.15 |
Engine Wheelbase (ft / m) | 20.01 / 6.10 |
Ratio of driving wheelbase to overall engine wheelbase | 0.68 |
Overall Wheelbase (engine & tender) (ft / m) | 36.55 / 11.14 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 21,870 / 9920 |
Weight on Drivers (lbs / kg) | 62,611 / 28,400 |
Engine Weight (lbs / kg) | 75,663 / 34,320 |
Tender Loaded Weight (lbs / kg) | 46,892 / 21,270 |
Total Engine and Tender Weight (lbs / kg) | 122,555 / 55,590 |
Tender Water Capacity (gals / ML) | 2376 / 9 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.30 / 2 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 35 / 17.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 60.20 / 1530 |
Boiler Pressure (psi / kPa) | 156.60 / 1080 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16.14" x 24.02" / 410x610 |
Tractive Effort (lbs / kg) | 13,835 / 6275.46 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.53 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 95 - 1.89" / 48 |
Flues (number - dia) (in / mm) | 15 - 5" / 127 |
Flue/Tube length (ft / m) | 10.01 / 3.05 |
Firebox Area (sq ft / m2) | 85.57 / 7.95 |
Grate Area (sq ft / m2) | 14.75 / 1.37 |
Evaporative Heating Surface (sq ft / m2) | 753 / 69.95 |
Superheating Surface (sq ft / m2) | 197 / 18.30 |
Combined Heating Surface (sq ft / m2) | 950 / 88.25 |
Evaporative Heating Surface/Cylinder Volume | 132.38 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2310 |
Same as above plus superheater percentage | 2795 |
Same as above but substitute firebox area for grate area | 16,214 |
Power L1 | 8160 |
Power MT | 861.97 |