Statens Jarnvagar 4-8-0 Locomotives in Sweden


Class Details by Steve Llanso of Sweat House Media

Class E10 (Locobase 2472)

Data from Litt-E10, one of a series of SJ locomotive diagrams archived by Anders Lundbing on [], last accessed 10 June 2017. See also the Bergslagen Railway Society's page at , last accessed 2 June 2015. Works numbers were 2156-2165 in 1947.

This was a mixed-traffic Twelve-wheeler engine that was the last class of steam locomotives to be built for the Statens JSrnvSgar. It was built in 1947 to meet growing demand for freight power.

Based on the early-1930s sextet of E9 Twelve-wheelers (Locobase 20217), the E10s featured three-cylinder power, a unique solution for the SJ, roller bearings, slightly more firebox heating surface area, and enclosed cabs. All were delivered with smoke deflectors.

According to Svenska-Lok, converting some of the engines to oil-burning led to a couple of serious roundhouse fires.

Ten years after their introduction, the entire class was based at Oestersund. Distributed among several depots over the next decade, all ten remained in service through 1968

After their retirement from active service, several of the class were placed in a contingent reserve of 150 locomotives. Only four were scrapped; the other six were sold or donated to museums.

Running 1748, says the Bergslagen, is too expensive to undertake very often and the engine is too powerful for most of the museum's train runs. The oil fuel is "smelly" (Google's translation), but during periods of high fire danger, this engine was preferable to the coal burners in the collection. It was sold to the Landeryds museum in 2006.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassE10
Locobase ID2472
RailroadStatens Jarnvagar (SJ)
CountrySweden
Whyte4-8-0
Number in Class10
Road Numbers1739-1748
GaugeStd
Number Built10
BuilderNydqvist & Holm (NOHAB)
Year1947
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.24 / 4.95
Engine Wheelbase (ft / m)28.22 / 8.60
Ratio of driving wheelbase to overall engine wheelbase 0.58
Overall Wheelbase (engine & tender) (ft / m)47.57 / 14.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)28,219 / 12,800
Weight on Drivers (lbs / kg)111,995 / 50,800
Engine Weight (lbs / kg)163,583 / 74,200
Tender Loaded Weight (lbs / kg)92,594 / 42,000
Total Engine and Tender Weight (lbs / kg)256,177 / 116,200
Tender Water Capacity (gals / ML)4356 / 16.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 7.70 / 7
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55.10 / 1400
Boiler Pressure (psi / kPa)198.70 / 13.70
High Pressure Cylinders (dia x stroke) (in / mm)17.72" x 24.02" / 450x610 (3)
Tractive Effort (lbs / kg)34,678 / 15729.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.23
Heating Ability
Tubes (number - dia) (in / mm)125 - 1.89" / 48
Flues (number - dia) (in / mm)28 - 5.236" / 133
Flue/Tube length (ft / m)14.76 / 4.50
Firebox Area (sq ft / m2)139.93 / 13
Grate Area (sq ft / m2)30.14 / 2.80
Evaporative Heating Surface (sq ft / m2)1619 / 150.40
Superheating Surface (sq ft / m2)549 / 51
Combined Heating Surface (sq ft / m2)2168 / 201.40
Evaporative Heating Surface/Cylinder Volume157.43
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5989
Same as above plus superheater percentage7486
Same as above but substitute firebox area for grate area34,755
Power L112,881
Power MT1014.25

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