Unspecified 4-2-0 Locomotives in Denmark


Class Details by Steve Llanso of Sweat House Media

Class HC Oersted (Locobase 3964)

Data from WilliamBay, Danmarks Damplokomotiver (1977). Photos from the Danish Damplokomotiver hos DSB ([link]) show a stubby Crampton-type locomotive with outside Allan valve gear.


Class Skirner (Locobase 3962)

Data from William Bay, Danmarks Damplokomotiver (1977). Works numbers were 553-554 in 1854.

According to the Danish Damplokomotiver hos DSB ([link]), these two engines (Skirner and Vidar) were part of the Thor class of a year earlier. Bay divides them into two. Bay's Thor class would be made up of Thor, Njord, Baldur, and Fenris. Like all single-axle Cramptons, these engines has the single driver behind the firebox to keep the boiler pitched low.

Drivers in this pair stood a full 12" (305 mm) taller.


Class Thor (Locobase 3961)

Data from WilliamBay, Danmarks Damplokomotiver (1977). Works numbers were 555-556 in 1854 and 557-558 in 1855.

According to the Danish Damplokomotiver hos DSB ([link]), the Thors and the later Skirners could be seen as one class of Crampton-type locomotive.

Bay divides them into two. Bay's Thor class would be made up of Thor, Njord, Baldur, and Fenris. Like all single-axle Cramptons, these engines has the single driver behind the firebox to keep the boiler pitched low.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassHC OerstedSkirnerThor
Locobase ID3964 3962 3961
Railroad
CountryDenmarkDenmarkDenmark
Whyte4-2-04-2-04-2-0
Number in Class124
Road Numbers10-116-9
GaugeStdStdStd
Number Built124
BuilderEsslingenBorsigBorsig
Year185818551854
Valve GearAllan
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)13.65 / 4.16
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)32.12 / 9.79
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)21,728 / 985630,688 / 13,92029,568 / 13,412
Engine Weight (lbs / kg)50,624 / 22,96367,200 / 30,48165,408 / 29,669
Tender Loaded Weight (lbs / kg)21,728 / 985630,688 / 13,92029,568 / 13,412
Total Engine and Tender Weight (lbs / kg)72,352 / 32,81997,888 / 44,40194,976 / 43,081
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.40 / 3 3.40 / 3 3.40 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 1851 / 25.5049 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72 / 182972 / 182960 / 1524
Boiler Pressure (psi / kPa)101.50 / 700101.50 / 700101.50 / 700
High Pressure Cylinders (dia x stroke) (in / mm)15" x 24.09" / 381x61215" x 22" / 381x56015" x 22" / 381x560
Tractive Effort (lbs / kg)6495 / 2946.095931 / 2690.267118 / 3228.67
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.35 5.17 4.15
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.67 / 3.25
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)10.76 / 111.84 / 1.1011.84 / 1.10
Evaporative Heating Surface (sq ft / m2)1011 / 93.96890 / 82.71890 / 82.71
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1011 / 93.96890 / 82.71890 / 82.71
Evaporative Heating Surface/Cylinder Volume205.19197.79197.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation109212021202
Same as above plus superheater percentage109212021202
Same as above but substitute firebox area for grate area
Power L1
Power MT

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