Stockholm-Vasteras-Bergslagens 2-6-2 Locomotives in Sweden

Class Details by Steve Llanso of Sweat House Media

Class 17 (Locobase 10632)

Data from "Six-Coupled Bogie Tank Locomotive, Great Southern and Western Ry," The Locomotive Magazine, Volume XIII [13] (15 November 1907), p. 204.

Thomas George Betts, new locomotive superintendent of this railway, ordered a quartet of fast-accelerating tanks for the SVB's suburban service. It was a modern design with outside constant-lead radial valve gear actuating piston valves; however, the boiler was still not superheated.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10632
RailroadStockholm-Vasteras-Bergslagens (SWB)
Number in Class4
Road Numbers17
Number Built4
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.14 / 3.70
Engine Wheelbase (ft / m)26.57 / 8.10
Ratio of driving wheelbase to overall engine wheelbase 0.46
Overall Wheelbase (engine & tender) (ft / m)26.57 / 8.10
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)82,321 / 37,340
Engine Weight (lbs / kg)118,831 / 53,901
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)118,831 / 53,901
Tender Water Capacity (gals / ML)1848 / 7
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.20 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)61 / 1550
Boiler Pressure (psi / kPa)156.60 / 10.80
High Pressure Cylinders (dia x stroke) (in / mm)17.72" x 22.83" / 450x580
Tractive Effort (lbs / kg)15,643 / 7095.55
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.26
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)95.76 / 8.90
Grate Area (sq ft / m2)18.83 / 1.75
Evaporative Heating Surface (sq ft / m2)1076 / 100
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1076 / 100
Evaporative Heating Surface/Cylinder Volume165.12
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2949
Same as above plus superheater percentage2949
Same as above but substitute firebox area for grate area14,996
Power L13799
Power MT305.22

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