Data from Litt-A7, 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.) Works number was 1041 in 1914.
Locobase 20215 shows the P7 variant of a Swedish 4-6-0. Its differences from several other batches (more and longer tubes, longer flues, a valve gear variant) were repeated in this pair of Ten-wheelers. Piston valve diameter increased to 220 mm (8.66").
(NB: Locobase's specifications show the evaporative heating surface area using the tubes' outer diameter (i.e., the water side).
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | H3/A7 |
Locobase ID | 20216 |
Railroad | Dalslands (DJ)/Statens Jarnvagar |
Country | Sweden |
Whyte | 4-6-0 |
Number in Class | 2 |
Road Numbers | 10-11/1804-1805 |
Gauge | Std |
Number Built | 2 |
Builder | Nydqvist & Holm (NOHAB) |
Year | 1914 |
Valve Gear | Deeley |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 13.45 / 4.10 |
Engine Wheelbase (ft / m) | 27.72 / 8.45 |
Ratio of driving wheelbase to overall engine wheelbase | 0.49 |
Overall Wheelbase (engine & tender) (ft / m) | 46.16 / 14.07 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 27,558 / 13,000 |
Weight on Drivers (lbs / kg) | 85,098 / 39,000 |
Engine Weight (lbs / kg) | 133,600 / 60,400 |
Tender Loaded Weight (lbs / kg) | 74,075 / 33,600 |
Total Engine and Tender Weight (lbs / kg) | 207,675 / 94,000 |
Tender Water Capacity (gals / ML) | 3696 / 14 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 47 / 23.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 67.70 / 1720 |
Boiler Pressure (psi / kPa) | 171.10 / 1180 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20.08" x 24.02" / 510x610 |
Tractive Effort (lbs / kg) | 20,806 / 9437.45 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.09 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 143 - 2.008" / 51 |
Flues (number - dia) (in / mm) | 21 - 5" / 127 |
Flue/Tube length (ft / m) | 14.44 / 4.40 |
Firebox Area (sq ft / m2) | 136.70 / 12.70 |
Grate Area (sq ft / m2) | 27.99 / 2.60 |
Evaporative Heating Surface (sq ft / m2) | 1619 / 150.40 |
Superheating Surface (sq ft / m2) | 393 / 36.50 |
Combined Heating Surface (sq ft / m2) | 2012 / 186.90 |
Evaporative Heating Surface/Cylinder Volume | 183.90 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 4789 |
Same as above plus superheater percentage | 5747 |
Same as above but substitute firebox area for grate area | 28,067 |
Power L1 | 12,805 |
Power MT | 995.21 |