Data from "2/4 gek. Schnellzug-lokomotive fur normale Spurweite", Locomotiven, A Borsig (Tegel bei Berlin, 1898), archived on Historical Railway Images, Flickr, at [], p. 12, last accessed 8 July 2022. Works numbers were 3753-3758 in March 1881.
Data from users.libero.it/allesandro.tuzza/fonti/sfr/1879sfrindice.htm (8 July 2004), an 1878 album of locomotives for the SFR reproduced by Allesandro Tuzza. (later cite: [], Tavola 5)
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | 495 | 61 |
Locobase ID | 21044 | 6235 |
Railroad | Strade Ferrate Romane | Strade Ferrate Romane (SFR) |
Country | Italy | Italy |
Whyte | 4-4-0 | 4-4-0 |
Number in Class | 6 | 2 |
Road Numbers | 495-500 | 61-62 |
Gauge | Std | Std |
Number Built | 6 | 2 |
Builder | Borsig | Norris |
Year | 1882 | 1846 |
Valve Gear | Allan | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | ||
Engine Wheelbase (ft / m) | ||
Ratio of driving wheelbase to overall engine wheelbase | ||
Overall Wheelbase (engine & tender) (ft / m) | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 17,637 / 8000 | |
Weight on Drivers (lbs / kg) | 35,053 / 15,900 | |
Engine Weight (lbs / kg) | 87,523 / 39,700 | 48,171 / 21,850 |
Tender Loaded Weight (lbs / kg) | 52,911 / 24,000 | 32,298 / 14,650 |
Total Engine and Tender Weight (lbs / kg) | 140,434 / 63,700 | 80,469 / 36,500 |
Tender Water Capacity (gals / ML) | 2112 / 8 | 1241 / 4.70 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 29 / 14.50 | |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 72.80 / 1850 | 60.10 / 1527 |
Boiler Pressure (psi / kPa) | 145 / 10 | 87 / 6 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17.05" x 24.02" / 433x610 | 14" x 22" / 356x558 |
Tractive Effort (lbs / kg) | 11,822 / 5362.38 | 5306 / 2406.76 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.61 | |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 126 - 1.772" / 45 | |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 11.98 / 3.65 | |
Firebox Area (sq ft / m2) | 45.95 / 4.27 | |
Grate Area (sq ft / m2) | 21.64 / 2.01 | 9.47 / 0.88 |
Evaporative Heating Surface (sq ft / m2) | 980 / 91.06 | 761 / 70.73 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 980 / 91.06 | 761 / 70.73 |
Evaporative Heating Surface/Cylinder Volume | 154.39 | 194.15 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 3138 | 824 |
Same as above plus superheater percentage | 3138 | 824 |
Same as above but substitute firebox area for grate area | 3998 | |
Power L1 | 2203 | |
Power MT | 277.11 |