Data from Gustav Reder (Michael Reynolds, trans), The world of steam locomotives (New York: Putnam, 1974), pl 329; supplemented by SACM diagram UG Type 178 from Elsassische Maschinenbau AG from locomotive book supplied by Dany Machi at [] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007). Works number was 4738
Reder cited this engine as an example of the early application of the Mallet layout on a narrow-gauge rail line.
The Z&T ran in the Black Forest and Grafenstaden supplied this Mallet design in 1896. According to the Todtnauer website -- [], last accessed 24 October 2006 -- the Z&T operated the 103 until 1955, when it was sold to the M.E.G. Stammbahn in Schwarzach. It was scrapped in 1960.
NB: the heating surface area in the diagram is calculated from the fire side. Water-side area would be 491 sq ft (45.6 sq m).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 103 |
| Locobase ID | 3255 |
| Railroad | Zell-und-Todtnau |
| Country | Germany |
| Whyte | 0-4-4-0T |
| Number in Class | 1 |
| Road Numbers | 103 |
| Gauge | Metre |
| Number Built | 1 |
| Builder | Grafenstaden |
| Year | 1896 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 3.77 / 1.15 |
| Engine Wheelbase (ft / m) | 13.12 / 4 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.29 |
| Overall Wheelbase (engine & tender) (ft / m) | 13.12 / 4 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 61,443 / 27,870 |
| Engine Weight (lbs / kg) | 61,443 / 27,870 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1056 / 4 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 26 / 13 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 35.40 / 900 |
| Boiler Pressure (psi / kPa) | 179.80 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9.84" x 17.72" / 250x450 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 17.72" / 380x450 |
| Tractive Effort (lbs / kg) | 10,341 / 4690.60 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.94 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 89 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.83 / 3.30 |
| Firebox Area (sq ft / m2) | 44.35 / 4.12 |
| Grate Area (sq ft / m2) | 8.07 / 0.75 |
| Evaporative Heating Surface (sq ft / m2) | 452 / 41.95 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 452 / 41.95 |
| Evaporative Heating Surface/Cylinder Volume | 289.81 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1451 |
| Same as above plus superheater percentage | 1451 |
| Same as above but substitute firebox area for grate area | 7974 |
| Power L1 | 1983 |
| Power MT | 284.61 |