Data from [], last accessed 19 January 2017, (First viewed August 2002). Works numbers were 1865-1872 in 1882.
These had identical boilers and fireboxes to the 0-6-0 tender locomotives built by Esslingen a year earlier (Locobase 5123). The tank engine layout with leading truck was a big change however. These are listed as being in service until 1933.
Data from [], last accessed 19 January 2017, (First viewed August 2002) Works numbers were 332-335 in 1883.
Produced a year later than the Esslingen Mogul tanks (Locobase 5127), these held more water in their side tanks, which accounts for the weight difference in an otherwise identical design.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | Ca/Ec 3/4 | Ec 3/4 |
| Locobase ID | 5127 | 5128 |
| Railroad | Gotthardbahn | Gotthardbahn |
| Country | Switzerland | Switzerland |
| Whyte | 2-6-0T | 2-6-0T |
| Number in Class | 8 | 4 |
| Road Numbers | 181-188 | 189-192 |
| Gauge | Std | Std |
| Number Built | 8 | 4 |
| Builder | Esslingen | SLM |
| Year | 1882 | 1883 |
| Valve Gear | Heusinger | Heusinger |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 11.15 / 3.40 | 11.15 / 3.40 |
| Engine Wheelbase (ft / m) | 19.69 / 6 | 19.69 / 6 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | ||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 106,263 / 48,200 | 110,231 / 50,000 |
| Engine Weight (lbs / kg) | 133,380 / 60,500 | 138,009 / 62,600 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 1848 / 7 | 1954 / 7.40 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 | 2.80 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 59 / 29.50 | 61 / 30.50 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 53.10 / 1350 | 53.10 / 1350 |
| Boiler Pressure (psi / kPa) | 145 / 1000 | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.9" x 25.2" / 480x640 | 18.9" x 25.2" / 480x640 |
| Tractive Effort (lbs / kg) | 20,894 / 9477.37 | 20,894 / 9477.37 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.09 | 5.28 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 207 - 1.97" / 50 | 207 - 1.97" / 50 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 12.80 / 3.90 | 12.80 / 3.90 |
| Firebox Area (sq ft / m2) | 93.61 / 8.70 | 93.61 / 8.70 |
| Grate Area (sq ft / m2) | 19.37 / 1.80 | 19.37 / 1.80 |
| Evaporative Heating Surface (sq ft / m2) | 1459 / 135.60 | 1459 / 135.59 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 1459 / 135.60 | 1459 / 135.59 |
| Evaporative Heating Surface/Cylinder Volume | 178.30 | 178.30 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 2809 | 2809 |
| Same as above plus superheater percentage | 2809 | 2809 |
| Same as above but substitute firebox area for grate area | 13,573 | 13,573 |
| Power L1 | 3022 | 3022 |
| Power MT | 188.09 | 181.32 |