TSB / GTB / EZB 2-6-2 Locomotives in Switzerland
Class Details by Steve Llanso of Sweat House Media
Class Ec 3/5 (Locobase 8046)
Data from [
], accessed 31 December 2006. Works numbers were 1667-1669 in 1905, 1828-1830 in1907.
These six Prairie tanks were bought for three Swiss railways. Designed to run equally well in both directions, the design had a Bissel truck forward and an Adams radial truck under the firebox and tank.
41-42 (works # 1667-1668) went to the Thunerseebahn (TSB). The other engine in the batch of three (works #1669) and the first of the second trio (road numbers 43-44) delivered in 1907 (works #1828) operated first on the Gnrbetalbahn (GTB). 45 & 46 (works #1829-1830) went to the Erlenbach-Zweisimmen-Bahn (EZB). But the three Berne-area railways used the sixengines interchangeably.
After electrification in the 1920s, all six were sold to the Austrian State Railways (The BB+) as class 130 and went into shunting (switching) service. When Class 478 supplanted the 130s in 1928-1929, 130.03-04 (ex-GTB 43-44) were sold to the SteiermSrkischen Landesbahnen (StLB) where they operated until 1957 and 1965, respectively. The other 4 were retired and scrapped.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Ec 3/5 |
| Locobase ID | 8046 |
| Railroad | TSB / GTB / EZB |
| Country | Switzerland |
| Whyte | 2-6-2T |
| Number in Class | 6 |
| Road Numbers | 41-46 |
| Gauge | Std |
| Number Built | 6 |
| Builder | SLM |
| Year | 1905 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.83 / 3.30 |
| Engine Wheelbase (ft / m) | 24.61 / 7.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,455 / 12,000 |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 121,475 / 55,100 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2112 / 8 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.80 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1320 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.32" x 23.62" / 440x600 |
| Tractive Effort (lbs / kg) | 20,153 / 9141.26 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.47 / 3.80 |
| Firebox Area (sq ft / m2) | 81.78 / 7.60 |
| Grate Area (sq ft / m2) | 18.29 / 1.70 |
| Evaporative Heating Surface (sq ft / m2) | 1217 / 113.10 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1217 / 113.10 |
| Evaporative Heating Surface/Cylinder Volume | 188.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3182 |
| Same as above plus superheater percentage | 3182 |
| Same as above but substitute firebox area for grate area | 14,230 |
| Power L1 | 3807 |
| Power MT | |