Data from []
These were small six-coupled tanks that operated on the relatively flat Interlaken-Meiringen and Giswil-Lucerne sections. That the ten loks had SLM works numbers 475-476 (1887), 496-498 (1888), 584 (1889), 880 (1894), 1089 (1898), and 1342-1343 (1901) shows over how long a period the class was acquired. The Chemin de fer BiFre-Apples-Morges (BAM) bought three more from the same batch that delivered the 306 to the JBL. In 1903, the SLM delivered two more to the Montreux-Oberland Bernois-Bahn (MOB). These had smaller drivers
By 1905, they were being superseded by G 3/4s. The first three were retired in 1911. K.u.K Hersverwaltung
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | G 3/3 |
| Locobase ID | 8047 |
| Railroad | Jura-Bern-Luzern-Bahn (JBL) |
| Country | Switzerland |
| Whyte | 0-6-0T |
| Number in Class | 10 |
| Road Numbers | 301-310 |
| Gauge | Metre |
| Number Built | 10 |
| Builder | SLM |
| Year | 1887 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.20 / 2.50 |
| Engine Wheelbase (ft / m) | 8.20 / 2.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 8.20 / 2.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 44,533 / 20,200 |
| Engine Weight (lbs / kg) | 44,533 / 20,200 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 686 / 2.60 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.60 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 41.30 / 1050 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12.2" x 18.9" / 310x480 |
| Tractive Effort (lbs / kg) | 10,074 / 4569.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.42 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.51 / 2.90 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 8.61 / 0.80 |
| Evaporative Heating Surface (sq ft / m2) | 607 / 56.40 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 607 / 56.40 |
| Evaporative Heating Surface/Cylinder Volume | 237.37 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1498 |
| Same as above plus superheater percentage | 1498 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |