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Southern Pacific class M-6
The Southern Pacific class M-6, originally designated class EF, were Vauclain compound Moguls with drivers of 63 inches introduced in 1901. In the first year, Baldwin built 68 and 23 more were built between 1902 and 1...
General
| Property | Southern Pacific class M-6 as built |
|---|---|
| Built | 1901-1903, 1917-1918 |
| Manufacturers | Baldwin, Sacramento |
| Wheel arrangement | 2-6-0 (Mogul) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Southern Pacific class M-6 as built |
|---|---|
| Wheelbase | 7.21 m |
| Rigid wheelbase | 4.62 m |
| Service weight | 75.4 t |
| Adhesive weight | 65.4 t |
| Axle load | 21.8 t |
| Water capacity | 22,712 l |
Boiler
| Property | Southern Pacific class M-6 as built |
|---|---|
| Grate area | 4.599 m² |
| Firebox surface | 14.894 m² |
| Tube heating surface | 194.788 m² |
| Evaporative heating surface | 209.682 m² |
| Total heating surface | 209.7 m² |
Power plant
| Property | Southern Pacific class M-6 as built |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 394 x 711 mm and LP: 660 x 711 mm |
Power
| Property | Southern Pacific class M-6 as built |
|---|---|
| Power source | steam |
| Estimated power | 969 kW (1,317 PS) |
| Starting effort | 119.1 kN |
| Starting effort simple | 143.0 kN |
Calculated values
| Property | Southern Pacific class M-6 as built |
|---|---|
| Factor of adhesion | 1 : 5.38 |
| Optimal speed | 50 km/h |
| Power-to-weight ratio | 12.8 kW/t |
| Heating Surface Equivalent | 284.2 m² |
| Cylinder volume/HSE | 1 : 1,466.71 |
| Adhesive weight/Total | 1 : 1.15 |
| Tractive force/Heating surface | 1 : 11.87 |
| Grate area/Heating surface | 1 : 45.59 |
| Firebox/Tube surface | 1 : 13.08 |
