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Baltimore & Ohio class O “Old Maude”
The name “Old Maude” refers to a mule in a comic, but also the first large Mallet in the USA built for standard gauge . Its job was as a helper for heavy trains on inclines, what didn't require high speeds. This meant...
| Baltimore & Ohio class O “Old Maude”Remove | |
|---|---|
| Variant | Standard |
| Built | 1904 |
| Manufacturers | ALCO |
| Wheel arrangement | CC ma |
| Gauge | 1435 mm |
| Length | |
| Service mass | 151756 kg |
| Top speed | 34 km/h |
| Power | |
| Engine |
General
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Built | 1904 |
| Manufacturers | ALCO |
| Wheel arrangement | 0-6-6-0 (Erie) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Wheelbase | 9.35 m |
| Service mass | 151.8 t |
| Adhesion mass | 151.8 t |
| Rigid wheelbase | 3.05 m |
| Axle load | 216.6 t |
| Water capacity | 26,498 l |
| Fuel capacity | 11.8 t (coal) |
Boiler
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Grate area | 6.708 m² |
| Firebox surface | 20.383 m² |
| Tube heating surface | 498.574 m² |
| Evaporative heating surface | 518.957 m² |
| Total heating surface | 519.0 m² |
Power plant
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Driver diameter | 1,422 mm |
| Boiler pressure | 16.2 bar |
| Expansion type | compound |
| Cylinders | four, HP: 508 x 813 mm and LP: 813 x 813 mm |
Power
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,491 kW (2,027 PS) |
| Top speed | 34 km/h |
| Starting effort | 292.1 kN |
| Starting effort simple | 350.5 kN |
Calculated values
| Property | Baltimore & Ohio class O “Old Maude” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 5.10 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 9.8 kW/t |
| Heating Surface Equivalent | 620.9 m² |
| Cylinder volume/HSE | 1 : 1,209.94 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 11.76 |
| Grate area/Heating surface | 1 : 77.36 |
| Firebox/Tube surface | 1 : 24.46 |
