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Chesapeake & Ohio classes H-1 to H-4
In 1911, ALCO-Richmond built 24 2-6-6-2 Mallets for the Chesapeake & Ohio which were designated class H-2. They had 56-inch drivers and were able to reach speeds of 45 mph . The firebox had a grate of 72.2 square feet...
| Chesapeake & Ohio classes H-1 to H-4Remove | |
|---|---|
| Variant | H-4 |
| Built | 1912-1918 |
| Manufacturers | ALCO |
| Wheel arrangement | (1C)C1 ma |
| Gauge | 1435 mm |
| Length | 30064 mm |
| Service mass | 197041 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Built | 1912-1918 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-6-6-2 (Mallet Mogul) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Length | 30.06 m |
| Wheelbase | 14.88 m |
| Total wheelbase | 26.41 m |
| Service mass | 197 t |
| Adhesion mass | 165.5 t |
| Total mass | 296.4 t |
| Rigid wheelbase | 3.05 m |
| Axle load | 28.3 t |
| Water capacity | 45,425 l |
| Fuel capacity | 13.6 t (coal) |
Boiler
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Grate area | 6.745 m² |
| Firebox surface | 34.374 m² |
| Tube heating surface | 420.944 m² |
| Evaporative heating surface | 455.318 m² |
| Superheater surface | 90.581 m² |
| Total heating surface | 545.9 m² |
Power plant
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Driver diameter | 1,429 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 559 x 813 mm and LP: 889 x 813 mm |
Power
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Power source | steam |
| Estimated power | 2,312 kW (3,143 PS) |
| Starting effort | 298.5 kN |
| Starting effort simple | 358.2 kN |
Calculated values
| Property | Chesapeake & Ohio classes H-1 to H-4H-4 |
|---|---|
| Factor of adhesion | 1 : 5.44 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 11.7 kW/t |
| Heating Surface Equivalent | 808.4 m² |
| Cylinder volume/HSE | 1 : 1,117.33 |
| Adhesive weight/Total | 1 : 1.19 |
| Tractive force/Heating surface | 1 : 11.42 |
| Grate area/Heating surface | 1 : 80.93 |
| Firebox/Tube surface | 1 : 12.25 |
| Total/Superheater | 1 : 5.03 |
