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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 | rebuilt H-4a |
| Built | 1927 |
| Manufacturers | Cleveland |
| Wheel arrangement | (1C)C1 ma |
| Gauge | 1435 mm |
| Length | 27273 mm |
| Service mass | 204344 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Built | 1927 |
| Manufacturers | Cleveland |
| Wheel arrangement | 2-6-6-2 (Mallet Mogul) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Length | 27.27 m |
| Wheelbase | 14.88 m |
| Total wheelbase | 24.53 m |
| Service mass | 204.3 t |
| Adhesion mass | 171.9 t |
| Total mass | 289.2 t |
| Rigid wheelbase | 3.05 m |
| Axle load | 28.8 t |
| Water capacity | 34,069 l |
| Fuel capacity | 20 t (coal) |
Boiler
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Grate area | 6.745 m² |
| Firebox surface | 34.374 m² |
| Tube heating surface | 446.307 m² |
| Evaporative heating surface | 480.681 m² |
| Superheater surface | 202.157 m² |
| Total heating surface | 682.8 m² |
Power plant
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Driver diameter | 1,429 mm |
| Boiler pressure | 14.5 bar |
| Expansion type | simple expansion |
| Cylinders | four, 508 x 813 mm |
Power
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Power source | steam |
| Estimated power | 2,610 kW (3,549 PS) |
| Starting effort | 361.4 kN |
Calculated values
| Property | Chesapeake & Ohio classes H-1 to H-4rebuilt H-4a |
|---|---|
| Factor of adhesion | 1 : 4.67 |
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 12.8 kW/t |
| Heating Surface Equivalent | 1,056.9 m² |
| Cylinder volume/HSE | 1 : 623.51 |
| Adhesive weight/Total | 1 : 1.19 |
| Tractive force/Heating surface | 1 : 11.05 |
| Grate area/Heating surface | 1 : 101.24 |
| Firebox/Tube surface | 1 : 12.98 |
| Total/Superheater | 1 : 2.38 |
