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Missouri-Kansas-Texas class H-3
The H-3 was a type of Pacific express locomotive introduced by the MKT in 1915. Compared to the H-2, the cylinder diameter had been increased from 24 to 25 inches, but the cylinder stroke and driver diameter remained ...
General
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Built | 1915 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Wheelbase | 10.47 m |
| Rigid wheelbase | 3.96 m |
| Total wheelbase | 21.11 m |
| Service weight | 123.4 t |
| Adhesive weight | 74.8 t |
| Total weight | 196 t |
| Water capacity | 30,283 l |
| Fuel capacity | 11.3 t (coal) |
Boiler
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Grate area | 5.342 m² |
| Firebox surface | 22.761 m² |
| Tube heating surface | 333.801 m² |
| Evaporative heating surface | 356.562 m² |
| Superheater surface | 80.826 m² |
| Total heating surface | 437.4 m² |
Power plant
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Driver diameter | 1,854 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 635 x 711 mm |
Power
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,641 kW (2,231 PS) |
| Starting effort | 181.3 kN |
Calculated values
| Property | Missouri-Kansas-Texas class H-3 Remove |
|---|---|
| Factor of adhesion | 1 : 4.05 |
| Optimal speed | 55 km/h |
| Power-to-weight ratio | 13.3 kW/t |
| Heating Surface Equivalent | 632.0 m² |
| Cylinder volume/HSE | 1 : 712.74 |
| Adhesive weight/Total | 1 : 1.65 |
| Tractive force/Heating surface | 1 : 8.66 |
| Grate area/Heating surface | 1 : 81.88 |
| Firebox/Tube surface | 1 : 14.67 |
| Total/Superheater | 1 : 4.41 |
