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Missouri-Kansas-Texas classes L-1a and L-1b
In 1913 and 1914, the MKT received 60 Mikados from ALCO-Brooks with Walschaerts valve gear, which were listed as class L-1a. Their Number was augmented in 1914 by ten more, which received Baker valve gear and were lis...
General
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Built | 1913-1914 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Wheelbase | 10.69 m |
| Rigid wheelbase | 5.03 m |
| Total wheelbase | 21.53 m |
| Service weight | 130.4 t |
| Adhesive weight | 97.3 t |
| Axle load | 24.3 t |
| Total weight | 207.3 t |
| Water capacity | 32,176 l |
| Fuel capacity | 12.7 t (coal) |
Boiler
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Grate area | 5.342 m² |
| Firebox surface | 23.226 m² |
| Tube heating surface | 313.827 m² |
| Evaporative heating surface | 337.053 m² |
| Superheater surface | 82.405 m² |
| Total heating surface | 419.5 m² |
Power plant
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Driver diameter | 1,549 mm |
| Boiler pressure | 12.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 673 x 762 mm |
Power
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Power source | steam |
| Estimated power | 1,566 kW (2,129 PS) |
| Starting effort | 241.6 kN |
Calculated values
| Property | Missouri-Kansas-Texas classes L-1a and L-1b as built |
|---|---|
| Factor of adhesion | 1 : 3.95 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 12.0 kW/t |
| Heating Surface Equivalent | 618.0 m² |
| Cylinder volume/HSE | 1 : 877.51 |
| Adhesive weight/Total | 1 : 1.34 |
| Tractive force/Heating surface | 1 : 12.03 |
| Grate area/Heating surface | 1 : 78.52 |
| Firebox/Tube surface | 1 : 13.51 |
| Total/Superheater | 1 : 4.09 |
