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Chicago, Indianapolis & Louisville (Monon) class J-4
In 1926, ALCO-Richmond built six Mikados for the Monon which were based on the USRA Light Mikado. But compared to this, the boiler and the cylinders got bigger, while the driver diameter was still 63 inches. They were...
| Chicago, Indianapolis & Louisville (Monon) class J-4Remove | |
|---|---|
| Variant | J-4 rebuilt |
| Built | 1929 |
| Manufacturers | ALCO |
| Wheel arrangement | 1D1 |
| Gauge | 1435 mm |
| Length | 26826 mm |
| Service mass | 151954 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Built | 1929 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Length | 26.83 m |
| Wheelbase | 11.25 m |
| Total wheelbase | 23.31 m |
| Service mass | 152 t |
| Adhesion mass | 114.5 t |
| Total mass | 251.7 t |
| Rigid wheelbase | 5.11 m |
| Water capacity | 45,425 l |
| Fuel capacity | 18.1 t (coal) |
Boiler
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Grate area | 7.451 m² |
| Firebox surface | 35.768 m² |
| Tube heating surface | 365.481 m² |
| Evaporative heating surface | 401.249 m² |
| Superheater surface | 108.325 m² |
| Total heating surface | 509.6 m² |
Power plant
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 686 x 813 mm |
Power
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Power source | steam |
| Estimated power | 2,610 kW (3,549 PS) |
| Starting effort | 280.0 kN |
| Starting effort booster | 51.155 kN |
Calculated values
| Property | Chicago, Indianapolis & Louisville (Monon) class J-4J-4 rebuilt |
|---|---|
| Factor of adhesion | 1 : 4.01 |
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 17.2 kW/t |
| Heating Surface Equivalent | 796.7 m² |
| Cylinder volume/HSE | 1 : 753.67 |
| Adhesive weight/Total | 1 : 1.33 |
| Tractive force/Heating surface | 1 : 11.48 |
| Grate area/Heating surface | 1 : 68.39 |
| Firebox/Tube surface | 1 : 10.22 |
| Total/Superheater | 1 : 3.70 |
