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Chicago & North Western class R-1
In order to increase the power of the ten-wheelers for freight use, the R-1 was designed on the basis of the class R. The biggest limitation of the R was the firebox , which was located between the frames and could no...
| Chicago & North Western class R-1Remove | |
|---|---|
| Variant | superheated |
| Built | 1926 |
| Manufacturers | Chicago & North Western |
| Wheel arrangement | 2C |
| Gauge | 1435 mm |
| Length | |
| Service mass | 84368 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Built | 1926 |
| Manufacturers | Chicago & North Western |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Wheelbase | 7.87 m |
| Total wheelbase | 17.60 m |
| Service mass | 84.4 t |
| Adhesion mass | 63 t |
| Total mass | 149.7 t |
| Rigid wheelbase | 4.52 m |
| Water capacity | 28,391 l |
| Fuel capacity | 9.1 t (coal) |
Boiler
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Grate area | 4.383 m² |
| Firebox surface | 20.132 m² |
| Tube heating surface | 162.237 m² |
| Evaporative heating surface | 182.369 m² |
| Superheater surface | 44.222 m² |
| Total heating surface | 226.6 m² |
Power plant
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 533 x 660 mm |
Power
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Power source | steam |
| Estimated power | 1,156 kW (1,572 PS) |
| Starting effort | 137.6 kN |
Calculated values
| Property | Chicago & North Western class R-1superheated |
|---|---|
| Factor of adhesion | 1 : 4.49 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 371.5 m² |
| Cylinder volume/HSE | 1 : 794.52 |
| Adhesive weight/Total | 1 : 1.34 |
| Tractive force/Heating surface | 1 : 12.69 |
| Grate area/Heating surface | 1 : 51.70 |
| Firebox/Tube surface | 1 : 8.06 |
| Total/Superheater | 1 : 4.12 |
