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Japanese Government Railways class C51, originally class 18900
The locomotive later known as class C51 was introduced in 1919 to increase the speed of long-distance express trains. Following suggestions of German engineers to keep the rotational speed of the drivers below 300 rpm...
General
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Built | 1919-1928 |
| Manufacturers | Kisha Seizō, Mitsubishi, Hamamatsu |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Length | 19.99 m |
| Wheelbase | 10.00 m |
| Rigid wheelbase | 3.80 m |
| Total wheelbase | 17.77 m |
| Service weight | 67.8 t |
| Adhesive weight | 43.9 t |
| Axle load | 14.6 t |
| Total weight | 111.6 t |
| Water capacity | 17,000 l |
| Fuel capacity | 8 t (coal) |
Boiler
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Grate area | 2.53 m² |
| Firebox surface | 12.4 m² |
| Tube heating surface | 115 m² |
| Evaporative heating surface | 127.4 m² |
| Superheater surface | 41.4 m² |
| Total heating surface | 168.8 m² |
Power plant
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Driver diameter | 1,750 mm |
| Boiler pressure | 13 bar |
| Expansion type | simple expansion |
| Cylinders | two, 530 x 660 mm |
Power
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Power source | steam |
| Indicated power | 864 kW (1,175 PS) |
| Top speed | 95 km/h |
| Starting effort | 117.1 kN |
Calculated values
| Property | Japanese Government Railways class C51, originally class 18900Remove |
|---|---|
| Factor of adhesion | 1 : 3.68 |
| Optimal speed | 45 km/h |
| Power-to-weight ratio | 12.8 kW/t |
| Heating Surface Equivalent | 272.2 m² |
| Cylinder volume/HSE | 1 : 1,069.86 |
| Adhesive weight/Total | 1 : 1.54 |
| Tractive force/Heating surface | 1 : 14.48 |
| Grate area/Heating surface | 1 : 66.72 |
| Firebox/Tube surface | 1 : 9.27 |
| Total/Superheater | 1 : 3.08 |
