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Japanese Government Railways class C12
The C12 was a class of 2-6-2T “Prairie” tank locomotives built for mixed traffic on branch lines with a low axle load limit. It was designed by Hideo Shima in the early thirties, together with the C56 2-6-0. This mean...
General
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Built | 1932-1943, 1947 |
| Manufacturers | Kawasaki, Kisha Seizō, Nippon Sharyō, Hitachi, Mitsubishi |
| Wheel arrangement | 2-6-2ST (Prairie) |
| Gauge | 1,067 mm (Cape gauge) |
Dimensions and weights
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Length | 11.35 m |
| Service weight | 50.1 t |
| Adhesive weight | 32 t |
| Axle load | 10.9 t |
| Water capacity | 5,500 l |
| Fuel capacity | 1.5 t (coal) |
Boiler
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Grate area | 1.3 m² |
| Firebox surface | 7.4 m² |
| Tube heating surface | 46.1 m² |
| Evaporative heating surface | 53.5 m² |
| Superheater surface | 19.8 m² |
| Total heating surface | 73.3 m² |
Power plant
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Driver diameter | 1,400 mm |
| Boiler pressure | 14 bar |
| Expansion type | simple expansion |
| Cylinders | two, 400 x 610 mm |
Power
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Power source | steam |
| Indicated power | 371 kW (504 PS) |
| Starting effort | 83.0 kN |
Calculated values
| Property | Japanese Government Railways class C12Remove |
|---|---|
| Factor of adhesion | 1 : 3.78 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 7.4 kW/t |
| Heating Surface Equivalent | 130.1 m² |
| Cylinder volume/HSE | 1 : 1,178.40 |
| Adhesive weight/Total | 1 : 1.56 |
| Tractive force/Heating surface | 1 : 23.64 |
| Grate area/Heating surface | 1 : 56.38 |
| Firebox/Tube surface | 1 : 6.23 |
| Total/Superheater | 1 : 2.70 |
