San'yō Railway type 8
Japanese Government Railways class 5060
Japan 1895 1 produced
No. 39 of the San'yō Railway was a single 2-4-2 passenger locomotive built by Baldwin in 1895. The manufacturer designated it type 8-14/28 1/4C and it originally carried a name plate “K. Minami” after the chief engineer of the railway. It was a four-cylinder Vauclain compound with high pressure cylinders above the low pressure cylinders. The leading axle was mounted in a flexible Bissel truck, while the trailing one only had some lateral play. After the railway was nationalized in 1906, the new scheme of 1909 made the single locomotive class 5060. In later years it was used in freight service until its withdrawal in 1919.
Technical data
General
- Built
- 1895
- Manufacturers
- Baldwin
- Wheel arrangement
- 2-4-2 (Columbia)
- Gauge
- 1,067 mm (Cape gauge)
Dimensions and weights
- Length
- 14.71 m
- Wheelbase
- 3.66 m
- Total wheelbase
- 5.99 m
- Empty mass
- 33.8 t
- Service mass
- 36.9 t
- Adhesion mass
- 22.8 t
- Rigid wheelbase
- 1.83 m
- Axle load
- 11.1 t
- Water capacity
- 9,085 l
- Fuel capacity
- 2.5 t (coal)
Boiler
- Grate area
- 1.254 m²
- Firebox surface
- 8.073 m²
- Tube heating surface
- 74.518 m²
- Evaporative heating surface
- 82.591 m²
- Total heating surface
- 82.6 m²
Power plant
- Driver diameter
- 1,524 mm
- Boiler pressure
- 12.4 bar
- Expansion type
- compound
- Cylinders
- four, HP: 254 x 559 mm and LP: 432 x 559 mm
Power
- Power source
- steam
- Estimated power
- 261 kW (355 PS)
- Starting effort
- 37.1 kN
- Starting effort simple
- 44.5 kN
Calculated values
- Factor of adhesion
- 1 : 6.02
- Optimal speed
- 43 km/h
- Power-to-weight ratio
- 7.1 kW/t
- Heating Surface Equivalent
- 123.0 m²
- Cylinder volume/HSE
- 1 : 1,126.09
- Adhesive weight/Total
- 1 : 1.62
- Tractive force/Heating surface
- 1 : 9.38
- Grate area/Heating surface
- 1 : 65.86
- Firebox/Tube surface
- 1 : 9.23
