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South Manchurian Railway Mikai and Mikako class

Manchukuo Mikai No. 1-1500, later China Railway JF1 501

In 1918 the South Manchuria Railway, also called Mantetsu, received 25 Mikado locomotives built by ALCO. Due to their wheel arrangement, they were called “Mikai”. Only in 1924, they ordered 45 more from several Japane...

General

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Built	1935-1945
Manufacturers	ALCO, Shahekou, Kawasaki, Kisha Seiz&#333, Nippon Shary&#333, Hitachi, Sifang, Dalian, Qiqihar, Taiyuan, Mitsubishi
Wheel arrangement	2-8-2 (Mikado)
Gauge	1,435 mm (Standard gauge)

Dimensions and weights

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Length	23.75 m
Service weight	103.1 t
Adhesive weight	79.9 t
Axle load	20 t

Boiler

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Grate area	5.08 m²

Power plant

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Driver diameter	1,370 mm
Boiler pressure	14 bar
Expansion type	simple expansion
Cylinders	two, 580 x 710 mm

Power

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Power source	steam
Indicated power	1,300 kW (1,768 PS)
Top speed	80 km/h
Starting effort	207.5 kN

Calculated values

Property	South Manchurian Railway Mikai and Mikako class Mikako Mikai Big Mika Mikako JF1 Remove
Factor of adhesion	1 : 3.78
Optimal speed	39 km/h
Power-to-weight ratio	12.6 kW/t
Adhesive weight/Total	1 : 1.29

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