The reference for locomotives and railcars
Hejaz Railway No. 210, 211, 213 and 215
Ottoman Empire | 1907 | 4 produced
Railway and Locomotive Engineering, May 1909

Since the Hejaz railway from Damascus to Medina also had steep gradients and tight curves, a powerful locomotive was needed for freight trains. Since the tracks were also light with a gauge of just 1,050 mm, six axles were needed to achieve the necessary power. Since there was a lack of water along the route, the tender had to be big enough. The order went to Henschel in Kassel, where four Mallets were built to meet these requirements.

sectional drawing
sectional drawing
flickr/Historical Railway Images

The six axles were distributed over two chassis groups, the first of which had only two coupled axles and one leading axle. The first coupled axle could also be moved laterally to improve running characteristics in curves. The two chassis groups were coupled to each other, which is not usual with Mallets. The locomotives apparently met the requirements and easily hauled 250-tonne trains over the entire route.

Axle config2-4-6-0 (Mallet) 
Gauge3 ft 5 5/16 in (Narrow gauge)
Dimensions and Weights
Wheelbase28 ft 0 in
Service weight115,584 lbs
Adhesive weight100,910 lbs
Total weight200,257 lbs
Water capacity4,755 us gal
Fuel capacity11,023 lbs (coal)
Power sourcesteam
Estimated power805 hp (600 kW)
Optimal speed29 mph
Starting effort17,466 lbf
with start valve20,959 lbf
Power Plant
Driver diameter42.5 in
Boiler pressure174 psi
Expansion typecompound
Cylindersfour, HP: 12 5/8 x 22 1/16 in
and LP: 20 1/16 x 22 1/16 in
Grate area26.9 sq ft
Firebox area107.6 sq ft
Tube heating area1,657.6 sq ft
Evaporative heating area1,765.3 sq ft
Total heating area1,765.3 sq ft
Calculated Values
steam locomotive
last changed: 04/2023

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