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Victorian Railways class D[h]D[/h]

D[h]D[/h] No. 5902 on a factory photo

The class D[h]D[/h] express locomotive marked the change from the 4-4-0 to the 4-6-0 wheel arrangement for the Victorian Railways. It was the railway's first locomotive, which they developed themselves in 1902 and whi...

	Victorian Railways class D[h]D[/h]Remove
Variant	rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t]
Built	ab 1914
Manufacturers	Newport;Ballarat North;Bendigo;Baldwin;Beyer, Peacock & Co.;Walkers;Thompsons Ltd;Phoenix Foundry
Wheel arrangement	2C
Gauge	1600 mm
Length	17489 mm
Service mass	55781 kg
Top speed
Power
Engine

General

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Built	ab 1914
Manufacturers	Newport, Ballarat North, Bendigo, Baldwin, Beyer, Peacock & Co., Walkers, Thompsons Ltd, Phoenix Foundry
Wheel arrangement	4-6-0 (Ten-wheeler)
Gauge	1,600 mm

Dimensions and weights

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Length	17.49 m
Wheelbase	7.40 m
Total wheelbase	14.63 m
Service mass	55.8 t
Adhesion mass	39.8 t
Total mass	98.7 t
Rigid wheelbase	3.91 m
Axle load	13.3 t
Water capacity	19,147 l
Fuel capacity	5.1 t (coal)

Boiler

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Grate area	2.09 m²
Firebox surface	11.148 m²
Tube heating surface	96.062 m²
Evaporative heating surface	107.21 m²
Superheater surface	31.03 m²
Total heating surface	138.2 m²

Power plant

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Driver diameter	1,549 mm
Boiler pressure	11.4 bar
Expansion type	simple expansion
Cylinders	two, 457 x 660 mm

Power

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Power source	steam
Estimated power	597 kW (812 PS)
Starting effort	86.2 kN

Calculated values

Property	Victorian Railways class D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h] rebuilt D[h]2[/h] D[h]D[/h][t]E[/t] Remove
Factor of adhesion	1 : 4.54
Optimal speed	42 km/h
Power-to-weight ratio	10.7 kW/t
Heating Surface Equivalent	225.0 m²
Cylinder volume/HSE	1 : 963.69
Adhesive weight/Total	1 : 1.40
Tractive force/Heating surface	1 : 13.02
Grate area/Heating surface	1 : 66.14
Firebox/Tube surface	1 : 8.62
Total/Superheater	1 : 3.46

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