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Saxon X V

No. 186 on a works photo when it was delivered in 1902

With increasing train weights around the turn of the century, the Saxon State Railways had to find the best design for a powerful express locomotive. The requirements included that a train of 385 tonnes had to be haul...

General

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Built	1903
Manufacturers	Hartmann
Wheel arrangement	4-4-2 (Atlantic)
Gauge	1,435 mm (Standard gauge)

Dimensions and weights

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Length	19.56 m
Wheelbase	9.35 m
Rigid wheelbase	2.15 m
Empty weight	62 t
Service weight	69.4 t
Adhesive weight	31.2 t
Axle load	15.6 t
Total weight	112.7 t
Water capacity	19,500 l
Fuel capacity	5 t (coal)

Boiler

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Grate area	2.33 m²
Firebox surface	13.3 m²
Tube heating surface	147.5 m²
Evaporative heating surface	160.8 m²
Total heating surface	160.8 m²

Power plant

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Driver diameter	1,980 mm
Boiler pressure	15 bar
Expansion type	compound
Cylinders	four, HP: 350 x 660 mm and LP: 555 x 660 mm

Power

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Power source	steam
Estimated power	800 kW (1,088 PS)
Top speed	100 km/h
Starting effort	74.5 kN
Starting effort simple	89.4 kN

Calculated values

Property	Saxon X V 1903 variant 1900 variant 1902 variant 1903 variant Remove
Factor of adhesion	1 : 4.11
Optimal speed	66 km/h
Power-to-weight ratio	11.5 kW/t
Heating Surface Equivalent	227.3 m²
Cylinder volume/HSE	1 : 1,261.19
Adhesive weight/Total	1 : 2.22
Tractive force/Heating surface	1 : 9.68
Grate area/Heating surface	1 : 69.01
Firebox/Tube surface	1 : 11.09

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