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German Reichsbahn class 71[h]0[/h]

71 001 built by Schwartzkopff

Under the class 71, the Reichsbahn combined a number of tank locomotives of the Länderbahnen with the wheel arrangement 2-4-2T for light and fast passenger trains. To replace these locomotives, the 71[h]0[/h] was newl...

	German Reichsbahn class 71[h]0[/h]Remove
Variant	71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure
Built	1936
Manufacturers	Borsig;Krupp
Wheel arrangement	1B1 t
Gauge	1435 mm
Length	11800 mm
Service mass	58600 kg
Top speed	100 km/h
Power
Engine

General

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Built	1936
Manufacturers	Borsig, Krupp
Wheel arrangement	2-4-2T (Columbia)
Gauge	1,435 mm

Dimensions and weights

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Length	11.80 m
Wheelbase	8.40 m
Service mass	58.6 t
Adhesion mass	30 t
Rigid wheelbase	3.00 m
Axle load	15 t
Water capacity	7,000 l
Fuel capacity	3 t (coal)

Boiler

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Grate area	1.38 m²
Firebox surface	5.5 m²
Tube heating surface	67.75 m²
Evaporative heating surface	73.25 m²
Superheater surface	28.6 m²
Total heating surface	101.9 m²

Power plant

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Driver diameter	1,600 mm
Boiler pressure	20 bar
Expansion type	simple expansion
Cylinders	two, 330 x 660 mm

Power

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Power source	steam
Estimated power	500 kW (680 PS)
Top speed	100 km/h
Starting effort	76.4 kN

Calculated values

Property	German Reichsbahn class 71[h]0[/h] 71 005-006 as built 71 001-004 as built 71 001-004 reduced boiler pressure 71 005-006 as built 71 005-006 reduced boiler pressure Remove
Factor of adhesion	1 : 3.85
Optimal speed	40 km/h
Power-to-weight ratio	8.5 kW/t
Heating Surface Equivalent	158.0 m²
Cylinder volume/HSE	1 : 714.78
Adhesive weight/Total	1 : 1.95
Tractive force/Heating surface	1 : 15.66
Grate area/Heating surface	1 : 73.80
Firebox/Tube surface	1 : 12.32
Total/Superheater	1 : 2.56

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