China State 0-8-0 Locomotives in China


Class Details by Steve Llanso of Sweat House Media

Class ET7 (Locobase 4784)

One of a series of Polish industrial locomotives built after World War II. Rated at 800 hp, it reached 40 kmh (25 mph).

Data from Phillipe Quiot on the website [] . Part of the Slask class. [], a Swiss museum website, says 102 examples were supplied to China. It also credits the Slask with a 50 kmh (31 mph) top speed.

Principal Dimensions by Steve Llanso of Middle Run Media

ClassET7
Locobase ID4784
RailroadChina State
CountryChina
Whyte0-8-0T
Number in Class90
Road Numbers
GaugeStd
Number Built90
BuilderChrzanow
Year1949
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.15 / 3.40
Engine Wheelbase (ft / m)11.15 / 3.40
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)36,960 / 16,765
Weight on Drivers (lbs / kg)147,840 / 67,059
Engine Weight (lbs / kg)147,840 / 67,059
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)147,840 / 67,059
Tender Water Capacity (gals / ML)1716 / 6.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)62 / 31
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43.30 / 1100
Boiler Pressure (psi / kPa)203.10 / 14
High Pressure Cylinders (dia x stroke) (in / mm)21.65" x 21.65" / 550x550
Tractive Effort (lbs / kg)40,459 / 18351.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.65
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)23.67 / 2.20
Evaporative Heating Surface (sq ft / m2)1197 / 111.25
Superheating Surface (sq ft / m2)430 / 39.96
Combined Heating Surface (sq ft / m2)1627 / 151.21
Evaporative Heating Surface/Cylinder Volume129.76
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4807
Same as above plus superheater percentage6057
Same as above but substitute firebox area for grate area
Power L1
Power MT

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