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 | |
|---|---|
| Class | ET7 |
| Locobase ID | 4784 |
| Railroad | China State |
| Country | China |
| Whyte | 0-8-0T |
| Number in Class | 90 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 90 |
| Builder | Chrzanow |
| Year | 1949 |
| Valve Gear | Walschaert |
| 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 wheelbase | 1 |
| 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 / 1400 |
| 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 Volume | 129.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4807 |
| Same as above plus superheater percentage | 6057 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |