Dombes et du Sud-Est / PLM 2-4-0 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class 2 / 3 638 / 5 638 (Locobase 13430)
Data from [
], last accessed 13 November 2011.
This quartet was originally delivered by Koechlin into terminal switching service in 1865. In 1888, they entered a second career as locomotives of light, local trains. So reconditioned, the class remained in service until 1908 (5 640) and 1909 (5 638-5 6398, 5 641).
Class 6 / 671 (Locobase 13405)
Data from Wiki PLM [], last accessed on 10 November 2011.
Specifications for 1884 updated version. Both engines were retired in 1905.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 2 / 3 638 / 5 638 | 6 / 671 |
| Locobase ID | 13430 | 13405 |
| Railroad | Dombes et du Sud-Est / PLM | Dombes et du Sud-Est / PLM |
| Country | France | France |
| Whyte | 2-4-0T | 2-4-0 |
| Number in Class | 4 | 2 |
| Road Numbers | 2-5 / 3 638-3 641 / 5 638-5 641 | 6-7 / 671-672 |
| Gauge | Std | Std |
| Number Built | 4 | 2 |
| Builder | PLM | Koechlin |
| Year | 1888 | 1868 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 6.56 / 2 | 6.04 / 1.84 |
| Engine Wheelbase (ft / m) | 13.45 / 4.10 | 11.48 / 3.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.49 | 0.53 |
| Overall Wheelbase (engine & tender) (ft / m) | 13.45 / 4.10 | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 28,418 / 12,890 | 25,684 / 11,650 |
| Weight on Drivers (lbs / kg) | 56,835 / 25,780 | 51,368 / 23,300 |
| Engine Weight (lbs / kg) | 81,306 / 36,880 | 70,041 / 31,770 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | ||
| Tender Water Capacity (gals / ML) | 1045 / 3.96 | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 47 / 23.50 | 43 / 21.50 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 57.10 / 1450 | 65 / 1650 |
| Boiler Pressure (psi / kPa) | 120.40 / 830 | 120.40 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 12.2" / 380x310 | 16.54" x 22.05" / 420x560 |
| Tractive Effort (lbs / kg) | 4894 / 2219.88 | 9498 / 4308.23 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 11.61 | 5.41 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 184 - 1.969" / 50 | |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 10.24 / 3.12 | |
| Firebox Area (sq ft / m2) | 64.80 / 6.02 | 74.81 / 6.95 |
| Grate Area (sq ft / m2) | 11.41 / 1.06 | 13.89 / 1.29 |
| Evaporative Heating Surface (sq ft / m2) | 898 / 83.41 | 1206 / 112.03 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 898 / 83.41 | 1206 / 112.03 |
| Evaporative Heating Surface/Cylinder Volume | 361.81 | 219.93 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1374 | 1672 |
| Same as above plus superheater percentage | 1374 | 1672 |
| Same as above but substitute firebox area for grate area | 7802 | 9007 |
| Power L1 | 5641 | 3758 |
| Power MT | 437.63 | 322.57 |