le Dauphine / PLM 2-4-0 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class 737 / 850 / 3 375 (Locobase 13424)
Data from the PLM Wiki vault crammed with data and plans at [
], last accessed 12 November 2011.
Six-wheelers for local mixed traffic all had the same specifications when they were delivered to different railways in 1854-1860. These lines would all come together under the PLM banner before too long.
Like the others, these 2 Le Dauphine locomotives would receive a dome in 1873, have a pressure upgrade in a boiler with longer tubes of a slightly lower count, and roll on slightly larger drivers. And like the others, they would operate into the 1920s. See the Grand Centrals as modified by the PLM at Locobase 13424 for the specifications of the later version of all of these 2-4-0s.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 737 / 850 / 3 375 |
| Locobase ID | 13424 |
| Railroad | le Dauphine / PLM |
| Country | France |
| Whyte | 2-4-0 |
| Number in Class | 2 |
| Road Numbers | 737-738 / 850-851 / 3 375-3 376 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Parent & Schaken |
| Year | 1857 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.71 / 1.74 |
| Engine Wheelbase (ft / m) | 11.52 / 3.51 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,588 / 12,060 |
| Weight on Drivers (lbs / kg) | 53,175 / 24,120 |
| Engine Weight (lbs / kg) | 75,111 / 34,070 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 44 / 22 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 113.10 / 780 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.72" x 23.62" / 450x600 |
| Tractive Effort (lbs / kg) | 11,317 / 5133.31 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.70 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 178 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.94 / 4.25 |
| Firebox Area (sq ft / m2) | 81.91 / 7.61 |
| Grate Area (sq ft / m2) | 13.46 / 1.25 |
| Evaporative Heating Surface (sq ft / m2) | 1259 / 116.94 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1259 / 116.94 |
| Evaporative Heating Surface/Cylinder Volume | 186.74 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1522 |
| Same as above plus superheater percentage | 1522 |
| Same as above but substitute firebox area for grate area | 9264 |
| Power L1 | 2939 |
| Power MT | 243.70 |