Data from the PLM Wiki vault crammed with data and plans at [], last accessed 3 November 2011. The plan comes from the 1869 PLM plan book collected by Roland Sermet
161 : Auxonne, 162 : D(le, 163 : Besanton, 164 : Baume-les-Dames, 165 : Vesoul, 166 : MontbTliard, 167 : Lure, 168 : Belfort, 169 : Thann, 170 : Mulhouse
NB: The boiler pressure setting is an estimate.
Data from Gustav Reder (Michael Reynolds, trans), The World of Steam Locomotives (New York: Putnam, 1974),
Similar to the Borsig "Spinning Wheels," these engines were designed by Alexis Barrault and built by Jean Francois Cail. They overcame the unsteady riding qualities of the 2-2-2 "Longboilers" by putting the rear carrying axle behind the firebox, although the horizontal outside cylinders were still ahead of the lead carrying axle. These were small but serviceable engines that recorded 36-37 mph with a 8- or 9-car train of 50-60 tons.
When built, these engines operated at 88.2 psi, yielding a tractive effort of 5,622 lb, a boiler demand factor of 468, a grate demand factor of 40,211, and a factor of adhesion of 4.43. They were later rebuilt as 2-4-0s with an extended boiler and overhanging firebox.
When the Paris-Lyon became the PLM, these engines were renumbered 101-145, rebuilt as 2-4-0s in 1865-1866, and 15 slightly different engines (146-160) were acquired. Perrache-type engines on the Midi ran at least until 1918.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | Omnibus | Perraches |
| Locobase ID | 13362 | 607 |
| Railroad | Paris-Lyon / PLM | Paris-Lyon / PLM |
| Country | France | France |
| Whyte | 2-2-2 | 2-2-2 |
| Number in Class | 10 | |
| Road Numbers | 161-170 / 29-38 | 1-45 |
| Gauge | Std | Std |
| Number Built | 10 | |
| Builder | Parent & Schaken | Cail |
| Year | 1853 | 1847 |
| Valve Gear | Gooch | |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | ||
| Engine Wheelbase (ft / m) | 14.17 / 4.32 | 13.16 / 4.01 |
| Ratio of driving wheelbase to overall engine wheelbase | ||
| Overall Wheelbase (engine & tender) (ft / m) | ||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,455 / 12,000 | |
| Weight on Drivers (lbs / kg) | 26,455 / 12,000 | 24,917 / 11,302 |
| Engine Weight (lbs / kg) | 54,145 / 24,560 | 55,585 / 25,213 |
| Tender Loaded Weight (lbs / kg) | 42,562 / 19,306 | |
| Total Engine and Tender Weight (lbs / kg) | 98,147 / 44,519 | |
| Tender Water Capacity (gals / ML) | 1584 / 6 | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.10 / 2 | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 44 / 22 | 42 / 21 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 71.90 / 1827 | 70.90 / 1800 |
| Boiler Pressure (psi / kPa) | 116 / 800 | 120.40 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 23.62" / 400x600 | 14.96" x 23.62" / 380x600 |
| Tractive Effort (lbs / kg) | 8035 / 3644.62 | 7630 / 3460.91 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.29 | 3.27 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 145 - 1.811" / 46 | |
| Flues (number - dia) (in / mm) | - 5.039" / 128 | |
| Flue/Tube length (ft / m) | 10.66 / 3.25 | 11.32 / 3.45 |
| Firebox Area (sq ft / m2) | 84.07 / 7.81 | 63.48 / 5.90 |
| Grate Area (sq ft / m2) | 9.90 / 0.92 | |
| Evaporative Heating Surface (sq ft / m2) | 943 / 87.61 | 884 / 82.15 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 943 / 87.61 | 884 / 82.15 |
| Evaporative Heating Surface/Cylinder Volume | 177.05 | 183.96 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1192 | |
| Same as above plus superheater percentage | 1192 | |
| Same as above but substitute firebox area for grate area | 9752 | 7643 |
| Power L1 | 3558 | 3557 |
| Power MT | 296.50 | 314.72 |