Data from US Military Railway Service Equipment Data Book for French Locomotives supplied in April 2004 by Allen Stanley from his extensive Rail Data Exchange. See also Lord Kitchener's "Sunday Streamline #39. The Iron Mask" blog entry for 3 July 2011 at [] . last accessed 4 July 2017 and Andy Hart, "Les Trains Aerodyamiques du PLM", from SNCF Society Journal Number 128 (December 2007), archived on the web at [
], last accessed 4 July 2017..
Data from US Military Railway Service Equipment Data Book for French Locomotives supplied in April 2004 by Allen Stanley from his extensive Rail Data Exchange. See also Lord Kitchener's "Sunday Streamline #39. The Iron Mask" blog entry for 3 July 2011 at [] . last accessed 4 July 2017.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 23, p. 169. See also Wiki PLM at [], last accessed 9 November 2011. Works numbers were 18512-18515 in December 1900, 18526-18531 in January 1901.
Principal Dimensions by Steve Llanso of Sweat House Media | |||
---|---|---|---|
Class | 221 B | 2971 / 221 A 1 | 2991 |
Locobase ID | 20224 | 10009 | 12458 |
Railroad | Paris-Lyon-Mediterrannee (PLM) | Paris-Lyon-Mediterrannee (PLM) | Paris-Lyon-Mediterrannee (PLM) |
Country | France | France | France |
Whyte | 4-4-2 | 4-4-2 | 4-4-2 |
Number in Class | 10 | 20 | 10 |
Road Numbers | 221 B 1, 3, 8, 11-12, 14-16, 20 | 2 971-2 990 / 221 A 1-20 | 2991-3000 |
Gauge | Std | Std | Std |
Number Built | 20 | 10 | |
Builder | SFCM | SFCM | Burnham, Williams & Co |
Year | 1906 | 1906 | 1900 |
Valve Gear | Walschaert | Walschaert | Stephenson |
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | 6.89 / 2.10 | 6.89 / 2.10 | 7.25 / 2.21 |
Engine Wheelbase (ft / m) | 26.84 / 8.18 | 26.84 / 8.18 | 26.67 / 8.13 |
Ratio of driving wheelbase to overall engine wheelbase | 0.26 | 0.26 | 0.27 |
Overall Wheelbase (engine & tender) (ft / m) | 52.25 / 15.93 | ||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 37,082 / 16,820 | 37,082 / 16,820 | |
Weight on Drivers (lbs / kg) | 80,689 / 36,600 | 74,163 / 33,640 | 72,000 / 32,659 |
Engine Weight (lbs / kg) | 167,110 / 75,800 | 151,524 / 68,730 | 139,000 / 63,049 |
Tender Loaded Weight (lbs / kg) | 83,000 / 37,648 | ||
Total Engine and Tender Weight (lbs / kg) | 222,000 / 100,697 | ||
Tender Water Capacity (gals / ML) | 5840 / 30 | 5840 / 22.12 | 4490 / 17.01 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.60 / 6 | 6.60 / 6 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 | 62 / 31 | 60 / 30 |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 78.70 / 2000 | 78.70 / 2000 | 84.25 / 2121 |
Boiler Pressure (psi / kPa) | 232.10 / 16 | 227.70 / 15.70 | 213 / 14.70 |
High Pressure Cylinders (dia x stroke) (in / mm) | 13.39" x 25.59" / 340x650 | 13.39" x 25.59" / 340x650 | 17.25" x 26" / 438x660 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 21.26" x 25.59" / 540x650 | 21.26" x 25.59" / 540x650 | |
Tractive Effort (lbs / kg) | 16,470 / 7470.68 | 16,157 / 7328.70 | 16,626 / 7541.44 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.90 | 4.59 | 4.33 |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 138 - 2.756" / 70 | 138 - 2.756" / 70 | 246 - 2" / 51 |
Flues (number - dia) (in / mm) | |||
Flue/Tube length (ft / m) | 13.12 / 4 | 13.12 / 4 | 15.08 / 4.60 |
Firebox Area (sq ft / m2) | 166.52 / 15.47 | 170.40 / 15.84 | |
Grate Area (sq ft / m2) | 32.08 / 2.98 | 32.08 / 2.98 | 35 / 3.25 |
Evaporative Heating Surface (sq ft / m2) | 1674 / 155.50 | 2316 / 215.15 | 2096 / 194.80 |
Superheating Surface (sq ft / m2) | 650 / 60.40 | ||
Combined Heating Surface (sq ft / m2) | 2324 / 215.90 | 2316 / 215.15 | 2096 / 194.80 |
Evaporative Heating Surface/Cylinder Volume | 401.37 | 555.30 | 298.03 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 7446 | 7305 | 7455 |
Same as above plus superheater percentage | 9531 | 7305 | 7455 |
Same as above but substitute firebox area for grate area | 37,917 | 36,295 | |
Power L1 | 8944 | 12,537 | |
Power MT | 531.75 | 767.76 |