Data from 1913 QM & S locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.
These ten-wheelers must have been among the first locomotives purchased after the D & H bought the Quebec Southern and renamed it the QM & S (see Locobase 6645). There were 7 D-3s (works #43702-08), but these two (43703 and 43708) were the only ones with 72" drivers; see Locobase 6647 for the 63" version. The design's most obvious feature is the capacious Wootten firebox for burning culm, although MLW fitted a conventional cab on the boiler. By the time the Canadian National had bought the QM & S in 1929, 3 of the 7 had been retired. The others were designated H-2a and renumbered 1202-1205. They were withdrawn within two years.Data from 1913 QM & S locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.
These ten-wheelers must have been among the first locomotives purchased after the D & H bought the Quebec Southern and renamed it the QM & S (see Locobase 6645). There were 8 D-3s (works #43702-09) including the one that went to the Napierville Junction (#43709); see Locobase 6646 for the two that ran on 72" drivers. Alco's works numbers for the 63"-ers ran 43702, 43704-43707. The design's most obvious feature is the capacious Wootten firebox for burning culm, although MLW fitted a conventional cab on the boiler. By the time the Canadian National had bought the QM & S in 1929, 3 of the 7 had been retired. The others were designated H-2a and renumbered 1202-1205. They were withdrawn within two years.
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | D-3 | D-3-B |
Locobase ID | 6646 | 6647 |
Railroad | Quebec, Montreal & Southern | Quebec, Montreal & Southern |
Country | Canada | Canada |
Whyte | 4-6-0 | 4-6-0 |
Number in Class | 2 | 6 |
Road Numbers | 201, 206 | 200, 202-205, 207 |
Gauge | Std | Std |
Number Built | 2 | 6 |
Builder | Montreal LW | Montreal LW |
Year | 1907 | 1907 |
Valve Gear | Walschaert | Walschaert |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 15 / 4.57 | 15 / 4.57 |
Engine Wheelbase (ft / m) | 26.42 / 8.05 | 26.42 / 8.05 |
Ratio of driving wheelbase to overall engine wheelbase | 0.57 | 0.57 |
Overall Wheelbase (engine & tender) (ft / m) | 59 / 17.98 | 59 / 17.98 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 148,000 / 67,132 | 148,000 / 67,132 |
Engine Weight (lbs / kg) | 191,700 / 86,954 | 191,780 / 86,990 |
Tender Loaded Weight (lbs / kg) | 143,450 / 65,068 | 148,067 / 67,162 |
Total Engine and Tender Weight (lbs / kg) | 335,150 / 152,022 | 339,847 / 154,152 |
Tender Water Capacity (gals / ML) | 6800 / 25.76 | 6800 / 25.76 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 14 / 13 | 14 / 13 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 82 / 41 | 82 / 41 |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 72 / 1829 | 63 / 1600 |
Boiler Pressure (psi / kPa) | 200 / 13.80 | 200 / 13.80 |
High Pressure Cylinders (dia x stroke) (in / mm) | 21" x 26" / 533x660 | 21" x 26" / 533x660 |
Tractive Effort (lbs / kg) | 27,073 / 12280.12 | 30,940 / 14034.16 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.47 | 4.78 |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 308 - 2" / 51 | 308 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 15 / 4.57 | 15 / 4.57 |
Firebox Area (sq ft / m2) | 178.40 / 16.58 | 178.40 / 16.58 |
Grate Area (sq ft / m2) | 84.85 / 7.89 | 84.85 / 7.89 |
Evaporative Heating Surface (sq ft / m2) | 2584 / 240.15 | 2584 / 240.15 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 2584 / 240.15 | 2584 / 240.15 |
Evaporative Heating Surface/Cylinder Volume | 247.98 | 247.98 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 16,970 | 16,970 |
Same as above plus superheater percentage | 16,970 | 16,970 |
Same as above but substitute firebox area for grate area | 35,680 | 35,680 |
Power L1 | 8006 | 7005 |
Power MT | 357.77 | 313.04 |