Nord 0-6-4 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class 3021 (Locobase 11276)
Data from Maurice Demoulin, Traite Pratique de la Machine Locomotive (Paris: Libraire Polytechnique, Baudry et Cie, 1898), p. 143. See also Gabriel Bonnin : MTmoires dñun MTcanicien de Route, La Grande Aventure de la Vapeur 1931-1971, archived at [
], last accessed 15 January 2017; and "Le materiel roulant du service metropoliain de la Petite Ceinture", presented at [], last accessed 15 January 2017.
MacDonnell's Great Southern & Western Railway in Ireland was the inspiration for this relatively large order of mixed-traffic tanks. Compared to the 0-6-2Ts of the same year (Locobase 11273), this design had taller drivers, a bigger grate, and more cylinder volume. They were rated to pull a 350-ton train up a 0.5% grade at 40 km/h (25 mph).
According to Gabriel Bonnin's memoirs, these were known as Courtes Queues (Locobase translates as "bobtails") because of a particularly small bunker.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3021 |
| Locobase ID | 11276 |
| Railroad | Nord |
| Country | France |
| Whyte | 0-6-4T |
| Number in Class | 55 |
| Road Numbers | 3021-3075 |
| Gauge | Std |
| Number Built | 55 |
| Builder | |
| Year | 1881 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.45 / 4.10 |
| Engine Wheelbase (ft / m) | 24.93 / 7.60 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.54 |
| Overall Wheelbase (engine & tender) (ft / m) | 24.93 / 7.60 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 79,366 / 36,000 |
| Engine Weight (lbs / kg) | 120,372 / 54,600 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 120,372 / 54,600 |
| Tender Water Capacity (gals / ML) | 1320 / 5 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 44 / 22 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 65.50 / 1664 |
| Boiler Pressure (psi / kPa) | 127.60 / 880 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.01" x 24.02" / 432x610 |
| Tractive Effort (lbs / kg) | 11,508 / 5219.95 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.90 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 25.07 / 2.33 |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3199 |
| Same as above plus superheater percentage | 3199 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |