Data from 1946 Beyer, Peacock catalogue hosted on Martyn Bane's website at [] (accessed 21 May 2006). See also "4-6-4 Tank Engines, Netherlands State Railways", Locomotive Magazine, Volume 19 (15 December 1913), pp. 272-273.
Batch #0787 (works# 5843-5855,5859-5861, 5867,5874-5876) (Production data from The Beyer, Peacock production list -- [], last accessed 29 May 2006).
Built to the same general size as the tender-engine 4-6-0s, the 4-6-4Ts in this batch followed a set of six (works #5674-5679) delivered by Beyer, Peacock in the previous year.
The rakish profile includes relatively short side tanks (they extended forward only to the first driven axle, a high-mounted Belpaire firebox, full two-way cab. The 6107-6121 had slightly longer tanks.
The SS cancelled 14 locomotives from the 40-locomotive order because of a drop in traffic in neutral Netherlands because of the start of World War I. Those went to Great Britain's Railway Operating Division.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1200/6000 |
| Locobase ID | 7510 |
| Railroad | Staatsspoorewegen (SS) |
| Country | Netherlands |
| Whyte | 4-6-4T |
| Number in Class | 26 |
| Road Numbers | 1210-1219, 1223-1225, 1231, 1238-1240/6001-6026 |
| Gauge | Std |
| Number Built | 26 |
| Builder | Beyer, Peacock |
| Year | 1913 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.78 / 4.20 |
| Engine Wheelbase (ft / m) | 39.21 / 11.95 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | 39.21 / 11.95 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,620 / 15,250 |
| Weight on Drivers (lbs / kg) | 100,800 / 45,722 |
| Engine Weight (lbs / kg) | 208,319 / 94,492 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2402 / 9.10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 56 / 28 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 72.10 / 1831 |
| Boiler Pressure (psi / kPa) | 169.70 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 25.98" / 508x660 |
| Tractive Effort (lbs / kg) | 20,790 / 9430.20 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.85 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 138 - 1.89" / 48 |
| Flues (number - dia) (in / mm) | 21 - 5.236" / 133 |
| Flue/Tube length (ft / m) | 13.29 / 4.05 |
| Firebox Area (sq ft / m2) | 143.16 / 13.30 |
| Grate Area (sq ft / m2) | 25.83 / 2.40 |
| Evaporative Heating Surface (sq ft / m2) | 1419 / 131.80 |
| Superheating Surface (sq ft / m2) | 331 / 30.75 |
| Combined Heating Surface (sq ft / m2) | 1750 / 162.55 |
| Evaporative Heating Surface/Cylinder Volume | 150.21 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4383 |
| Same as above plus superheater percentage | 5216 |
| Same as above but substitute firebox area for grate area | 28,910 |
| Power L1 | 11,039 |
| Power MT | 724.31 |