Czech State Rwy 2-8-4 Locomotives in Czechoslovakia
Class Details by Steve Llanso of Sweat House Media
Class 456.0 (Locobase 1659)
Data from [
] (as translated by Google).
Class 486.1 (Locobase 1668)
According to Hans Schaefer, [] (15 Sept 2003)), this 2-8-4 from CKD competed against Skoda's 4-8-2 486.0 class (Locobase 1667) as a 4-axle replacement for the Class 387 and 399 Pacifics. The 486.0 was chosen and these three were the only ones of this arrangement to be built by the Czech Railway to this design.
][] for a history of the CKD firm.
Principal Dimensions by Steve Llanso of Sweat House Media | ||
|---|---|---|
| Class | 456.0 | 486.1 |
| Locobase ID | 1659 | 1668 |
| Railroad | Czech State Rwy (CSD) | Czech State Rwy (CSD) |
| Country | Czechoslovakia | Czechoslovakia |
| Whyte | 2-8-4T | 2-8-4 |
| Number in Class | 27 | 3 |
| Road Numbers | ||
| Gauge | Std | Std |
| Number Built | 27 | 3 |
| Builder | CKD | |
| Year | 1928 | 1934 |
| Valve Gear | Heusinger | Heusinger |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | ||
| Engine Wheelbase (ft / m) | ||
| Ratio of driving wheelbase to overall engine wheelbase | ||
| Overall Wheelbase (engine & tender) (ft / m) | ||
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
| Weight on Drivers (lbs / kg) | 135,520 / 61,471 | 143,136 / 64,925 |
| Engine Weight (lbs / kg) | 244,832 / 111,054 | 241,024 / 109,327 |
| Tender Loaded Weight (lbs / kg) | ||
| Total Engine and Tender Weight (lbs / kg) | 244,832 / 111,054 | |
| Tender Water Capacity (gals / ML) | ||
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 56 / 28 | 60 / 30 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 63.90 / 1623 | 72.10 / 1831 |
| Boiler Pressure (psi / kPa) | 188.50 / 13 | 232.10 / 16 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 23.62" x 28.35" / 600x720 | 21.7" x 26.8" / 551x681 (3) |
| Tractive Effort (lbs / kg) | 39,659 / 17989.04 | 51,797 / 23494.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.42 | 2.76 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 54 - 2.008" / 51 | |
| Flues (number - dia) (in / mm) | 112 - 2.756" / 70 | |
| Flue/Tube length (ft / m) | 17.22 / 5.25 | |
| Firebox Area (sq ft / m2) | 155.80 / 14.50 | |
| Grate Area (sq ft / m2) | 47.34 / 4.40 | 53.80 / 5 |
| Evaporative Heating Surface (sq ft / m2) | 2336 / 217.10 | 2908 / 270.26 |
| Superheating Surface (sq ft / m2) | 890 / 82.70 | 1136 / 105.58 |
| Combined Heating Surface (sq ft / m2) | 3226 / 299.80 | 4044 / 375.84 |
| Evaporative Heating Surface/Cylinder Volume | 162.47 | 168.99 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 8924 | 12,487 |
| Same as above plus superheater percentage | 11,422 | 15,983 |
| Same as above but substitute firebox area for grate area | 37,591 | |
| Power L1 | 15,534 | |
| Power MT | 1010.82 | |