Ferrocarril Dorado Beyer-Garratt Locomotives in Colombia
Class Details by Steve Llanso of Sweat House Media
Class 17 (Locobase 518)
Data from Gavin Hamilton's excellent compilation of Garratt data posted at [
], first accessed 6 September 2005; and [] (31 December 2003); later revised to [], last accessed 1 October 2022; and A[rthur] E[dward] Durrant, Garratt Locomotives of the World (revised edition) (Newton Abbott, UK: David & Charles, 1981), p 98.. Works numbers were 6843-6844 in 1937.
Hamilton noted that these Small Double Pacifics were the only Garratts to have been built for the metre gauge by Beyer, Peacock. Durrant described some details of construction, noting that the pair used bar frames and had the round-top boilers' fireboxes' direct heating surface area included that supplied by thermic syphons. They were to tackle the 1 in 50 (2%) grades encounterd between Marequita and Honda.
Both were withdrawn by 1955.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 17 |
| Locobase ID | 518 |
| Railroad | Ferrocarril Dorado |
| Country | Colombia |
| Whyte | 4-6-2+2-6-4 |
| Number in Class | 2 |
| Road Numbers | 17-18 |
| Gauge | 3' |
| Number Built | 2 |
| Builder | Beyer, Peacock |
| Year | 1938 |
| Valve Gear | Walschaert |
| 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) | 22,400 / 10,160 |
| Weight on Drivers (lbs / kg) | 134,176 / 60,861 |
| Engine Weight (lbs / kg) | 263,424 / 119,487 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 263,424 / 119,487 |
| Tender Water Capacity (gals / ML) | 4200 / 15.91 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 40 / 1016 |
| Boiler Pressure (psi / kPa) | 184.20 / 1270 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 22" / 356x559 (4) |
| Tractive Effort (lbs / kg) | 33,756 / 15311.48 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.97 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 175 / 16.26 |
| Grate Area (sq ft / m2) | 39 / 3.62 |
| Evaporative Heating Surface (sq ft / m2) | 1575 / 146.32 |
| Superheating Surface (sq ft / m2) | 270 / 25.08 |
| Combined Heating Surface (sq ft / m2) | 1845 / 171.40 |
| Evaporative Heating Surface/Cylinder Volume | 200.91 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7184 |
| Same as above plus superheater percentage | 8261 |
| Same as above but substitute firebox area for grate area | 37,070 |
| Power L1 | 7644 |
| Power MT | 753.58 |