Trasandino Chileno 6-8-0 Locomotives in Chile

Class Details by Steve Llanso of Sweat House Media

Class 9 (Locobase 20299)

Data from P C Dewhurst, "Locomotive Practice of the Chilian Transandine [sic]", Locomotive Magazine, Volume 20 (15 June 1914), pp. 161-169 (data on p. 169). See also Ian Thomson, "The Transandine Railway: a Hundred Year Long Financial Disaster that Still Attracts Investors", pp. 1-8, archived at [], last accessed 21 October 2017. Works numbers were 3477 in 1908 and 3623 in 1911.

Locobase 20297 shows the six Kitson-Meyer rack & adhesion locomotives that wound up supplying most of the steam power on the Chilean Transandine. This pair presented an alternative power setup and a bigger boiler and grate. The lead six-driver bogie used a large 21.25" (540 mm) x 17.72" (450 mm) rack engine to turn no fewer than three rack pinions. Under the rear boiler, firebox, and bunker was the four-axle adhesion-traction unit.

Certainly they were powerful, but one of them soon derailed at a point on the line where it landed "in a spot from which it could not be economically recovered."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20299
RailroadTrasandino Chileno
Number in Class2
Road Numbers9, 11/10-11
Number Built2
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.48 / 3.50
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)107,519 / 48,770
Engine Weight (lbs / kg)181,440 / 82,300
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)181,440 / 82,300
Tender Water Capacity (gals / ML)2376 / 9
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.80 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)35.80 / 910
Boiler Pressure (psi / kPa)210.30 / 14.50
High Pressure Cylinders (dia x stroke) (in / mm)15.35" x 19.69" / 390x500
Tractive Effort (lbs / kg)23,165 / 10507.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.64
Heating Ability
Tubes (number - dia) (in / mm)316 - 1.811" / 46
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.34 / 3.76
Firebox Area (sq ft / m2)118.94 / 11.05
Grate Area (sq ft / m2)34.44 / 3.20
Evaporative Heating Surface (sq ft / m2)2185 / 203
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2185 / 203
Evaporative Heating Surface/Cylinder Volume518.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7243
Same as above plus superheater percentage7243
Same as above but substitute firebox area for grate area25,013
Power L18270
Power MT

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