Deutsches Reichsbahn Articulated Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class 99 164 (Locobase 11199)

Data from [link], last accessed 11 April 2010. Works numbers were 13306-13308.

This trio of small articulateds originally were ordered by the Chilean State railways after a 1927 prototype had proved successful on Chile's extensive narrow-gauge system. The three that were ordered a decade later, however, could not be delivered because of the onset of World War II. Although the prototype was equipped with a Westinghouse air-brake system, the production engines used the Knorr-Bremse system. Interesting, much of the frame was riveted.

The German Army set them to work in the Heeresnbungsplatz Rehagen-Klausdorf complex as well as operating them on the Schmalspurbahn network in Mecklenburg-Pommern.

By 1944, the three engines had been dispatched to Polish railways and, after surviving the last chaotic months of World War Two in Poland, were taken in by the PKP and reclassified. Tyy 1-693 operated at the Solvay factory until sold in 1955 while the other two were discarded in 1961.

Principal Dimensions by Steve Llanso of Middle Run Media
Class99 164
Locobase ID11199
RailroadDeutsches Reichsbahn
CountryGermany
Whyte0-6-6-0T
Number in Class3
Road Numbers99 1641-99 1643 / Tyy 1-691 to 693
Gauge60 cm
Number Built3
BuilderOrenstein & Koppel
Year1939
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.22 / 2.20
Engine Wheelbase (ft / m)24.93 / 7.60
Ratio of driving wheelbase to overall engine wheelbase 0.29
Overall Wheelbase (engine & tender) (ft / m)24.93 / 7.60
Axle Loading (Maximum Weight per Axle) (lbs / kg)14,110 / 6400
Weight on Drivers (lbs / kg)84,657 / 38,400
Engine Weight (lbs / kg)84,657 / 38,400
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1320 / 5
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.20 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)24 / 12
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)27.60 / 700
Boiler Pressure (psi / kPa)217.60 / 1500
High Pressure Cylinders (dia x stroke) (in / mm)10.63" x 13.78" / 270x350 (4)
Tractive Effort (lbs / kg)20,870 / 9466.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.53 / 2.60
Firebox Area (sq ft / m2)63.48 / 5.90
Grate Area (sq ft / m2)16.14 / 1.50
Evaporative Heating Surface (sq ft / m2)514 / 47.80
Superheating Surface (sq ft / m2)188 / 17.50
Combined Heating Surface (sq ft / m2)702 / 65.30
Evaporative Heating Surface/Cylinder Volume181.57
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3512
Same as above plus superheater percentage4460
Same as above but substitute firebox area for grate area17,543
Power L18922
Power MT1394.07

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