Imperial Government of Russia Nicolas RR 4-4-0 Locomotives in Russia

Class Details by Steve Llanso of Sweat House Media

Class K (Locobase 9110)

Data from Apercu des Chemins de Fer Russes Depuis l'Origine Jusqu'en 1892, Editor in Chief Andre de Gortschakov (Brussells: Paul Weissenbruch, 1897).

The account credits an English firm of Uster with the first deliveries, then notes that the Alexandrov works supplied 30 of the engines. The K class were the leading passenger locomotive according to the account. Locals of 43 axles and totalling 260 tonnes or expresses of 23 axles and 160 tonnes could be hauled by a K.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID9110
RailroadImperial Government of Russia Nicolas RR
Number in Class50
Road Numbers
Number Built50
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)28.95 / 8.82
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)
Engine Weight (lbs / kg)84,878 / 38,500
Tender Loaded Weight (lbs / kg)65,698 / 29,800
Total Engine and Tender Weight (lbs / kg)150,576 / 68,300
Tender Water Capacity (gals / ML)2761 / 10.46
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)67 / 1702
Boiler Pressure (psi / kPa)118.90 / 8.20
High Pressure Cylinders (dia x stroke) (in / mm)17.01" x 22.01" / 432x559
Tractive Effort (lbs / kg)9606 / 4357.21
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)174 - 2.244" / 57
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.50 / 3.81
Firebox Area (sq ft / m2)111.90 / 10.40
Grate Area (sq ft / m2)18.72 / 1.74
Evaporative Heating Surface (sq ft / m2)1353 / 125.70
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1353 / 125.70
Evaporative Heating Surface/Cylinder Volume233.72
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2226
Same as above plus superheater percentage2226
Same as above but substitute firebox area for grate area13,305
Power L14386
Power MT

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