Unspecified 4-6-2 Locomotives in Russia


Class Details by Steve Llanso of Sweat House Media

Class L (Locobase 735)

"Diagrams [of] Locomotives and 'Passports' [sic], published in Moskva (Moscow), 1935 pp. 40-41, PDF supplied by Teemu Koivmaki in his 5 October 2019. (Many thanks to Teemu for sending what might never have fallen into Locobase's hands. An indispensable addition to Locobase's library.)

Originally oil burners, converted to coal in 1930. Designed by Vazlav Lopushinski. Piston valve diameter measured 250 mm (9.84 in).

16 built for Caucasian in 1915-1918, 48 more for Moscow-Leningrad in 1923-1926. Later moved back south and thence to Ordshonikidze region. In 1947 redesignated Lp (Lopushinsky - built at Putilov.) Not as economical as 2-6-2.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassL
Locobase ID735
Railroad
CountryRussia
Whyte4-6-2
Number in Class64
Road Numbers101-166
Gauge5'
Number Built64
BuilderPutilov
Year1914
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) / 3.96
Engine Wheelbase (ft / m) / 11.51
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)38,140 / 17,300
Weight on Drivers (lbs / kg)114,420 / 51,900
Engine Weight (lbs / kg)213,187 / 96,700
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)72.40 / 1840
Boiler Pressure (psi / kPa)174 / 1200
High Pressure Cylinders (dia x stroke) (in / mm)18.11" x 25.59" / 460x650 (4)
Tractive Effort (lbs / kg)34,290 / 15553.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.34
Heating Ability
Tubes (number - dia) (in / mm)184 - 2.126" / 54
Flues (number - dia) (in / mm)36 - 5.236" / 133
Flue/Tube length (ft / m)17.55 / 5.35
Firebox Area (sq ft / m2)189.45 / 17.60
Grate Area (sq ft / m2)50.05 / 4.65
Evaporative Heating Surface (sq ft / m2)2902 / 269.60
Superheating Surface (sq ft / m2)920 / 85.50
Combined Heating Surface (sq ft / m2)3822 / 355.10
Evaporative Heating Surface/Cylinder Volume190.19
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8709
Same as above plus superheater percentage10,799
Same as above but substitute firebox area for grate area40,876
Power L116,690
Power MT964.74

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