Peter the Great Fortress at Revel 2-6-0 Locomotives in Russia


Class Details by Steve Llanso of Sweat House Media

Class A1 (Locobase 10011)

Data from Railway Age Gazette, Volume 59, No 22 (26 November 1915), p. 1012; "Interesting Variety of Types of Locomotives for the Greek, Serbian, Belgian and Russian Governments built by the American Locomotive Company", Railway & Locomotive Engineering, Volume XXVIII [28], No. 12 (December 1915), pp. 406-409. and Railway Review, Volume 57 (4 December 1915), p. 716. Works numbers were 55400-55414 in November 1915.

Reval (or Revel), later capital of Estonia, was first fortified before 1219. When Swedish King Erik XIV captured Reval in 1561, the new owners enlarged the fortress over the next 50 years. Peter the Great took Reval in 1710, he and his successors underlined the city's strategic importance by continuing to expand and upgrade the fortress into the 19th century.

One can gauge the size of the complex by 1915 by noting that Alco's order was for 15 narrow-gauge Moguls.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassA1
Locobase ID10011
RailroadPeter the Great Fortress at Revel
CountryRussia
Whyte2-6-0
Number in Class15
Road NumbersA 1-A 15
Gauge75 cm
Number Built15
BuilderAlco-Cooke
Year1915
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.20 / 2
Engine Wheelbase (ft / m) 8.20 / 3.80
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)33,041 / 14,987
Engine Weight (lbs / kg)36,960 / 16,765
Tender Loaded Weight (lbs / kg)17,361 / 7875
Total Engine and Tender Weight (lbs / kg)54,321 / 24,640
Tender Water Capacity (gals / ML)840 / 3.18
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.50 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33.50 / 851
Boiler Pressure (psi / kPa)165.30 / 11.40
High Pressure Cylinders (dia x stroke) (in / mm)10.98" x 15.98" / 279x406
Tractive Effort (lbs / kg)8080 / 3665.03
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.09
Heating Ability
Tubes (number - dia) (in / mm)85 - 2" / 0
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.50
Firebox Area (sq ft / m2)41
Grate Area (sq ft / m2) 9.26 / 0.86
Evaporative Heating Surface (sq ft / m2)504 / 46.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)504 / 46.84
Evaporative Heating Surface/Cylinder Volume287.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1531
Same as above plus superheater percentage1531
Same as above but substitute firebox area for grate area6777
Power L13736
Power MT747.84

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