Sydney & Louisburg 2-8-2 Locomotives in Canada


Class Details by Steve Llanso of Sweat House Media

Class 70 (Locobase 16320)

Data from Locomotive Cyclopedia entry archived on line by Old Line Trains at [link], last accessed 23 Novmber 2017. For a detailed background essay on the S&L in particular and Cape Breton coal and iron exploration in general, see David Frank, "The Cape Breton Coal Industry and the Rise and Fall of the British Empire Steel Company" Acadiensis (1977), pp. 3-34. (Thanks to Steve Low in his November 1917 email supplying a copy of the LC entry.). Works numbers were 66319 in August 1925 and 67622 in July 1928.

The second of these two low-drivered Mikados was ordered first by the British Empire Steel Corporation, a short-lived conglomerate which was taken over in the same year by the S&L's parent Dominion Coal Company, Ltd.

Principal Dimensions by Steve Llanso of Middle Run Media
Class70
Locobase ID16320
RailroadSydney & Louisburg
CountryCanada
Whyte2-8-2
Number in Class2
Road Numbers70-71
GaugeStd
Number Built2
BuilderMontreal LW
Year1925
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)32.83 / 10.01
Ratio of driving wheelbase to overall engine wheelbase 0.43
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)173,900 / 78,880
Engine Weight (lbs / kg)232,400 / 105,415
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)72 / 36
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 1295
Boiler Pressure (psi / kPa)200 / 1380
High Pressure Cylinders (dia x stroke) (in / mm)21" x 28" / 533x711
Tractive Effort (lbs / kg)41,160 / 18669.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.22
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)54.50 / 5.06
Evaporative Heating Surface (sq ft / m2)2819 / 261.89
Superheating Surface (sq ft / m2)685 / 63.64
Combined Heating Surface (sq ft / m2)3504 / 325.53
Evaporative Heating Surface/Cylinder Volume251.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,900
Same as above plus superheater percentage13,080
Same as above but substitute firebox area for grate area
Power L1
Power MT

Photos

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