Kewaunee, Green Bay & Western 2-6-0 "Mogul" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class R (Locobase 1352)

Data from photo and data archived at http://www.greenbayroute.com/191438build.htm . Works numbers for these two engines were 54888 in September 1914 and 63139 in August 1921.

Seventeen 2-6-0s were built between 1907 & 1924, most with 175-lb boilers. Schenectady produced most of them, with Pittsburgh erecting some of the 250-256 run. The first group (27-30, 36-37) were built in 1907-1912. These were retired in 1936. Later engines, built from 1913-1924, were renumbered 250-260 in 1936. These went out of service gradually between 1939 and 1948.

After the Moguls been in service for a while, GB&W upgraded them with piston valves operated by Walschaerts gear and superheaters. Seven even had Nicholson thermic syphons installed in their fireboxes from 1925-1929.

Both of the KGB&W engines operated until 1945 with 258 being scrapped first in May 1945 and 257 following in July of the same year.

NB: Locobase estimates the tube and flue counts (134 and 18, respectively) as follows: Subtracting the given firebox heating surface from the total heating surface as supplied in the original data yields the tube heating surface. Using the more complete data from Locobase 14100, which shows a very similar, but slightly smaller boiler on affiliated road GB&W 56, Locobase calculates the number of square feet in each tube on that locomotive. Applying that result (8.416) and dividing it into the larger heating surface area in the 38 (minus the firebox) yields 134 tubes.

Specifications by Steve Llanso of Sweat House Media
ClassR
Locobase ID1352
RailroadKewaunee, Green Bay & Western
CountryUSA
Whyte2-6-0
Number in Class2
Road Numbers38-39 / 257-258
GaugeStd
Number Built2
BuilderAlco-Schenectady
Year1914
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft)14
Engine Wheelbase (ft)21.83
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)122,000
Engine Weight (lbs)139,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)68
Geometry Relating to Tractive Effort
Driver Diameter (in)56
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)19" x 26"
Tractive Effort (lbs)25,644
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.76
Heating Ability
Firebox Area (sq ft)151
Grate Area (sq ft)30.20
Evaporative Heating Surface (sq ft)1225
Superheating Surface (sq ft)232
Combined Heating Surface (sq ft)1457
Evaporative Heating Surface/Cylinder Volume143.58
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5436
Same as above plus superheater percentage6306
Same as above but substitute firebox area for grate area31,529
Power L18010
Power MT434.24


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