Rumford Falls & Rangeley Lakes 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12169)

Data from Baldwin Locomotive Works Specification for Engines, 1890, as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 38. Works numbers were 14494 in October 1895 and 14955 in July 1896.

These locomotives were identical except that the 4 had bigger side tanks that held 1,600 gallons of water.

The RF & RL covered 38.7 miles of standard gauge from Rumford, where it met with its parent Portland & Rumford Falls, to Kennebago farm on the shore of Lake Mooselucmaguntic.

In 1903, the Portland & Rumford Falls renumbered these tanks 51-52. Four years later, the Maine Central leased the P & RF and RF & RL for 999 years, which resulted in another renumbering.

The MEC didn't hang on to 112, selling it to International as their #6 in September 1907. 113 remained with the railroad until it was scrapped in May 1919.


Class 2 (Locobase 12170)

Data from Baldwin Locomotive Works Specification for Engines, 1890, as digitized by the DeGolyer Library of Southern Methodist University Vol 20, p. 39. Works number was 14494 in October 1895.

In 1903, Portland & Rumford Falls renumbered this tank 53. In 1907, Four years later, the Maine Central leased the P & RF and RF & RL for 999 years, which resulted in another renumbering. Unlike the 2-6-2T shown in Locobase 12169, however, the MEC held onto the 162, converting it to a 2-6-2T and placing in its own class F.

After another 9 years of service, the 162 was scrapped in September 1916.

Specifications by Steve Llanso of Sweat House Media
Class12
Locobase ID12169 12170
RailroadRumford Falls & Rangeley LakesRumford Falls & Rangeley Lakes
CountryUSAUSA
Whyte2-6-2T2-6-2
Number in Class21
Road Numbers1, 4 / 51-52 / 112-1132 / 53 / 162
GaugeStdStd
Number Built21
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year18951895
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase10'12.50'
Engine Wheelbase25.75'19.75'
Ratio of driving wheelbase to overall engine wheebase 0.39 0.63
Overall Wheelbase (engine & tender)25.75'46.08'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers80000 lbs86000 lbs
Engine Weight100000 lbs100000 lbs
Tender Light Weight
Total Engine and Tender Weight100000 lbs
Tender Water Capacity1400 gals3200 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)44 lb/yard48 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"56"
Boiler Pressure160 psi160 psi
Cylinders (dia x stroke)16" x 24"18" x 24"
Tractive Effort18991 lbs18885 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.21 4.55
Heating Ability
Firebox Area75.20 sq. ft115 sq. ft
Grate Area14.40 sq. ft21 sq. ft
Evaporative Heating Surface1034 sq. ft1338 sq. ft
Superheating Surface
Combined Heating Surface1034 sq. ft1338 sq. ft
Evaporative Heating Surface/Cylinder Volume185.14189.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23043360
Same as above plus superheater percentage23043360
Same as above but substitute firebox area for grate area1203218400
Power L129624041
Power MT244.88310.77


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