Phillips & Rangely 0-4-4 "Forney" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Isaac Walton (Locobase 1008)

Data from (reviewed 13 Feb 2004) and 1934 Maine Central locomotive tables supplied by Allen Stanley in May 2005 from his extensive Raildata collection. See also DeGolyer, Volume 19, p. 1. Works number was 13276 in March 1893.

When delivered, the 2 had a slimmer, longer boiler containing 68 tubes, each 10 ft 9 1/2 in (3.29 m) long; the smaller firebox presented a 7.66 sq ft (0.71 sq m) grate area. Baldwin estimated the weights at 30,000 lb on the drivers, 40,000 for all four axles. Its adhesion wheelbase spanned 7 feet (2.13 m) ) and 12 ft 10 in (3.91 m) overall.

The P&R later was absorbed by the Sandy River & Rangely Lakes in 1908 and the 2 went to the successor as their 17. Rebuilt in 1915 to the specifications shown above (but withthe power dimensions (cylinder volume, boiler pressure, and driver diameter) unchanged), the two-footer ran until August 1936.

Specifications by Steve Llanso of Sweat House Media
ClassIsaac Walton
Locobase ID1008
RailroadPhillips & Rangely
Number in Class1
Road Numbers2 / 17
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)6
Engine Wheelbase (ft)18.25
Ratio of driving wheelbase to overall engine wheebase 0.33
Overall Wheelbase (engine & tender) (ft)18.25
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)34,000
Engine Weight (lbs)50,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)50,000
Tender Water Capacity (gals)800
Tender Fuel Capacity (oil/coal) (gals/tons) 1.10
Minimum weight of rail (calculated) (lb/yd)28
Geometry Relating to Tractive Effort
Driver Diameter (in)35
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)12" x 16"
Tractive Effort (lbs)8953
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.80
Heating Ability
Firebox Area (sq ft)44.60
Grate Area (sq ft) 8.90
Evaporative Heating Surface (sq ft)448
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)448
Evaporative Heating Surface/Cylinder Volume213.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1424
Same as above plus superheater percentage1424
Same as above but substitute firebox area for grate area7136
Power L12990
Power MT387.75


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