Atlantic Coast Line 0-4-0 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 434 (Locobase 15033)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p. 206. See also Fowler (Ed.), 1912 Locomotive Cyclopedia (New York: Simmons-Boardman Co, 1912), pp. 156. (Thanks to Chris Hohl for his 8 February 2015 email informing Locobase of the coal capacity and a corrected engine weight, citing Baldwin works numbers were 25242 in March 1905 and 37913 in June 1912.

Fully enclosed as were most steam dummies, this packed a heftier power package than most such motive power units. Its tramcar-like body had six windows on each side, a short wheelbase and cylinder tucked under the floor, and the smokebox poking out through the front door and the stack sticking up through the roof.

According to Gene Connelly's Baldwin production file, both locomotives remained in service for decades. 1434 was scrapped in June 1950 and 1435 in July 1951.

Specifications by Steve Llanso of Sweat House Media
Locobase ID15033
RailroadAtlantic Coast Line
Number in Class2
Road Numbers434-435 / 1434-1435
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 6.50'
Engine Wheelbase 6.50'
Ratio of driving wheelbase to overall engine wheebase1
Overall Wheelbase (engine & tender) 6.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers95380 lbs
Engine Weight95380 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity1250 gals
Tender Fuel Capacity (oil/coal)0.65 tons
Minimum weight of rail (calculated)79 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)17" x 24"
Tractive Effort24118 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.95
Heating Ability
Firebox Area80.10 sq. ft
Grate Area20.20 sq. ft
Evaporative Heating Surface798 sq. ft
Superheating Surface
Combined Heating Surface798 sq. ft
Evaporative Heating Surface/Cylinder Volume126.57
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3636
Same as above plus superheater percentage3636
Same as above but substitute firebox area for grate area14418
Power L12509
Power MT115.99


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