Denver & Berkeley Park Rapid Transit 0-4-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Berkeley (Locobase 11595)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 15, p. 40. Works number was 9895 in March 1889.

This street railway opened in 1888 to provide "noiseless" transport from Berkeley Lake in the newly developing Berkeley Park residential area along a 3 1/4-mile right-of-way to Gallup Ave in downtown Denver. By the time this steam dummy was delivered, traffic had grown to 3,000 passengers.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11,595
RailroadDenver & Berkeley Park Rapid Transit
Number in Class1
Road Numbers3
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 4.50
Engine Wheelbase (ft)11.67
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft)11.67
Axle Loading (Maximum Weight per Axle) (lbs)14,490
Weight on Drivers (lbs)26,690
Engine Weight (lbs)34,180
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)450
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)22
Geometry Relating to Tractive Effort
Driver Diameter (in)35
Boiler Pressure (psi)130
High Pressure Cylinders (dia x stroke) (in)11" x 16"
Tractive Effort (lbs)6112
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.37
Heating Ability
Firebox Area (sq ft)
Grate Area (sq ft) 9.60
Evaporative Heating Surface (sq ft)
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1248
Same as above plus superheater percentage1248
Same as above but substitute firebox area for grate area
Power L1
Power MT

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.