Dallas & Oak Cliff Street Railway 2-4-4 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Oak Cliff (Locobase 11584)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 24.

Works numbers were 9865 in February 1889. See the Handbook of Texas -- [] and http://www.dallaspioneer.org/stories/historical.php?ID=281, last accessed on 8 August 2010.

The D & OCSR connected a new exclusive residential community to downtown Dallas on a right-of-way that was described as "the first elevated railway in the South" even though it ran mostly at ground level in a belt line around Dallas and Oak Cliff. Thomas L Marsalis and John J Armstrong envisioned a full-featured community in a setting that the "promotion certificate" promoted in 1890 as one that "...derives its name from the massive oaks that crown the soft green cliffs and stands about two hundred and fifty feet above and to the southward and westward of the city of Dallas, overlooking the city and the view is carried away over the city proper. Cool and healthful breezes prevail during the entire heated term and there is not a night in the hot months of summer when discomfort is felt from the heat, and sound and refreshing sleep is not possible. To the south and southwest for hundreds of miles stretches level and unobstructed prairie over whose bosom these breezes sweep from the Gulf without infection from any unsalubrious conditions."

Class Oak Cliff (Locobase 11624)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 90.

Works number was 10026 in Auguast 1889. See Locobase 11584 for information on this Texas street railway.

In every respect a much bigger locomotive than the one delivered just 5 months earlier, this street tank had as short a life on the D & OCSR. In 1893, it was sold to the Texas Midland and operated under the same road number for another 35 years before being scrapped.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassOak CliffOak Cliff
Locobase ID11,584 11,624
RailroadDallas & Oak Cliff Street RailwayDallas & Oak Cliff Street Railway
Number in Class11
Road Numbers34
Number Built11
BuilderBurnham, Parry, Williams & CoBurnham, Parry, Williams & Co
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.837 / 2.13
Engine Wheelbase (ft / m)24.50 / 7.4727.50 / 8.38
Ratio of driving wheelbase to overall engine wheebase 0.24 0.25
Overall Wheelbase (engine & tender) (ft / m)24.50 / 7.4727.50 / 8.38
Axle Loading (Maximum Weight per Axle) (lbs / kg)22,890 / 10,383
Weight on Drivers (lbs / kg)30,000 / 13,60842,220 / 19,151
Engine Weight (lbs / kg)56,000 / 25,40176,400 / 34,654
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)56,00076,400
Tender Water Capacity (gals / ML)700 / 2.65700 / 2.65
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.5035 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 111846 / 1168
Boiler Pressure (psi / kPa)150 / 10.30150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)12" x 20" / 305x50815" x 22" / 381x559
Tractive Effort (lbs / kg)8345 / 3785.2313,720 / 6223.29
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.59 3.08
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)10.80 / 113.70 / 1.27
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16202055
Same as above plus superheater percentage16202055
Same as above but substitute firebox area for grate area
Power L1
Power MT

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