Delaware & Hudson 2-2-4 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Transit (Locobase 11154)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 200-201. See also D&H 1 - 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works number was 2806 in March 1889.

As small as this locomotive is, Locobase wondered if it was intended for street railways. But the illustration shows it lettered for a mainline railroad. In any case, the riders did not ride in Spartan conditions. "The inspector's room fitted with toilet-room complete, writing desk, three drawing-room car seats, one sofa, lamps, books, etc. The inside wood work is of mahogany, and the room is furnished in regular drawing-room-car style."

Yet there was a functional intent to this conveyance and Schenectady provided for that as well, installing heavy plate-glass windows in the door and to either side of the door that extended down to a foot off the floor, "...affording an unobstructed view of the track." And a large window separating the engineer from the inspectors allowed the former to see past their comfy chairs when the locomotive was running inspection-room forward.

The weights cited in the specifications are those supplied by Schenectady in their catalogue. The 1927 diagram book shows weight growth; weight on the single pair of drivers rose to 32,300 lb (14,651 kg) while engine weight climbed to 75,700 lb (34,337 kg).

Class Transit - rebuilt (Locobase 15920)

Data from D&H 1 - 1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase 11154 shows the Transit as it was delivered by Schenectady in 1899. As might have been guessed, this little inspection engine with the single set of drivers must have faltered when challenged by any kind of grade.

So the D&H updated the design more than twenty years later with a bigger firebox that included water tubes providing 7.94 sq ft (0.74 sq m) of additional heating surface area. Its drivers also gained two inches in diameter.

After another eleven years, the Transit was scrapped in September 1899.

Specifications by Steve Llanso of Sweat House Media
ClassTransitTransit - rebuilt
Locobase ID11,154 15,920
RailroadDelaware & HudsonDelaware & Hudson
Number in Class11
Road Numbers350/300300
Number Built1
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)
Engine Wheelbase (ft)26.2526.25
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft)2626.25
Axle Loading (Maximum Weight per Axle) (lbs)32,300
Weight on Drivers (lbs)26,00032,300
Engine Weight (lbs)63,00075,700
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)63,00075,700
Tender Water Capacity (gals)800700
Tender Fuel Capacity (oil/coal) (gals/tons) 2.25
Minimum weight of rail (calculated) (lb/yd)4354
Geometry Relating to Tractive Effort
Driver Diameter (in)5456
Boiler Pressure (psi)160200
High Pressure Cylinders (dia x stroke) (in)9" x 16"9" x 16"
Tractive Effort (lbs)32643934
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.97 8.21
Heating Ability
Firebox Area (sq ft)46.5071.21
Grate Area (sq ft)10.2016.47
Evaporative Heating Surface (sq ft)346383
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)346383
Evaporative Heating Surface/Cylinder Volume293.69325.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16323294
Same as above plus superheater percentage16323294
Same as above but substitute firebox area for grate area744014,242
Power L1707111,710
Power MT599.57799.26


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