Lehigh & Hudson River 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 12980)

Data from DeGolyer, Volume 29, p. 115 and Volume 30, p.193. Works numbers were 28450 in June 1906; 30268-30269 in February 1907; 30416-30418, 30424 in March; 31502-31504, 31522, 31550-31551 in August.

This Ten-wheeler design had one of the lowest heating surface-firebox ratios in a conventional boiler because of the short tubes laid ahead of the spacious Wootten firebox.

As the class was withdrawn beginning in the 1920s, three of them went to the Middletown & Unionville. The M & U had succeeded to the property of the Middletown, Unionville & Water Gap railroad in 1913. It was a 14.5 bridge line in that straddled the New Jersey-New York border and survived for 30 years on agricultural and coal traffic, with some passenger service mixed in. In 1919, it was reported to have amassed over 500,000 passenger miles and taken in $15,601 in passenger revenue. Freight revenue was nearly 4 times as great on 651,617 ton-miles of traffic.

The 23 was sold to the shortline on 1 October 1922 and sold off the property on 30 December 1930. 33 had the shortest second career - the M & U bought the engine on 1 September 1924 and sold it on 1 December 1927. 32 had arrived on the M & U only 3 months earlier as a result of a 1 September 1927 purchase. It would be sold on the same day as the 23.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12980
RailroadLehigh & Hudson River
Number in Class13
Road Numbers20, 23-34
Number Built13
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase12'
Engine Wheelbase22.92'
Ratio of driving wheelbase to overall engine wheebase 0.52
Overall Wheelbase (engine & tender)51'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers115000 lbs
Engine Weight146000 lbs
Tender Light Weight72000 lbs
Total Engine and Tender Weight218000 lbs
Tender Water Capacity3600 gals
Tender Fuel Capacity (oil/coal)10 tons
Minimum weight of rail (calculated)64 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter64"
Boiler Pressure200 psi
Cylinders (dia x stroke)21" x 26"
Tractive Effort30457 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.78
Heating Ability
Firebox Area174 sq. ft
Grate Area81.60 sq. ft
Evaporative Heating Surface1862 sq. ft
Superheating Surface
Combined Heating Surface1862 sq. ft
Evaporative Heating Surface/Cylinder Volume178.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16320
Same as above plus superheater percentage16320
Same as above but substitute firebox area for grate area34800
Power L15592
Power MT321.61

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