Houston & Brazos Valley 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class TN-60 - 27.8 (Locobase 7759)

Data from MP SUBS 7 - 1935 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

The H & BV bought the rights to the Velasco, Brazos and Northern Railway, which then consisted of 20 miles between Anchor and Velasco. Its 1924 acquisition by the New Orleans, Texas & Mexico was followed a year later by the latter's purchase by the Missouri Pacific. But the H & BV operated as a separate company for several decades more.

Specifications by Steve Llanso of Sweat House Media
ClassTN-60 - 27.8
Locobase ID7759
RailroadHouston & Brazos Valley (NOT & M/MP)
Number in Class1
Road Numbers310
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase13.50'
Engine Wheelbase24.50'
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender)53.92'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers129000 lbs
Engine Weight170700 lbs
Tender Light Weight98500 lbs
Total Engine and Tender Weight269200 lbs
Tender Water Capacity5000 gals
Tender Fuel Capacity (oil/coal)1929 gals
Minimum weight of rail (calculated)72 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter61"
Boiler Pressure180 psi
Cylinders (dia x stroke)19" x 28"
Tractive Effort25353 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.09
Heating Ability
Firebox Area175 sq. ft
Grate Area29.20 sq. ft
Evaporative Heating Surface2606 sq. ft
Superheating Surface
Combined Heating Surface2606 sq. ft
Evaporative Heating Surface/Cylinder Volume283.62
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5256
Same as above plus superheater percentage5256
Same as above but substitute firebox area for grate area31500
Power L16933
Power MT355.46

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