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 Wheelbase (ft)13.50
Engine Wheelbase (ft)24.50
Ratio of driving wheelbase to overall engine wheebase 0.55
Overall Wheelbase (engine & tender) (ft)53.92
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)129,000
Engine Weight (lbs)170,700
Tender Loaded Weight (lbs)98,500
Total Engine and Tender Weight (lbs)269,200
Tender Water Capacity (gals)5000
Tender Fuel Capacity (oil/coal) (gals/tons)1929
Minimum weight of rail (calculated) (lb/yd)72
Geometry Relating to Tractive Effort
Driver Diameter (in)61
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)19" x 28"
Tractive Effort (lbs)25,353
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.09
Heating Ability
Firebox Area (sq ft)175
Grate Area (sq ft)29.20
Evaporative Heating Surface (sq ft)2606
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)2606
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 area31,500
Power L16933
Power MT355.46

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