San Bernadino & Redlands 0-4-2 Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class Redlands (Locobase 16237)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 14, p. 242; and SP Menke All-Time Steam Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 9746 in January 1889.

The original 1888 specs show a very similar steam dummy intended to run on the 25 lb/yard (12.5kg/metre) rail. It burned coal and had 54 tubes in the boiler. The data show the 2 as rebuilt after a December 1891 fire. Renumbered 1, it now burned oil.

Leased in 1892 by the Southern Pacific as a car service dummy, the 1 operated until 1916.

Specifications by Steve Llanso of Sweat House Media
ClassRedlands
Locobase ID16,237
RailroadSan Bernadino & Redlands (SP)
CountryUSA
Whyte0-4-2T
Number in Class1
Road Numbers2/1
Gauge3'
Number Built1
BuilderBurnham, Parry, Williams & Co
Year1889
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)4 / 1.22
Engine Wheelbase (ft / m)11.33 / 3.45
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m)11.33 / 3.45
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)23,000 / 10,433
Engine Weight (lbs / kg)32,650 / 14,810
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)395 / 1.50
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)245 / 0.90
Minimum weight of rail (calculated) (lb/yd / kg/m)19 / 9.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)35 / 889
Boiler Pressure (psi / kPa)110 / 7.60
High Pressure Cylinders (dia x stroke) (in / mm)10" x 14" / 254x356
Tractive Effort (lbs / kg)3740 / 1696.44
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.15
Heating Ability
Firebox Area (sq ft / m2)44 / 4.09
Grate Area (sq ft / m2)7 / 0.65
Evaporative Heating Surface (sq ft / m2)179 / 16.63
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)179 / 16.63
Evaporative Heating Surface/Cylinder Volume140.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation770
Same as above plus superheater percentage770
Same as above but substitute firebox area for grate area4840
Power L12012
Power MT385.71

Reference