Junction & Breakwater 4-4-0 "American" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class Rehoboth (Locobase 16232)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 8, p. 108. See also , American Railroad Journal, Volume 34, No. 8 (28 February 1878), p. 227. Works number was 4362 in June 1878.

The J&B ran from the Junction with the Delaware Railroad (later the site of Harrington, Del), through Georgetown and Milford to arrive at Lewes, Del's breakwater (40 miles/64 km) and was completed in 1869. Nine years later, the railroad added a 4 1/2 mile branch line to the grounds of the Rehoboth Beach Association, a religious camp community. A year later, the line inched further into Rehoboth City(later Rehoboth Beach). This little Eight-wheeler was clearly meant to commemorate that event.

In its report, the ARJ noted that "[a]fter the completion of the extension the trip from Philadelphia to Rehoboth, by way of the Philadelphia, Wilmngton & Baltimore, the Delaware, and Junction & Breakwater roads, can be made without a change of cars."

Another branch line by the Breakwater and Frankford (owned by the J&B) ended 19 miles (31 km) away at Selbyville

Specifications by Steve Llanso of Sweat House Media
ClassRehoboth
Locobase ID16,232
RailroadJunction & Breakwater
CountryUSA
Whyte4-4-0
Number in Class1
Road Numbers5
GaugeStd
Number Built1
BuilderBurnham, Parry, Williams & Co
Year1878
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.33 / 2.13
Engine Wheelbase (ft / m)20.96 / 6.58
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m) / 6.58
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg) / 22,680
Engine Weight (lbs / kg) / 32,659
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2000 / 2.65
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 1372
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)14" x 24" / 356x610
Tractive Effort (lbs / kg)9119 / 4136.31
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Firebox Area (sq ft / m2) / 5.76
Grate Area (sq ft / m2)12.80 / 1.09
Evaporative Heating Surface (sq ft / m2)724 / 67.29
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)724 / 67.29
Evaporative Heating Surface/Cylinder Volume169.31
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1664
Same as above plus superheater percentage1664
Same as above but substitute firebox area for grate area
Power L1
Power MT