Erie 0-8-0 "Switcher" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 57 (Locobase 12540)

Data from Angus Sinclair, Development of the Locomotive Engine (New York: Angus Sinclair Publishing, 1907), p.266. (Sinclair attributes the 1853 American Railway Journal article from which he derived the information to Zerah Colburn.) Works numbers were377

378 in June 1850.

Locobase 1022 describes Baldwin's flexible-beam truck. All four axles were powered, butthe front two were carried in a truck that allowed a parallelogram shift in alignment as the locomotive entered or left a curve. Sinclair observes (probably repeating Colburn) that the use of coupling rods on the drivers in this front truck "...would prevent any sensible vibration". Locobase isn't sure from the context whether Sinclair-Colburn thought the flexible-beam was unnecessary.

In any case, the pair served as pushers on 1.3% grades. The design still used a haystack firebox and very large and tall wood-burner's stack.

Gene Connelly's Baldwin list shows two more 0-8-0s following immediately. They had smaller drivers (46") and smaller cylinders (17" x 22"). Their works numbers were 379 in December 1850 and 380 in June 1851.

Boiler pressure is a Locobase estimate.


Class 88 (Locobase 12548)

Data from Angus Sinclair, Development of the Locomotive Engine (New York: Angus Sinclair Publishing, 1907), p.269. (Sinclair attributes the 1853 American Railway Journal article from which he derived the information to Zerah Colburn.)

Impressive cylinder volume for the time and small drivers, which undoubtedly reduced the pair's range.

Boiler pressure is a Locobase estimate.

Specifications by Steve Llanso of Sweat House Media
Class5788
Locobase ID12,540 12,548
RailroadErie (ERR)Erie (ERR)
CountryUSAUSA
Whyte0-8-00-8-0
Number in Class22
Road Numbers57-5888-89
Gauge6'6'
Number Built22
BuilderM W BaldwinRoss Winans
Year18501851
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)22,850 / 10,365
Weight on Drivers (lbs / kg)73,700 / 33,43056,000 / 25,401
Engine Weight (lbs / kg)73,700 / 33,43056,000 / 25,401
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.5023 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 121943 / 1092
Boiler Pressure (psi / kPa)100 / 6.90100 / 6.90
High Pressure Cylinders (dia x stroke) (in / mm)18.25" x 23" / 464x58419" x 22" / 483x559
Tractive Effort (lbs / kg)13,565 / 6152.9915,699 / 7120.96
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.43 3.57
Heating Ability
Firebox Area (sq ft / m2)67.50 / 6.2785.50 / 7.95
Grate Area (sq ft / m2)14 / 1.3020.25 / 1.88
Evaporative Heating Surface (sq ft / m2)1145 / 106.411004 / 93.31
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1145 / 106.411004 / 93.31
Evaporative Heating Surface/Cylinder Volume164.43139.07
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation14002025
Same as above plus superheater percentage14002025
Same as above but substitute firebox area for grate area67508550
Power L117031421
Power MT203.77223.77

Photos

Reference