Coudersport & Port Allegany 4-4-0 "American" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 16141)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 15, p. 53. Works numbers were 9990-9991 in May 1889.

See Locobase 13124 for a brief description of this northwest Pennsylvania common carrier.

The 1 was sold in 1897 to Norfolk, Virginia Beach & Southern as their #6. When the NVB&S was incorporated into the Norfolk & Southern in 1899, the 6 was renumbered 26 and placed in the N&S's class B-4. It remained on the N&S until its retirement in October 1925.

The 2 was sold to the Palmer Stave Company in New Hampshire. Its last known operator was the New Hampshire Stave & Heading Mill at least until 1923.

NB: Locobase 11579 describes an Atlantic & Danville trio of locomotives with identical firebox dimensions (69 7/16" long, 34 3/8" wide, 65 1/2" deep in front, 64 1/2" deep in back). Locobase bases his estimate of the P&CA pair's firebox heating surface area on the known quantity given in Locobase 11579.)


Class 6 (Locobase 13125)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p. 54. Works number was 36171 in February 1911.

This little American is fondly remembered by those who rode the C&PA; see Locobase 13124 for a brief description of this northwest Pennsylvania common carrier.

The 6 served the line until 1946.

NB: The DeGolyer catalogue showed the specs as residing in Volume 46. It wasn't until Locobase thought of looking into volumes by date of order that I found their error.

Specifications by Steve Llanso of Sweat House Media
Class16
Locobase ID16,141 13,125
RailroadCoudersport & Port AlleganyCoudersport & Port Allegany
CountryUSAUSA
Whyte4-4-04-4-0
Number in Class21
Road Numbers1-26
GaugeStdStd
Number Built21
BuilderBurnham, Parry, Williams & CoBaldwin
Year18891911
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.25 / 2.51 9.08 / 2.77
Engine Wheelbase (ft / m)22.17 / 6.7623.08 / 7.03
Ratio of driving wheelbase to overall engine wheebase 0.37 0.39
Overall Wheelbase (engine & tender) (ft / m)45.58 / 13.8945.67 / 13.92
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)50,000 / 22,68067,000 / 30,391
Engine Weight (lbs / kg)74,000 / 33,566104,000 / 47,174
Tender Loaded Weight (lbs / kg)75,000 / 34,019
Total Engine and Tender Weight (lbs / kg)179,000 / 81,193
Tender Water Capacity (gals / ML)2400 / 9.853600 / 13.64
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2156 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 157562 / 1575
Boiler Pressure (psi / kPa)130 / 9180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x61017" x 24" / 432x610
Tractive Effort (lbs / kg)12,362 / 5607.3217,116 / 7763.70
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.04 3.91
Heating Ability
Firebox Area (sq ft / m2)121138 / 12.83
Grate Area (sq ft / m2)16.53 / 1.5418 / 1.67
Evaporative Heating Surface (sq ft / m2)11811465 / 136.15
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)11811465 / 136.15
Evaporative Heating Surface/Cylinder Volume187.31232.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation21493240
Same as above plus superheater percentage21493240
Same as above but substitute firebox area for grate area15,73024,840
Power L138056357
Power MT335.54418.35