Bangor & Aroostook 4-4-0 "American" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class H-2 (Locobase 6003)

Data out of BAR locomotive diagram book provided in April 2004 from Allen Stanley's extension collection.

American-type mixed-train locomotives with relatively tall drivers, small boiler, and underachieving tractive effort. 207-208 were similar, but slightly lighter. 209 was redesignated H-3 and, when the BAR guide was published, had a slightly larger boiler (1,050 sq ft) and grate (14.5 sq ft) and 63" drivers.

The builders' data comes from a table compiled by B. Rumary based on information from Jeremy Lambert and supplied by Allen Stanley in March 2004. Rumary-Lambert assign works #1596-1598 (September-October 1893), 1617 (November 1893), 1620-1623 (May-June 1894).

In 1907, the class was renumbered in two batches. 13-16 became 203-206 while 17-20 took 10-13 for some reason. 15 was scrapped relatively early in October 1914. 10, 11, and 13 all went in August 1929, 12 followed in December 1930 with 203 being scrapped a month later. All by itself, 204 hung on until February 1941.


Class K - 210 (Locobase 6001)

Data out of BAR locomotive diagram book provided in April 2004 from Allen Stanley's extension collection. Works numbers were 1592-1595 in 1893.

American-type mixed-train locomotives with relatively low drivers.

210-211received new, smaller boilers in 1919; the data in the specs come from that rebuild. 211 wound up on the Belfast & Moosehead Lake as their 16 after being sold December 1927.


Class K - 212 (Locobase 6002)

Data out of BAR locomotive diagram book provided in April 2004 from Allen Stanley's extension collection.

American-type mixed-train locomotives with relatively low drivers. This second pair of 4 originally delivered by Manchester in 1893 (works #1594-95). Unlike the two shown in Locobase 6001, these apparently didn't get new boilers. Like the 211, 213 went to Belfast & Moosehead Lake again as their #16 in September 1936.


Class K-1/K-2 (Locobase 5995)

Data out of BAR locomotive diagram book provided in April 2004 from Allen Stanley's extension collection.

This trio of Americans was rebuilt from a class of 4 Moguls that were originally delivered from Manchester in 1895-1896. Within practically the same wheelbase, the modifiers removed a driving axle and the front truck and substituted a front bogie truck. Also, the heating surface was increased by fitting 25 more tubes in the boiler.

It was a short-term solution as all 3 were retired in 1923-1924. K-2 engines 220-221 were virtually identical. They're shown on the diagrams as having been delivered in 1895 with works # (1545-46) just ahead of the Class A Moguls that provided the basis for the other three. Seems likely that these too were conversions.

NB: The direct heating surface (including the firebox heating surface) is an estimate calculated by subtracting the calculated tube heating surface from the reported total evaporative heating surface.

Specifications by Steve Llanso of Sweat House Media
ClassH-2K - 210K - 212K-1/K-2
Locobase ID6003 6001 6002 5995
RailroadBangor & AroostookBangor & AroostookBangor & AroostookBangor & Aroostook
CountryUSAUSAUSAUSA
Whyte4-4-04-4-04-4-04-4-0
Number in Class7425
Road Numbers13-19 / 203-209210-213212-213214-216, 220-221
GaugeStdStdStdStd
Number Built742
BuilderManchesterManchesterManchestershops
Year1893189318931915
Valve GearStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.449 / 2.749 / 2.749 / 2.74
Engine Wheelbase (ft / m)24.29 / 7.4023.67 / 7.2123.67 / 7.2124.42 / 7.44
Ratio of driving wheelbase to overall engine wheebase 0.33 0.38 0.38 0.37
Overall Wheelbase (engine & tender) (ft / m)44.12 / 13.4545.79 / 13.9645.79 / 13.9646.25 / 14.10
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)58,800 / 26,67164,600 / 29,30264,000 / 29,03078,100 / 35,426
Engine Weight (lbs / kg)93,600 / 42,456104,000 / 47,174100,000 / 45,359118,600 / 53,796
Tender Loaded Weight (lbs / kg)50,000 / 22,68055,000 / 24,94855,000 / 24,948118,600 / 53,796
Total Engine and Tender Weight (lbs / kg)143,600 / 65,136159,000 / 72,122155,000 / 70,307237,200 / 107,592
Tender Water Capacity (gals / ML)3000 / 11.363000 / 11.363000 / 11.363700 / 14.02
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)4 / 3.605 / 4.505 / 4.505 / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.5054 / 2753 / 26.5065 / 32.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)69 / 175363 / 160063 / 160067 / 1702
Boiler Pressure (psi / kPa)150 / 10.30160 / 11150 / 10.30160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x61018" x 24" / 457x61018" x 24" / 457x61018" x 24" / 457x610
Tractive Effort (lbs / kg)11,353 / 5149.6416,786 / 7614.0115,737 / 7138.1915,784 / 7159.51
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.18 3.85 4.07 4.95
Heating Ability
Firebox Area (sq ft / m2)139 / 12.92161 / 14.96193 / 17.94
Grate Area (sq ft / m2)13 / 1.2118 / 1.6718.90 / 1.7618.25 / 1.70
Evaporative Heating Surface (sq ft / m2)1129 / 104.931143 / 106.231513 / 140.611915 / 177.97
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1129 / 104.931143 / 106.231513 / 140.611915 / 177.97
Evaporative Heating Surface/Cylinder Volume202.15161.70214.05270.92
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1950288028352920
Same as above plus superheater percentage1950288028352920
Same as above but substitute firebox area for grate area20,85024,15030,880
Power L1563451657280
Power MT422.48355.84411.00