Mobile & Gulf 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 16635)

Data from American Locomotive Company data card Class, 280 141, supplied in October 2022 by Ellis Tammelleo's Locomotive Dossier on Google Drive. M&NF history from Thomas Lawson's 1992 roster notes, which were based on earlier research by Elmer G Sulzer. Works number was 65191 in August 1923.

(Note on provenance: This engine and four more originally entered the production line in Paterson, NJ as a quintet destined for the EF de Dourado in Brazil. When the class was almost ready for shipment, the railway cancelled the order and Cooke listed them as stock. Although the data is the same throughout, Locobase offers entries for all five because of their varied histories. See Locobase 16603, 16632, 16633, 16634, 16635.)

Like the other four engines in this abandoned batch, the last of them didn't find a new owner for years, Finally, in May 1926, WP Brown and Sons Lumber Company bought the engine to run on their M&G line out of Fayette, Ala..

The M&G sold the 10 in May 1939 to Clearfield, Ky-based Moorehead & North Fork , which retained the road number. Even after fifteen years later in 1954, the M&NF mechanics pulled the 10 into the shop to overhaul her running gear presumably to get even more years out of her. A closer inspection revealed her frame had cracked and they had to scrap her.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID16635
RailroadMobile & Gulf
Number in Class1
Road Numbers10
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14 / 4.27
Engine Wheelbase (ft / m)22 / 6.71
Ratio of driving wheelbase to overall engine wheelbase 0.64
Overall Wheelbase (engine & tender) (ft / m)52.19 / 15.91
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)122,000 / 55,338
Engine Weight (lbs / kg)141,000 / 63,957
Tender Loaded Weight (lbs / kg)121,000 / 54,885
Total Engine and Tender Weight (lbs / kg)262,000 / 118,842
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)10 / 9
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 26" / 483x660
Tractive Effort (lbs / kg)29,918 / 13570.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08
Heating Ability
Tubes (number - dia) (in / mm)140 - 2" / 51
Flues (number - dia) (in / mm)21 - 5.375" / 137
Flue/Tube length (ft / m)12.50 / 3.81
Firebox Area (sq ft / m2)134 / 12.45
Grate Area (sq ft / m2)30 / 2.79
Evaporative Heating Surface (sq ft / m2)1410 / 130.99
Superheating Surface (sq ft / m2)287 / 26.66
Combined Heating Surface (sq ft / m2)1697 / 157.65
Evaporative Heating Surface/Cylinder Volume165.30
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5400
Same as above plus superheater percentage6318
Same as above but substitute firebox area for grate area28,220
Power L17872
Power MT569.01

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Wes Barris