Florida Central & Peninsular / South Bound 2-6-0 "Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class M55-E11 (Locobase 9363)

Data from SAL 9 - 1918 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See Locobase 9351 for a description for the elegant diagrams that held the data for these locomotives.

A trio of Richmond Moguls (work numbers 2158-2160) intended for freight work. The design had a the typical pinched first course swelling into full diameter just ahead of the second driven axle. The extended smokebox looked like an afterthought.


Class M55-E11 (Locobase 9371)

Data from DeGolyer, Volume 17, p.110 and SAL 1907 Locomotive Diagrams supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange. See Locobase 9351 for a description for the elegant diagrams that held the data for these locomotives. Works numbers were 12232-12233 in October 1891.

This pair of Moguls went to the SB RR in the year it completed its main line from Columbia, SC to Savannah, Ga.

When the Florida Central & Peninsular leased the railroad in 1893, it renumbered the pair as 216-217. The SAL later renumbered them 371-372. Their diagram showed a new firebox heating surface area reduced to 124.83 sq ft (9.74 sq m) and a grate area measuring 16.78 sq ft (1.56 sq m). The boiler then held 251 tubes and each was 13" (381 mm) longer. Total evaporative heating surface area now encompassed 1,571.56 sq ft (146.0 sq m).

In July 1917, 371 was sold to Georgia Car & Locomotive for switching duties.


Class M55-E12 (Locobase 9364)

Data from SAL 9 - 1918 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See Locobase 9351 for a description for the elegant diagrams that held the data for these locomotives.

Three years after the FC & P took delivery of a trio of Virginia-made Moguls, they went back to the builder for two more (work numbers 2333-2334). Compared to the earlier locomotives, this duo had smaller boilers and fireboxes, but a little more weight on the drivers.

Specifications by Steve Llanso of Sweat House Media
ClassM55-E11M55-E11M55-E12
Locobase ID9363 9371 9364
RailroadFlorida Central & Peninsular (SAL)South Bound (SAL)Florida Central & Peninsular (SAL)
CountryUSAUSAUSA
Whyte2-6-02-6-02-6-0
Number in Class322
Road Numbers204-206 / 356-3587-8/216-217 / 371-372218-219 / 373-374
GaugeStdStdStd
Number Built322
BuilderRichmondBurnham, Williams & CoRichmond
Year189118911894
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.33 / 4.6715.17 / 4.6215.33 / 4.67
Engine Wheelbase (ft / m)23.17 / 7.0623.50 / 7.1623.21 / 7.07
Ratio of driving wheelbase to overall engine wheebase 0.66 0.65 0.66
Overall Wheelbase (engine & tender) (ft / m)47.33 / 14.4347.25 / 14.4050.46 / 15.38
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)88,000 / 39,91684,000 / 38,10290,000 / 40,823
Engine Weight (lbs / kg)105,000 / 47,627100,000 / 45,359103,000 / 46,720
Tender Loaded Weight (lbs / kg)61,600 / 27,94165,800 / 29,84663,000 / 28,576
Total Engine and Tender Weight (lbs / kg)166,600 / 75,568165,800 / 75,205166,000 / 75,296
Tender Water Capacity (gals / ML)3200 / 12.123300 / 12.503200 / 12.12
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.5047 / 23.5050 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 129555 / 139751 / 1295
Boiler Pressure (psi / kPa)140 / 9.70140 / 9.70150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61019" x 24" / 483x61018" x 24" / 457x610
Tractive Effort (lbs / kg)18,144 / 8229.9918,746 / 8503.0519,440 / 8817.85
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.85 4.48 4.63
Heating Ability
Firebox Area (sq ft / m2)130.47 / 12.13128.30 / 11.92113.77 / 10.57
Grate Area (sq ft / m2)20.17 / 1.8717.10 / 1.5920.60 / 1.91
Evaporative Heating Surface (sq ft / m2)1377 / 127.971532 / 142.331444 / 134.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1377 / 127.971532 / 142.331444 / 134.20
Evaporative Heating Surface/Cylinder Volume194.81194.52204.28
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation282423943090
Same as above plus superheater percentage282423943090
Same as above but substitute firebox area for grate area18,26617,96217,066
Power L1341635423631
Power MT256.74278.88266.83

Reference