Alabama's WIC continued its growth, adding a third blast furnace in 1905 and soon increasing its capacity to 250,000 tons annually. This early Mikado represented a jump in power on the WIC's rails.
Steady increases in tonnage demands along the network of roads leading to the blast furnaces from the coal fields eight miles to the south and the iron mines eight miles toward the north. Thus, even the 2-8-2 described in Locobase 12693 wasn't enough Mikado for the new demands.
28's boiler almost certainly had the greatest evaporative heating surface area of any saturated-steam Mikado supplied to a US road and consequently the largest of any 2-8-2. In fact, this vessel seems to have contained the greatest EHS of any rigid-wheelbase engine other than four 2-10-4 classes that also had considerable amounts of superheat. A 1920s photo reproduced in the University of Alabama Libraries Digital Collection's holding of Woodward Iron images shows the slide valves, massive construction, and two oversized sandboxes flanking the steam dome.
The Baldwin specification entry is explicit about the destination of this engine. WIC was described as having 80 lb/yard (40 kg/metre) rail and some sections of poor track. This behemoth served the WIC for just over 30 years before being scrapped in 1943.
By 1912, buying Mikados in North America without superheaters was quite rare. But Woodward Iron seems to have happy with its middle-sized, low-drivered, saturated-boiler 2-8-2s (see Locobases 12694-12695) and settled for a slightly higher pressure boiler, more weight on the drivers, and a tweak of the firebox area.
According to the Southern's account, the WIC had recently added complex new capabilities to its traditional mix: "In 1911, another of the company's giant forward steps resulted, upon completion of its first battery of 60 by-product coke ovens (an additional 80 ovens were built the following year) .Where before only coke had been obtained from the old-fashioned beehive ovens, the company could with the new ovens extract and sell coal chemicals such as coke oven tar, ammonium sulphate, toluene, xylene, napthalene, pyridine, benzol and crude heavy solvent. Later, coke oven gas not used in company operations was sold to neighboring industries."
Its 1912 acquisition of Birmingham Coal & Iron opened access to the BC&I's sizable coal reserves.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Woodward Iron Company||Woodward Iron Company||Woodward Iron Company||Woodward Iron Company|
|Number in Class||1||1||1||3|
|Road Numbers||14||19, 26||28||29-31|
|Builder||Burnham, Williams & Co||Burnham, Williams & Co||Baldwin||Baldwin|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||12 / 3.66||14.50 / 4.42||16 / 4.88||14.50 / 4.42|
|Engine Wheelbase (ft / m)||25.67 / 7.82||29 / 8.84||35.17 / 10.72||29 / 8.84|
|Ratio of driving wheelbase to overall engine wheebase||0.47||0.50||0.45||0.50|
|Overall Wheelbase (engine & tender) (ft / m)||51.95 / 15.83||57.83 / 17.63||67.08 / 20.45||57.83 / 17.63|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||144,000 / 65,317||173,000 / 78,472||220,000 / 99,790||178,200 / 80,830|
|Engine Weight (lbs / kg)||179,000 / 81,193||209,700 / 95,118||245,000 / 111,130||210,050 / 95,277|
|Tender Loaded Weight (lbs / kg)||120,000 / 54,431||140,000 / 63,503||160,000 / 72,575||140,000 / 63,503|
|Total Engine and Tender Weight (lbs / kg)||299,000 / 135,624||349,700 / 158,621||405,000 / 183,705||350,050 / 158,780|
|Tender Water Capacity (gals / ML)||6000 / 22.73||7000 / 26.52||8000 / 30.30||7000 / 26.52|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||11 / 10||14 / 12.70||11 / 10|
|Minimum weight of rail (calculated) (lb/yd / kg/m)||60 / 30||72 / 36||92 / 46||74 / 37|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||46 / 1168||51 / 1295||57 / 1448||51 / 1295|
|Boiler Pressure (psi / kPa)||180 / 11||200 / 13.80||210 / 14.50||210 / 14.50|
|High Pressure Cylinders (dia x stroke) (in / mm)||21" x 24" / 533x610||22" x 28" / 559x711||24.5" x 30" / 622x762||22" x 28" / 559x711|
|Tractive Effort (lbs / kg)||35,203 / 15967.83||45,173 / 20490.15||56,392 / 25579.01||47,432 / 21514.82|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.09||3.83||3.90||3.76|
|Firebox Area (sq ft / m2)||187 / 17.38||182.30 / 16.94||245 / 22.77||185 / 17.19|
|Grate Area (sq ft / m2)||33 / 3.07||57 / 5.30||75 / 6.97||57 / 5.30|
|Evaporative Heating Surface (sq ft / m2)||2505 / 232.81||3300 / 306.69||6036 / 560.97||3303 / 306.97|
|Superheating Surface (sq ft / m2)|
|Combined Heating Surface (sq ft / m2)||2505 / 232.81||3300 / 306.69||6036 / 560.97||3303 / 306.97|
|Evaporative Heating Surface/Cylinder Volume||260.36||267.88||368.74||268.12|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||5940||11,400||15,750||11,970|
|Same as above plus superheater percentage||5940||11,400||15,750||11,970|
|Same as above but substitute firebox area for grate area||33,660||36,460||51,450||38,850|