Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 77, pp. 652+. Works numbers were 60924-60926 in October 1929.
The IT contracted for this trio of Mikados in March 1929, only months before the big Crash of 1929 sent the economy spinning. Fittingly for a road that finally moved past Moguls in its motive power array and skipped Consolidations, the 30s' design was relatively small and light for a North American standard-gauge 2-8-2.
It was late enough in the game, however, for the road to include 76 sq ft (7.05 sq m) of thermic syphons in the firebox heating surface area, 14" (356 mm) piston valves,.and install a relatively large amount of superheater area.
All three served the IT until 1950, when the road's conversion to diesel-electric motive power resulted in 32's being sold for scrap in February followed by 31 in April and 30 in May.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 30 |
| Locobase ID | 14536 |
| Railroad | Illinois Terminal |
| Country | USA |
| Whyte | 2-8-2 |
| Number in Class | 3 |
| Road Numbers | 30-32 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Baldwin |
| Year | 1929 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15 / 4.57 |
| Engine Wheelbase (ft / m) | 33.58 / 10.24 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.45 |
| Overall Wheelbase (engine & tender) (ft / m) | 71.87 / 21.91 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 210,000 / 95,255 |
| Engine Weight (lbs / kg) | 262,000 / 118,841 |
| Tender Loaded Weight (lbs / kg) | 185,000 / 83,915 |
| Total Engine and Tender Weight (lbs / kg) | 447,000 / 202,756 |
| Tender Water Capacity (gals / ML) | 10,000 / 37.88 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 16 / 15 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 88 / 44 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 55 / 1397 |
| Boiler Pressure (psi / kPa) | 185 / 1280 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 25" x 30" / 635x762 |
| Tractive Effort (lbs / kg) | 53,608 / 24316.21 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.92 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 226 - 2" / 51 |
| Flues (number - dia) (in / mm) | 40 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 19.25 / 5.87 |
| Firebox Area (sq ft / m2) | 318 / 29.54 |
| Grate Area (sq ft / m2) | 66.60 / 6.19 |
| Evaporative Heating Surface (sq ft / m2) | 3665 / 340.49 |
| Superheating Surface (sq ft / m2) | 896 / 83.24 |
| Combined Heating Surface (sq ft / m2) | 4561 / 423.73 |
| Evaporative Heating Surface/Cylinder Volume | 215.08 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 12,321 |
| Same as above plus superheater percentage | 14,785 |
| Same as above but substitute firebox area for grate area | 70,596 |
| Power L1 | 13,255 |
| Power MT | 556.61 |