Data from 1952 Interstate diagram book provided by Allen Stanley from his extensive Rail Data Exchange in March 2004.
Can't tell anything about when this locomotive came to the Interstate. In fact, it appears that this was a proposal from Baldwin for a single Eight-wheeler that was never actually produced. Firebox heating surface included 12 sq ft (1.12 sq m) of brick arch.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Reply to RFP? |
| Locobase ID | 6075 |
| Railroad | Interstate (IRR) |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Baldwin |
| Year | 1916 |
| Valve Gear | Southern |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8 / 2.44 |
| Engine Wheelbase (ft / m) | 23 / 7.01 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | 58.83 / 17.93 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 98,000 / 44,452 |
| Engine Weight (lbs / kg) | 147,000 / 66,678 |
| Tender Loaded Weight (lbs / kg) | 100,000 / 45,359 |
| Total Engine and Tender Weight (lbs / kg) | 247,000 / 112,037 |
| Tender Water Capacity (gals / ML) | 5000 / 18.94 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 / 9 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 82 / 41 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 66 / 1676 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 24" / 508x610 |
| Tractive Effort (lbs / kg) | 24,727 / 11215.99 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.96 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 181 - 2" / 51 |
| Flues (number - dia) (in / mm) | 28 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 12 / 3.66 |
| Firebox Area (sq ft / m2) | 168 / 15.61 |
| Grate Area (sq ft / m2) | 31 / 2.88 |
| Evaporative Heating Surface (sq ft / m2) | 1780 / 165.43 |
| Superheating Surface (sq ft / m2) | 376 / 34.94 |
| Combined Heating Surface (sq ft / m2) | 2156 / 200.37 |
| Evaporative Heating Surface/Cylinder Volume | 203.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6200 |
| Same as above plus superheater percentage | 7254 |
| Same as above but substitute firebox area for grate area | 39,312 |
| Power L1 | 15,130 |
| Power MT | 680.73 |