Firebox heating surface area included 123 sq ft of thermic syphons (3), 30 sq ft in arch tubes, and a combustion chamber contributing 107 sq ft. Piston valves measured 15" in diameter.
Built in several series from 1929 to 1944, all but 10 (Alco) built by Baldwin; data is for last batch. The weights and other dimensions didn't vary by all that much and all subclasses were simply huge, powerful locomotives. Boiler evaporative capacity was 84,300 lb per hour. At 250 psi and 250 degrees of superheat, boiler hp was over 4,600.
Eighteen of these were later sold to the DM&IR as E-4s with road numbers 700-717.
| Specifications | |
|---|---|
| Class | H1A to H1G |
| Locobase ID | 93 |
| Railroad | Bessemer & Lake Erie |
| Whyte | 2-10-4 |
| Road Numbers | 601-647 |
| Gauge | Std |
| Builder | Several |
| Year | 1929 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 22.30' |
| Engine Wheelbase | 45.50' |
| Ratio of driving wheelbase to overall engine wheebase | 0.49 |
| Overall Wheelbase (engine & tender) | 95.22' |
| Axle Loading (Maximum Weight per Axle) | 75984 lbs |
| Weight on Drivers | 372277 lbs |
| Engine Weight | 524440 lbs |
| Tender Light Weight | 382550 lbs |
| Total Engine and Tender Weight | 906990 lbs |
| Tender Water Capacity | 23000 gals |
| Tender Fuel Capacity (oil/coal) | 26 tons |
| Minimum weight per yard of rail on which locomotive could run | 124 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 64" |
| Boiler Pressure | 250 psi |
| Cylinders (dia x stroke) | 31" x 32" |
| Tractive Effort | 102106 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.65 |
| Heating Ability | |
| Firebox Area | 576 sq. ft |
| Grate Area | 106.50 sq. ft |
| Evaporative Heating Surface | 5912 |
| Superheating Surface | 2487 |
| Combined Heating Surface | 8399 |
| Evaporative Heating Surface/Cylinder Volume | 211.49 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 26625 |
| Same as above plus superheater percentage | 34613 |
| Same as above but substitute firebox area for grate area | 187200 |
| Power L1 | 29739 |
| Power MT | 880.57 |
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