Data from diagram supplied by Chris Hohl,citingWesting, Frederick Westing and Alvin A Staufer, Alvin A., Erie Power: Steam and Diesel Locomotives of the Erie Railroad from 1840 to 1970 (Medina, Ohio: 1970). p. 335. Thanks to Chris Hohl for his 2017 and 2018 emails suggesting this entry and supplying data and diagrams.
Drawn up in late 1929 (25 October), Baldwin's proposed 16-56 2/4 F design seems to have been derived from those sold to the Chicago, Burlington & Quincy's M-4s (Locobase 96) delivered in 1927 and the Bessemer & Lake Erie series production of which began in 1929 (Locobase 93). It also may have represented a retrenchment after the earlier submission of a 2-6-6-4 described in Locobase 11024.
While the power dimensions were nearly identical to the other 2-10-4s, Chris Hohl noted that the Erie Texas type would have rolled on the tallest drivers of any Texas type. Locobase wonders why Baldwin recommended express-passenger-sized drivers, which Chris Hohl noted left the engine the "weakest" in terms of starting tractive effort. Certainly the boiler, firebox, and grate would have supplied plenty of steam, but counterbalancing issues, and dynamic augent issues could have presented serious problems.
Steam generation seems to have come front and center. The longer boiler raised available heating surface areas.The already enormous firebox had its direct heating surface area augmented by 128 sq ft (11.89 sq m) in the combustion chamber, 151 sq ft (14.03 sq m) in three Nicholson thermic syphons distributed between the firebox and the combustion chamber, and 28 sq ft (2.60 sq m) in arch tubes.
Additional mod-cons included a cast steel frame, multiple throttle, Standard Type B stoker, feed water heater, and trailing truck booster.
Locobase suspects that the Erie was more than satisfied with its run of S-class 2-8-4s (Locobases 58-60 and 9242). Moreover, late October sent the first shivers of an economic downturn that would spiral into the Great Depression.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Proposed 2-10-4 |
| Locobase ID | 16367 |
| Railroad | Erie (ERR) |
| Country | USA |
| Whyte | 2-10-4 |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Baldwin |
| Year | 1929 |
| Valve Gear | Baker |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 26.33 / 8.03 |
| Engine Wheelbase (ft / m) | 52.25 / 15.93 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | 100.77 / 30.71 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 375,000 / 170,097 |
| Engine Weight (lbs / kg) | 560,000 / 254,012 |
| Tender Loaded Weight (lbs / kg) | 366,000 / 166,015 |
| Total Engine and Tender Weight (lbs / kg) | 926,000 / 420,027 |
| Tender Water Capacity (gals / ML) | 28,000 / 81.44 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 28 / 22 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 125 / 62.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 77 / 1956 |
| Boiler Pressure (psi / kPa) | 260 / 1790 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 31" x 32" / 787x813 |
| Tractive Effort (lbs / kg) | 88,262 / 40035.02 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.25 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 61 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | 224 - 3.5" / 89 |
| Flue/Tube length (ft / m) | 24 / 7.32 |
| Firebox Area (sq ft / m2) | 626 / 58.16 |
| Grate Area (sq ft / m2) | 117.50 / 10.92 |
| Evaporative Heating Surface (sq ft / m2) | 6388 / 593.46 |
| Superheating Surface (sq ft / m2) | 2840 / 263.84 |
| Combined Heating Surface (sq ft / m2) | 9228 / 857.30 |
| Evaporative Heating Surface/Cylinder Volume | 228.55 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 30,550 |
| Same as above plus superheater percentage | 40,021 |
| Same as above but substitute firebox area for grate area | 213,216 |
| Power L1 | 41,876 |
| Power MT | 1230.94 |