According to the ACL's 1913 Locomotive Diagram supplied by Allen Stanley in May 2005 from his extensive collection, there were several subclasses. By 1913, the book only showed 8 locomotives. The 1942 edition shows a slightly larger firebox with 14 sq ft of fire brick tubes. It also notes that Baldwin delivered locomotives in 1894-95 and in 1896-1897.
| Specifications | |
|---|---|
| Class | I |
| Locobase ID | 1113 |
| Railroad | Atlantic Coast Line (ACL) |
| Whyte | 4-4-2 |
| Road Numbers | 151 |
| Gauge | Std |
| Builder | Burnham, Williams & Co |
| Year | 1894 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | 6.25' |
| Engine Wheelbase | 23.83' |
| Ratio of driving wheelbase to overall engine wheebase | 0.26 |
| Overall Wheelbase (engine & tender) | 50.33' |
| Axle Loading (Maximum Weight per Axle) | 40750 lbs |
| Weight on Drivers | 75990 lbs |
| Engine Weight | 129620 lbs |
| Tender Light Weight | 82800 lbs |
| Total Engine and Tender Weight | 212420 lbs |
| Tender Water Capacity | 2600 gals |
| Tender Fuel Capacity (oil/coal) | |
| Minimum weight per yard of rail on which locomotive could run | 63 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 72" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 19" x 24" |
| Tractive Effort | 18411 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.13 |
| Heating Ability | |
| Firebox Area | 161 sq. ft |
| Grate Area | 26.10 sq. ft |
| Evaporative Heating Surface | 2086 |
| Superheating Surface | |
| Combined Heating Surface | 2086 |
| Evaporative Heating Surface/Cylinder Volume | 264.86 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4698 |
| Same as above plus superheater percentage | 4698 |
| Same as above but substitute firebox area for grate area | 28980 |
| Power L1 | 7929 |
| Power MT | 460.07 |
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