Relatively lightweight Pacific class that capped the Florida East Coast's acquisition of 87 4-6-2s of similar dimension from 1907-1922. Fitted with 11" piston valves and a boiler measuring 61" diameter at the first course. The earlier locomotives, procured in 1910-1917, were all superheated to the same standard.
One of these oil burners operated out on Henry Flagler's Florida Keys viaduct and just made it off the exposed line before the 1938 Hurricane swept the entire line away. Most of these engines were sold to other railroads in the late 30s-early 40s. Georgia & Florida took 3, Columbia, Newberry & Laurens bought 2.
The first in a long line of FEC Pacifics over a 15-year period. Other than an increase in cylinder diameter and the introduction of superheating, all of the locomotives were very similar in size and weight. By 1926, five -- 65, 80, 83, 90, and 96 -- had been fitted with 22" cylinders. When superheated, the tube/flue ratio became 146 2" tubes/21 5 3/8" flues. This made them essentially identical with the 98s (see Locobase 6674).
Most were scrapped in 1929-1930, although #69 went to the Georgia Northern as their 106. And many others went to the Atlanta, Birmingham & Coast in 1930; these were superheated and are described in Locobase 7609.
The American Engineer & Railroad Journal (February 1908) noted that using the Walschaerts valve motion on the Pacific wheel arrangement offered difficulties because the front driving axle was so close to the cylinder. The article described Schenectady's solution was "one of the simplest and the best".
| Specifications | ||
|---|---|---|
| Class | 151 | 65 |
| Locobase ID | 3138 | 5716 |
| Railroad | Florida East Coast | Florida East Coast |
| Whyte | 4-6-2 | 4-6-2 |
| Road Numbers | 77-136, 141-157 | 65-74, 77-97 |
| Gauge | Std | Std |
| Builder | Alco | Alco-Schenectady |
| Year | 1910 | 1907 |
| Valve Gear | Walschaert | Walschaert |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 12.33' | 12.33' |
| Engine Wheelbase | 32.59' | 32.58' |
| Ratio of driving wheelbase to overall engine wheebase | 0.38 | 0.38 |
| Overall Wheelbase (engine & tender) | 63.54' | 60.17' |
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 126500 lbs | 125000 lbs |
| Engine Weight | 204000 lbs | 198500 lbs |
| Tender Light Weight | 162000 lbs | 141000 lbs |
| Total Engine and Tender Weight | 366000 lbs | 339500 lbs |
| Tender Water Capacity | 7300 gals | 6000 gals |
| Tender Fuel Capacity (oil/coal) | 3500 gals | 3500 gals |
| Minimum weight per yard of rail on which locomotive could run | 70.28 lb rail | 69.44 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 68" | 68" |
| Boiler Pressure | 180 psi | 200 psi |
| Cylinders (dia x stroke) | 22" x 26" | 20" x 26" |
| Tractive Effort | 28314 lbs | 26000 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.47 | 4.81 |
| Heating Ability | ||
| Firebox Area | 160 sq. ft | 160.40 sq. ft |
| Grate Area | 47.10 sq. ft | 46.80 sq. ft |
| Evaporative Heating Surface | 2111 | 2571 |
| Superheating Surface | 440 | |
| Combined Heating Surface | 2551 | 2571 |
| Evaporative Heating Surface/Cylinder Volume | 184.54 | 271.95 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 8478 | 9360 |
| Same as above plus superheater percentage | 9940.30 | 9360 |
| Same as above but substitute firebox area for grate area | 33767.46 | 32080 |
| Power L1 | 12253.36 | 8087.13 |
| Power MT | 640.65 | 427.90 |
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