Southern Pacific class AC-8
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| Power type | Steam |
|---|---|
| Builder | Baldwin Locomotive Works |
| Serial number | 62265 – 62292 |
| Build date | July-October 1939 |
| Configuration | 4-8-8-2 |
| Gauge | 4 ft 8½ in (1435 mm) |
| Driver size | 63 in diameter |
| Weight on drivers | 531,700 lb |
| Locomotive weight | 657,900 lb |
| Boiler pressure | 250 psi |
| Feedwater heater | 6SA Worthington |
| Cylinder size | 24 in dia × 32 in stroke |
| Tractive effort | 124,300 lbf |
| Career | Southern Pacific Railroad |
| Class | AC-8 |
| Number in class | 28 |
| Number | 4177 – 4204 |
| First run | August 18, 1939 |
| Retired | 1955 – 1957 |
| Disposition | scrapped |
Southern Pacific Railroad's AC-8 class of cab forward steam locomotives was the fifth of SP's 4-8-8-2 classes. They were built by Baldwin Locomotive Works in 1939.
The AC-8s were the first to receive the larger redesigned cab windows as standard equipment that were retrofitted onto earlier AC class locomotives. The locomotives were only slightly larger than their AC-7 predecessors.
The first AC-8 entered service on August 18, 1939, and the last on November 26, 1939. Number 4173 was first to be retired from active service on September 2, 1954, while 4172 was the last on January 9, 1958. All of these locomotives were scrapped, beginning with 4155 on November 26, 1954, and ending with 4172 on April 24, 1959.
[edit] References
- Diebert, Timothy S. and Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium. Shade Tree Books. ISBN 0-930742-12-5.
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