ATSF 3450 class
| ATSF 3450 class | |
| Power type | Steam |
|---|---|
| Builder | Baldwin Locomotive Works |
| Build date | 1927 |
| Total production | 10 |
| Configuration | 4-6-4 |
| UIC classification | 2'C2' |
| Gauge | 4 ft 8½ in (1435 mm) |
| Driver size | 73 in (1854 mm) |
| Length | 97 ft 11 in (29.85 m) |
| Weight on drivers | 198,000 lb (89,800 kg) |
| Total weight | 343,900 lb (156,000 kg) |
| Locomotive and tender combined weight | 639,260 lb (289,960 kg) |
| Tender capacity | 5,000 US gallons (19,000 L) oil, 15,000 US gallons (57,000 L) water |
| Boiler pressure | 220 lb/in² (1.52 MPa) |
| Fire grate area | 88 ft² (8.12 m²) |
| Cylinders | 2 |
| Cylinder size | 25×28 in (635×711 mm) |
| Valve gear | Walschaert valve gear |
| Tractive effort | 44,250 lbf (197 kN) |
| Career | Atchison, Topeka and Santa Fe Railway |
| Number | #3450–3459 |
| Disposition | #3450 preserved, rest scrapped |
The Atchison, Topeka and Santa Fe Railway's 3450 class comprised ten 4-6-4 "Hudson" type steam locomotives built by the Baldwin Locomotive Works in 1927. Built as coal-burners, they were converted to oil-burning during the 1930s. At the same time, the locomotives were given 79 inch driving wheels instead of their original 73 inch, and the boiler pressures increased by 10 lb/in² to 230 lb/in². Combined, these changes reduced the starting tractive effort to 43,300 lb from 44,250 lb, but increased the top speed and efficiency. Their early service was in the Midwest, between Chicago, Illinois and Colorado; later, some were assigned to service in the San Joaquin Valley of California between Bakersfield and Oakland.
They were smaller and less powerful locomotives than the later 3460 class, but were capable of equivalently high speeds.
The first locomotive built, #3450, was donated by the Santa Fe in 1955 to the Railway and Locomotive Historical Society's Southern California chapter, and is preserved at the Society's museum in the Los Angeles County Fairgrounds at Pomona, California. It is not in operational condition but is preserved in good condition as a static exhibit.
Further images
Front of #3450
Side of #3450
References
- Atchison, Topeka and Santa Fe 3450. Southern California Chapter, Railway and Locomotive Historical Society. Retrieved on 2006-01-22.
- Barris, Wes. Atchison, Topeka & Santa Fe Hudsons. SteamLocomotive.com. Retrieved on 2006-01-22.
- Blaszak, Michael and Glischinski, Steve (2002). Santa Fe Railway. MBI. ISBN 0-7603-0380-0.
