Santa Fe Class 2900


The Santa Fe 2900 Class was a series of 30 "Northern" type steam locomotives built between 1943 and 1944 by the Baldwin Locomotive Works for Atchison, Topeka and Santa Fe Railroad and pulled freight and passenger trains until retirement in the early to late-1950s.
Today, six 2900s survive, with five units on static display and one, No. 2926, has been restored to operating condition in Albuquerque, New Mexico. Fully restored in July 2021, it is considered to be the largest and heaviest operating 4-8-4 type steam locomotive in the world.

History

Being built during World War II, wartime shortages of lightweight metals resulted in ordinary metals being used for their construction. This resulted in the class being the heaviest 4-8-4s ever built. They outweighed their nearest rivals by over 2,000 pounds. They have Timken roller bearings on all axles. Between 1946 and 1948, they were then approved for speeds with the Santa Fe's express passenger trains after being fitted with Timken roller bearing tandem side-rods, up from 100-mph when delivered with its original side-rods. However, anecdotes from retired drivers suggest the class could run for long periods at speeds of over.
Though they were designed to haul passenger trains, wartime exigencies required that they also haul fast freight until the war ended. After the war, they hauled passenger trains such as the Chief, Scout and Grand Canyon Limited. After diesels took over, the class was retired by 1959.

Preservation

Six 2900s survived into preservation: