2-10-10-2

In 1911 and 1912, the Atchison, Topeka and Santa Fe Railway modified ten 2-10-2 Baldwin-built locomotives into a new 2-10-10-2 configuration dubbed the 3000 class. They were the largest locomotives in the world from their introduction until 1914. They performed well in helper service, but could only go before losing steam. The ATSF reverted them to their 2-10-2 configurations between 1915 and 1918. == Virginian Railway class AE ==

These ten locomotives were built in 1918 by ALCO for the Virginian Railway. With a width of , they were delivered without their cabs and front low-pressure cylinders and were assembled after delivery. The low-pressure cylinders (on centers) were the largest on any U.S. locomotive; these had to be inclined a few degrees to provide clearance. The class remained in service until the 1940s. No examples have been preserved. ==References==