The AT&SF was the only western railroad to have purchased new 2-8-4s. These Class 4101 "Berkshires" had 63" diameter drivers, 27" x 32" cylinders, a boiler pressure of 220 psi with a …

The Atchison, Topeka & Santa Fe Railway was experiencing the same problem with its "Pacifics" that many railroads were having. The "Pacifics" were not adequate for the longer passenger …

Perhaps this was becaused the road number "3751" followed its last 4-8-2 road number "3750". These locomotives burned coal and had 73" drivers. They were later rebuilt by the AT&SF to …

Baldwin and the Santa Fe calculated evaporative heating surface area using the firebox, tube heating surface area, and the feed water heater's 417 tubes of 2 1/4" diameter and 6 ft 8 (2.03 …

There are two surviving AT&SF 2-8-2 "Mikado" type locomotives. These two locomotives (numbers 3167 and 4076) were lost in a flood in 1952 and are now sunk in the Kaw River in …

Twenty of the "Berkshire" type locomotives exist today: 2 from the Pere Marquette, 6 from the Nickel Plate Road and 12 of the C & O's 2-8-4 locomotives, which they called "Kanawhas". …

Exhaust steam from the HP cylinders entered a 48" (1,219 mm) long Santa Fe-type smokebox reheater drum that measured 1,147 sq ft (106.56 sq m) in area. The 417 reheater tubes, each …

The 4-8-4 was the ultimate wheel configuration for the modern passenger and fast freight steam locomotive. The eight driver arrangement was usable on almost every main line in North …

This committee, after exhaustive studies and tests, used the most favorable ratios, proportions and characteristics of the Erie Railroad's 2-8-4 of 1927, and enlarged it into the famous C & O …

Boston & Maine 2-8-4 "Berkshire" Locomotives in the USA The Boston & Maine Railroad bought twenty-five "Berkshire" type locomotives from the Lima Locomotive Works and numbered …