Baldwin 4-10-2 Locomotives in the USA

Class 60000 (Locobase 419)

Data from Paul T. Warner, "Design and Construction of Locomotive 60,000" (on the Web at [] . The entire report "Locomotive Number 60,000

An Experimental Locomotive" including Warner,'s detailed description, Lawford H Fry, "Discussion of Test Results", and reports of tests on individual railroads is available at [], last accessed 30 August 2021. See also DeGolyer, Volume 77, pp. 826+. (Thanks to Chris Hohl for his 25 October 2021 email that provided the correct total wheelbase.) Works number 60000 in May 1927.

This engine was an anniversary locomotive, built as the 60,000th engine to come out of the Baldwin Works in the same month that Lindbergh flew solo across the Atlantic Ocean to Paris.

It was a compound locomotive with a single HP cylinder inside and watertube boiler, a sufficiently unconventional combination to attract much notice. The firebox had sides made up of 48 4" (102 mm) diameter water tubes. Each flank of tubes connected to a horizontal cylindrical drum on top. Warner claimed:"This construction provides a boiler entirely free of staybolts and from flat surfaces requiring staybolts. This feature of the design gives it an important advantage when high steam pressures are to be carried." The horizontal, 26"-diameter drums ran longitudinally 23 1/2 feet (7.16 m) from the rear face of the firebox into the boiler.

Other features included a Worthington 4-BL feed water heater and pump, three 14" (356 mm) piston valves, and 27 sq ft (2.51 sq m) of direct heating surface area in five arch tubes.

The engine was powerful, but required considerable maintenance and was not duplicated.