Figure 80. — Model of Boldwin-Westinghouse geared steam-turbine locomotive, 



1944. 



and was then set aside on June 11, 1949, because it was in 

 need of repairs to the firebox and flues, and also to the 

 turbines, oil pumps, and gears. At that time all passenger 

 service on the Pennsylvania was being changed to diesel- 

 electric operation, so the locomotive was ultimately scrapped 

 on May 29, 1952. 



Genera/ Motors Diesel-Elecfric Locomotive, 1945 



A nonoperable model of a diesel-electric locomotive (fig- 

 ure 81) was given to the Museum (USNM 313163) by the 

 New York Central System in 1947. This gray and black 

 model, which is 33 inches long and is built to a scale of ^/4 

 inch to the foot, represents the General Motors 2-unit diesel- 

 electric No. 4000-4001 of the New York Central, a type 

 placed in service with the Empire State Express in 1945 to 

 replace the Hudson-type steam locomotives described on 

 page 99. The model was especially built for the Museum's 

 collection, the builder being Edwin P. Alexander of Yardley, 

 Pa. 



The overall length of the two full sized units is just over 

 140 feet and their combined weight is 646,000 pounds. 

 Each end of each unit is supported by a 6-wheeled truck, 

 and the wheel diameter is 36 inches throughout. 



Each unit is equipped with two General Motors 12-cyl- 

 inder V-type 2-cycle diesel engines having a bore of 8^2 inches 

 and a stroke of 10 inches, and developing 1,000 horsepower 



102 



