Model Railroader Senior Editor Cody Grivno takes a closer look at the WalthersProto HO scale EMD GP7. Cody first explores the prototype history of the GP7, noting that Electro-Motive Division produced ...

Since the second half of the 20th century, four-axle diesel-electric switcher locomotives have been used extensively on short lines. The most common are the EMD SW1500 (1,500 hp/1,119 kW), GP9 (1,750 ...