The Union Pacific RR is a pioneer in the use of high-horsepower diesel-electric locomotives, such as the General Electric U50 accurately modeled in HO scale by Athearn Trains. The direct-current model ...

The roar of two 3,300 hp diesel engines, an airhorn, and more sound effects highlight Bachmann Trains’ upgraded HO scale EMD DDA40X locomotive. The model uses most of the same tooling as earlier ...