BLI 9917 HO Scale UP CSA-2 Early Challenger Union Pacific 3915 Builders Fantasy Scheme Paragon4 Hybrid Era_1940-1960s Introducing PROTOform's latest aerodynamic solution

Introducing PROTOform's latest aerodynamic solution for high-competition 1/10 Electric Touring Car Racing

Positional exhaust

DCC/Sound version available with LokSound decoder

Designed to work with stock AR60 axle housings as well as Vanquish V2 axle housings

Bi-level cars of this type lowered shipping costs and won back much of the new car traffic for the railroads

BLI 9917 HO Scale UP CSA-2 Early Challenger Union Pacific 3915 Builders Fantasy Scheme Paragon4 Hybrid Era_1940-1960s Introducing PROTOform's latest aerodynamic solutionBLI 9917 HO Scale UP CSA 2 Early Challenger Union Pacific 3915 Builders Fantasy Scheme Paragon4 Hybrid The Union Pacific Challengers were a class of powerful, simple articulated 4 6 6 4 steam locomotives built by the American Locomotive Company (ALCO) exclusively for the Union Pacific Railroad. Between 1936 and 1943, a total of 105 were constructed. Measuring an impressive 122 feet (37 m) in length and weighing 628,000 pounds (284,800 kg), these