I love those compound locomotives, this one looks to be a Challenger, with twelve drivers, it was smaller than the Union Pacific's Bigboy, but the Challenger had more traction effort than Bigboy's 16 drivers, due to less weight per driver!
I love those compound locomotives, this one looks to be a Challenger, with twelve drivers, it was smaller than the Union Pacific's Bigboy, but the Challenger had more traction effort than Bigboy's 16 drivers, due to less weight per driver!
jimfols (Dec 7, 2019)
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