If only they could just have the diesel "shadow" the steam-only consist as a "protect" engine in case of a major mechanical issue. Since they already have a diesel crew, it would be no additional expense. Is the Big Boy not capable of adequste braking capacity allbeit NOT the dynamic regenerative sort? Do the insurers actually stipulate the presence of a diesel for braking purposes? The aesthetics of a pure steam powered consist are apparently outweighed by the liability considerations of the UP's legal department.
|