Professor Chaos posted:Hot Water posted:AmeenTrainGuy posted:I am a bit confused. Will the bigboy be able to run without a diesel engine coupled to it?
Hopefully, yes.
Why is it that the diesel engine has to do all the work while the steam engine is just there for show?
Lots depends on the size/weight of the passenger train behind and the grades. The diesel is also used primarily for dynamic braking on steep/long down grades. Previously, i.e. prior to 2011, many steam operations on the UP were operated without any diesel, in non-heavy grade territories.
Is there something about the way 4014 is being restored that will reduce its braking capability?
Or does the need for a diesel on grades reflect some other change in the way 4014 would be operated today, vs when the Big Boys were in regular service?
Most likely there will be a diesel in the consist to provide enough additional power that the Big Boy can get enough miles between needing water and fuel that they won't have to stop and refuel/water as often. Even converted to oil the engine will need a bunch of liquids if it's out on it's own power...
