Reply to "Big Boy #4014 moves under power for the first time in over 50 years • The UP is bringing out the 4014, see schedule 🚂"

Hot WaterOGR Forum Member SUPPORTING MEMBER

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.

1/30/198:37 PM

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