C&O's Marvel # 906 Allegheny.
The Ruler of the Ghats
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Though being a standard gauge locomotive, if introduced in Broad Gauge, in ghats, there is no need to attach a Triple or Twin banker, IF AND ONLY IF, hauling a passenger train or even a freight rake.
Exceptional...
more... if the freight rake has 120+ wagons, then a single Allegheny is enough to help the lead locomotive.
Might sound bit funny to few, but its true. :-)