The last 2 unit coal trains I have observed through Flora, Il. have had the DPU unit placed about one third from the rear of the train. Has Union Pacific changed DPU placement? If so, does any one know why? Thanks.
All I can say is…Contact UP Public Affaires and ask them they should be able to answer your Question. Contact John Bromley. BNSFrailfan.
So far all the ones I have seen on the Rochelle cam have the DPU at the rear. [:D][:o)]
[quote]
Originally posted by jwalpacific
The dynamics of train handling are much better if the helper is located about 2/3 back (tonnage 2/3, not length 2/3). Things improve even more when 40% of needed power is on the point and 60% is at the 2/3’s point. It becomes very difficult to do things such as bust nuckles or pull drawbars out with that power arrangement. Such an arrangement would be a good place for those 6,000 HP units. One on the point and two burried.
However, to use that arrangement on a unit train such as a coal move requires the ability to turn the entire train at each end and not to be using rollovers.
Standard RCE setup with less drawbar forces/ broken knuckle benefits.
Absolutely. Cost reduction bennies just keep on comming.