QUOTE: Originally posted by farmer03 i've always wondered if/how much Donner Pass is used these days... what kind of traffic and frequency is there...?
QUOTE: Originally posted by oskar how long has it been since the DPU took over Donner Pass kevin
QUOTE: Originally posted by HighIron2003ar Donner Pass is one of the toughest in the nation especially in winter.. That picture sure is a good one! I personally believe every helper should be manned. Computers are nice but sometimes cannot exceed the judgement of a human.
QUOTE: Originally posted by HighIron2003ar Very nice. My own knowledge of Donner is from History and driving a semi thru there from Reno down to the Coast when needed. One of the things I dont understand about modern helpers is how does the rear engines know how much "Shove" to apply to the train? Do they recieve data from the lead units? With those long cars that train would be very long indeed.
QUOTE: Originally posted by HighIron2003ar On the last part about the dynamic braking.. I would asume that the dynamics can work within a range based on minimum to maximun resistance so the helper in the rear would simply just get the dymanics going and not try to add any more braking power unless the front engine asks for it?
QUOTE: Originally posted by SP9033 farmer03, Looks like your question on DPUs has been answered. I see that in the Aug. 2001 issue of Trains, Helpers were the focus of that issue. Think I might order a back issue. Also, since you passed through this area on I-80, the location of those photos I took, were just east of the CHP weigh station. Do you remember that stretch of road? SP9033
QUOTE: Originally posted by SP9033 And just like in the good-ol Espee days, these units get real dirty!
"No soup for you!" - Yev Kassem (from Seinfeld)
QUOTE: Originally posted by SP9033 Let me tell you Mr. ericsp, still wet behind the ears, the same stuff that got SP units dirty, is now getting UP units dirty. Its called "tunnel mist," if you assign a unit for ping-pong duty between Roseville and Sparks for a week or two, than three weeks, with another week, and never wash it, it gets just as dirty as any ESPEE unit ever did.
QUOTE: Originally posted by SP9033 And as far as the UP wrapping some units in flags, it is absolutly against flag protocol, period. "The Flag should never be used for advertising purposes. " Its one thing for an operating employee to adorn his/her locomotive with a flag, it is a whole different matter when a commercial enterprise like UP plasters a flag on the side of its locomotives and makes it a livery subject to trademark laws.
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