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| Extra locomotives on coal trains https://www.rypn.org/forums/viewtopic.php?f=1&t=9546 |
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| Author: | Cliff McKay [ Thu Apr 29, 2004 8:01 pm ] |
| Post subject: | Extra locomotives on coal trains |
This isn't a preservation oriented post, but... For the last six months or so, every Chicago bound UP coal train I've seen has an additional locomotive at the end (usually an ex-SP unit). The same setup is on the empties as they head back west. I'm sure this has something to do with braking. Is this practice unique to UP, or is it a new regulation that other major railroads have to adhere to as well? mckay1995@comcast.net |
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| Author: | Jim Lundquist [ Thu Apr 29, 2004 8:15 pm ] |
| Post subject: | try www.trainorders.com |
you will have your answer in 15 minutes! Jim Jim@psrm.org |
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| Author: | Don C. [ Fri Apr 30, 2004 10:45 am ] |
| Post subject: | Re: Extra locomotives on coal trains |
> This isn't a preservation oriented post, > but... > For the last six months or so, every Chicago > bound UP coal train I've seen has an > additional locomotive at the end (usually an > ex-SP unit). The same setup is on the > empties as they head back west. I'm sure > this has something to do with braking. Is > this practice unique to UP, or is it a new > regulation that other major railroads have > to adhere to as well? It is called Distributed Power, usually refer to as DPU. You have all of the benefits of a rearend helper but it is controlled by the engineer on the lead unit. It also saves running the power around to the other end if the terminal point (say a coal unloading facility) does not have a balloon track to turn the train. Push-pull freight trains. Don C. http://www.261.com milw261@sbcglobal.net |
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| Author: | Wooly [ Thu May 06, 2004 10:22 am ] |
| Post subject: | Re: Extra locomotives on coal trains |
> It is called Distributed Power, usually > refer to as DPU. You have all of the > benefits of a rearend helper but it is > controlled by the engineer on the lead unit. > It also saves running the power around to > the other end if the terminal point (say a > coal unloading facility) does not have a > balloon track to turn the train. Push-pull > freight trains. > Don C. UP says it also benifits in better braking BNSF does it to. wooly421@charter.net |
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