Subject:
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Re: My Sante Fe 10020
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 27 Feb 2002 05:41:29 GMT
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Viewed:
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1386 times
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In lugnet.trains, Josh Baakko writes:
> > Some lines used depowered locomotives as their control vehicles. The book
> > author may have seen that and thought it was a locomotive at each end. I
> > dunno. But I do know this, unless you have a way to precisely control both
> > locos, having actual power at both ends is tricky.
> >
> > I am not sure how commuter lines do it. They may use electrical signals or
> > they may run the MU lines all the way down the train.
>
> This is in the dealings of DP, Depositied power...
>
> DP is standard in newer North American loco's computers, uses Radio
> Frequencies, allows the engineer to precisely control the rear engine,
> taking off slightly slower then the lead loco, to reduce slack towards the
> rear of the train. DP is used by BNSF in coal trains, & UP, and other major
> lines use it also... I'm SURE commuter lines do so to...
Whereas I would strongly doubt that they do.
DP (Distributed Power) uses radio signals since there are no MU or
electrical lines running through the unit train coal cars. Radio is asking
for trouble in congested areas with crowded spectrum. While I cannot rule DP
control out, commuter lines have been running push/pull since well before
the days of LocoTrol (an early predecessor) so I would tend to suspect
either MU (as James does) or direct electrical control.
++Lar
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Message has 1 Reply:
Message is in Reply To:
 | | Re: My Sante Fe 10020
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| (...) This is in the dealings of DP, Depositied power... DP is standard in newer North American loco's computers, uses Radio Frequencies, allows the engineer to precisely control the rear engine, taking off slightly slower then the lead loco, to (...) (23 years ago, 26-Feb-02, to lugnet.trains)
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