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 03:21:51 GMT
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Viewed:
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3236 times
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In lugnet
> > I've seen the term "push-pull" (in at least one coffee-table type railfan
> > book) used to refer to one locomotive at each end of a consist. Is that
> > incorrect usage of the term, or does it have two completely different
> > meanings?
>
> I am not sure but I would tend to lean toward both correct, different • meanings.
>
Yes, push pull generally, as far as I tell, means that the loco(s) are at one
end, and there is a control cab at the other end.
> 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.
GO used to do this with F units :). (But, they mostly use the coaches, since
the high levels have cabs, and the old single levels did too-I think they were
a bigger cab, since it used to be that they ran high levels, and one old single
level as the last coach in the train...)
> 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.
MU cables for the most part. I know that is how the UK stuff does it.
Speaking of the UK, the IC-125's have 2 diesels separated by the train, in a
distributed power configuration. They still hold the speed record for the
fastest self contained power train :). There are special DVT (Driving Van
Trailers) for use with most of the more modern stock (in particular, the
electrics). -incidentally, the same loco was involved with the last 2 major
crashes (the broken rail, and the landrover on track incidents), with the loco
pushing-it survived both crashes.
James P
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Message is in Reply To:
 | | Re: My Sante Fe 10020
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| (...) I am not sure but I would tend to lean toward both correct, different meanings. Commuter practice puts controls in the ends of "some" (or all) cars so that when the consist is made up a car with a controlset is at the very end of the consist, (...) (25 years ago, 26-Feb-02, to lugnet.trains)
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