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- Path: sparky!uunet!destroyer!cs.ubc.ca!mala.bc.ca!wagner
- From: wagner@mala.bc.ca
- Newsgroups: rec.railroad
- Subject: Re: ? about engine sets
- Message-ID: <1993Jan25.125949.1292@mala.bc.ca>
- Date: 25 Jan 93 12:59:49 -0700
- References: <1jp1qtINN4as@grapevine.EBay.Sun.COM> <1993Jan22.232133.5945@ee.ryerson.ca>
- Distribution: usa
- Organization: Malaspina College
- Lines: 57
-
-
- In article <1993Jan22.232133.5945@ee.ryerson.ca>, cal@ee.ryerson.ca (Calvin Henry-Cotnam) writes:
- > maral@repare.EBay.Sun.COM writes:
- >>The question is why do trains utilize various engine types when pulling
- >>a string of cars and why do some point forwards and some backwards?
- >
- > I'll attempt the second part about why some point one way and some
- > the other. Basically, turning around an engine involves a "dead-head"
- > move. Although short, it does take crew time and produces no income
- > for the railroad. The engines are simply coupled together in the
- > orientation that they are found.
- >
- > When running multiple units, (generally) only the front unit need
- > have the cab face the front, mainly for headlight and (here in
- > Canada) ditchlight purposes. Although I have seen the odd peddler
- > with the front unit actually backwards.
- >
- > Now for the first question about why differnt types of engines are
- > used. Someone else could probably do a more concise job of explaining
- > this than me, but I would suggest reading the section called,
- > "The Jobs Locomotives Do" in Kalmbach's "The Contemporary Diesel
- > Spotter's Guide", pages 315 to 329. (ISBN: 0-89024-088-4)
- >
- > It gets a little techincal, but does give a good explanation about
- > this area.
- >
- >
- > Calvin Henry-Cotnam, CATE | "...My brain IBM"
- > Ryerson Polytechnical Institute | "So if you see me, acting strangely..."
- > Toronto, Ontario, Canada | STYX, Mr. Roboto
-
- Can't think of any particular reason why an engine should be specifically placed
- in a consist, but I know that areas required certain types of engines. Specif
- ically in the mountains. Selkirks could navigate the short radius and had the
- pulling power. Heavier, longer wheeled (read multi-wheeled) could not make it
- through the curves and tunnels. Of course these unit had be be returned to the
- point of departure, so some placements had to be made just to economically get
- them back.
-
- Of course the reason they were out in the first place was due to the terrain of
- the track. Mountians were real problems as they had extreme curves and grades.
-
- The ideal consist had the motive power evenly spaced, but there wasn,t always
- a convenient way to cut them out once they had gotten the job done so they used
- pushers as they could be cut easy.
-
- Of course if it was too long they had to place an engine in the middle. There
- was no place to turn them when they were cut so they returned in the last dir-
- ection they were pointed.
- --
- 73, Tom
- ================================================================================
- Tom Wagner, Audio Visual Technician. Malaspina College Nanaimo British Columbia
- (604) 753-3245, Local 2226 Fax (604) 755-8742 Callsign VE7GDA
-
- I do not recyle..... I keep everything! (All standard disclaimers apply)
- ================================================================================
-