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Oh, and here's something I DON'T quite agree with
In lugnet.trains, Larry Pieniazek writes:
> In lugnet.trains, James Powell writes:
> > bring it around one
> > of the ends, so that the yard has 2-4 feet of track before the switch to the
> > mainline.
A lead track often runs down parallel to the main. It is usually connected to
the main by a crossover that faces the opposite way you'd expect and is at the
opposite end you'd expect
Something like this (bad ascii art warning)
======main===================+================================
/ <crossover
-(1)--lead track-------+---+--+------
\ \ <start of yard ladder
(2) +----
\
+-------
\
etc.
The yard goat switches cars from the yard ladder and as it builds the train, it
moves closer and closer to (1). When the train is fully built, the goat is
actually AT position (1). The crossover is thrown and the train is shoved out
onto the main, coupled to waiting road power and meanwhile the yard goat
fetches a caboose and puts it on the rear. To make that easy, often "crummies"
are kept on a short crummy track at position 2.
Hence, the lead track (or sometimes it's called the drill track) can be just
another parralel to the main track and doesn't have to take yard space up.
If your engine facilities are connected to the main at the other end of the
yard, spotting road power just as the goat starts the shove can be a very fluid
motion and the main is fouled for only a very short time. In really big yards,
the power move and crummy move are done onto a track parallel to the main so
there is no fouling at all until the train is actually under way.
But we're not doing really big yards. Really big yards are usually mirrored
onto both sides of the main, have two complete sets of tracks and are double
ended. Tracks on one side of the main are used to classify westbound and the
other side eastbound (or northbound/southbound, depending, although most roads
use westbound/eastbound as timetable direction no matter what the actual
orientation)
Really big yards can have one hundred tracks a side and each track can be over
a mile long or more.
++Lar
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Message has 1 Reply:
 | | Re: Yards
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| (...) In Britain all railway lines are designated up or down - then fast or slow. All lines go 'up' to London - how they work out lines parallel to London I don't know. Is a goat a shunter, a bit like 7760? Carbon 60 (25 years ago, 29-Apr-00, to lugnet.trains, lugnet.org.us.wamalug)
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Message is in Reply To:
| | Re: Yards
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| In lugnet.trains, James Powell writes: <snip> James makes a number of excellent suggestions. Here's what I feel the most important is (and it's one that non RR's don't know to do), if you plan to do actual switching, that is, this yard is more than (...) (25 years ago, 28-Apr-00, to lugnet.trains, lugnet.org.us.wamalug)
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