The fundamental limits on train size are engine traction and drawbar
strength.
Remember that when starting the train, at some point the engine to
first
car drawbar has the entire mass of the train on it; this turns out
to be
more of an issue than engine traction. Past a certain size, you get
an
awful ping noise as a drawbar breaks, and then you have *two* trains.
-- Graydon
I bet they carry a spare and a big wrench to fix that on the road. :-)
Joseph McAllister
[email protected]
http://gallery.me.com/jomac
http://web.me.com/jomac/show.me/Blog/Blog.html
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