Subject:
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Re: Old Train Wheels Question
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 14 Dec 2001 04:31:39 GMT
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Viewed:
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1607 times
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In lugnet.trains, Tony Hafner writes:
> In lugnet.trains, Richard Marchetti writes:
>
> > Lastly, because I have no real knowledge of trains, do the large wheels in
> > the back have to be three pairs of large wheels, or can there be two and
> > even single pairs of large wheels towards the back of the engine.
>
> Well, if you want it to actually represent a Thatcher Perkins then you'd
> have to keep the correct number of wheels (without doing the research, I'm
> going to go out on a limb and assume that Lego got the wheel arrangement
> correct). But you could certainly change around the number of wheels and
> have a potentially valid train design.
>
> Quick wheel arrangement primer for US steam engines (I forget the name of
> this system at the moment):
>
> The number of wheels is represented with 3 numbers separated by dashes. The
> first is the number of wheels in front of the drive wheels, (aka drivers).
> The second is the number of drivers. The third is the number of wheels
> behind the drivers. If there are no leading or trailing wheels, put a zero
> in that slot. So the Thatcher Perkins is a 4-6-0. A 4-4-0 is a real
> combination as well... called an "American" I believe. I'm no expert, so I
> don't know if a 4-2-0 ever existed. But I can tell you that Duplo steam
> locomotives have that arrangement, so you can always use that as a guide if
> you don't care about representing a "real" engine.
A 4-2-0 arrangement certainly existed - was commonly called the "Jervis" after
it's inventor. There's a list of (American) steam loco wheel arrangements here
http://www.steamlocomotive.com/misc/wheels.html
HTH
ROSCO
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Message is in Reply To:
 | | Re: Old Train Wheels Question
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| (...) The Lego one was push-only, yes. Though there is plenty of room to fit in a 4.5v motor from that era. If done correctly, it wouldn't look much different from the outside. (...) Those metal-axled wheels came in black as well. I have some from (...) (25 years ago, 14-Dec-01, to lugnet.trains)
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