Subject:
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Re: A castle fan's Train plan
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 17 Mar 2006 00:35:17 GMT
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Viewed:
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2603 times
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In lugnet.trains, Mathew Clayson wrote:
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This is a long engine and unless you are articulating the boiler you’ll want
to balance the swing out at each end of the engine. The simple methode is to
place the center point between the flanged wheel sets as close to the center
of the engine as possible. Scince the drive wheels are quite forward on the
engine, I recomend placing the blind drivers first.
If you want to improve this even more, reverse the order on the drivers.
Build the pistons as part of the driver wheel set, ot the engine. Pivot the
leading wheels as before. Treat the leading wheels and driver/piston
combination as one large truck. Build the rear wheels as a seperate truck.
The have the rest of the engine rides on these two trucks. This will reduce
the swing out at each end by introducing some at the middle. I think it may
be more reliable as well.
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I know the leading wheels need to be on one pivot at the end of a connecting
arm, but what about the rear wheels? Should they have a single pivot at the
end of a connecting arm, or a double pivot at both ends of the arm (where it
attaches to the engine and where it attaches to the trailing wheels)?
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In the first methode, the trailing truck ataches to the driver wheels, not
the engine. Test bothe a single pivot and a double, but I think the double
will work better. In the second method it’s a non issue, the trailing wheels
attch to the engine as on a rail car.
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This is a good example of the first methode:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=85751
Mat
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Message is in Reply To:
 | | Re: A castle fan's Train plan
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| (...) Your welcome, I haven't actually built a steem engine this large, but I've been collecting ideas. (...) This is a long engine and unless you are articulating the boiler you'll want to balance the swing out at each end of the engine. The simple (...) (19 years ago, 15-Mar-06, to lugnet.trains, FTX)
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