Subject:
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Re: Long Span Suspension Bridge?
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 24 Jan 2008 00:52:36 GMT
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Viewed:
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15283 times
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In lugnet.trains, Bruce S. Chamberlain wrote:
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In lugnet.trains, Ted Michon wrote:
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In lugnet.trains, Mike Gallagher wrote:
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,,
Total length 15ft (480 studs) , with one side of the deck over 12ft long.
The 12ft length is just to long for cable stay. The bridge is too light for
the use. But if I added weight to the bridge deck, say $30+ of pennies
across deck it stabilized it. And when the very light trains went over it
they did not bow any of the deck.
.. Mike Gallagher
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Mike-
The 192 stud (10 ft) cable-stayed bridged that I posted a picture of earlier
in this thread has a middle open span of 96 studs (5 ft). When we originally
designed it, we made the deck just 5 plates thick with the intention of
having the “cables” support the weight. We quickly determined that it was
easier to make the cables look cosmetically correct using bungee material
(to take up slack), but this proved impractical for supporting the thin
deck. So we added a truss under the deck so that even with twin heavy trains
at random locations we don’t get much deflection. Seems to work.
My next goal is a 384 stud (20 foot) suspension bridge with a 192 stud (10
foot) middle section using real cable. The biggest problem I see is
anchoring the ends (cable stayed bridges have their advantages!).
-Ted
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Ted,
Sorry, I can not stand it anymore. A 48 stud baseplate is 15” and a fraction.
Two at 96 studs would be 30” and a fraction. Four at 192 studs would be 5
feet and a fraction. Therefore 384 studs would be ten feet 3/4 of an inch.
Bruce
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Aww, c’mon Bruce. All guys like to exaggerate the length of their LEGO bridges
when telling others about them. Especially when talking with the ladies. ;-)
Sorry Ted...Bruce kinda set me up for this one in a round-about way. :-)
-Dave
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Message is in Reply To:
 | | Re: Long Span Suspension Bridge?
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| (...) Ted, Sorry, I can not stand it anymore. A 48 stud baseplate is 15" and a fraction. Two at 96 studs would be 30" and a fraction. Four at 192 studs would be 5 feet and a fraction. Therefore 384 studs would be ten feet 3/4 of an inch. Bruce (17 years ago, 23-Jan-08, to lugnet.trains, FTX)
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