Subject:
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Re: Building a three-foot bridge
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Newsgroups:
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lugnet.trains, lugnet.znap
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Date:
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Sun, 26 Jan 2003 01:01:36 GMT
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Viewed:
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3974 times
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In lugnet.trains, Brian Kendig writes:
> I want to build a bridge to cross a one-meter gap between two train
> platforms. The bridge must hold two straight lengths of track, spaced
> with one trackwidth between them (the distance there would be if you
> snapped two cross-intersection track pieces together).
>
> The platforms themselves are a meter off the ground, so putting a
> support in the middle of the span isn't feasible.
>
> Two years ago I grabbed one of every Znap set from a TRU clearance.
> I've been using that to try to build a beam bridge. I've gotten the
> beam reasonably rigid, but my problem right now is that it twists very
> easily, and I can't figure out how to support against that.
>
> Any tips on how to build a sturdy one-meter-long bridge out of Znap
> and/or Technic while being somewhat miserly with the pieces, so I don't
> run out? And any tips on how to reinforce against twisting would be
> greatly appreciated, thanks!
Hello Brian,
The NBLTC has displayed with two such bridges, both made of technic though.
The first one is of an arched design and spans 6 straight track lengths. I
can vouch for it's strength as my 2 year old daughter tried to walk accross
it and it held.
http://www.nbltc.org/images/gallery/events/s020629/rerunbr.jpg
The other bridge shown here is a girder type by David Stenhouse spanning 8
straight lengths. Hope these will inspure you!
http://www.nbltc.org/images/gallery/events/s020921/canyon.jpg
Regards,
Jon Reynolds
www.nbltc.org
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Message is in Reply To:
 | | Building a three-foot bridge
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| I want to build a bridge to cross a one-meter gap between two train platforms. The bridge must hold two straight lengths of track, spaced with one trackwidth between them (the distance there would be if you snapped two cross-intersection track (...) (22 years ago, 23-Jan-03, to lugnet.trains, lugnet.znap)
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