Subject:
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Re: World Record LEGO Bridge
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Newsgroups:
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lugnet.trains, lugnet.build
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Date:
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Wed, 23 Aug 2000 16:55:18 GMT
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Viewed:
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21 times
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Wayne R Hussey wrote:
>
>
> First, to alleviate any rumors to the contrary, there is no support anywhere
> along the span except the string. It was placed within a couple of inches of
> the floor to provide a reduced amount of rail climb. The officiating took into
> consideration that the overall sag (over a distance of eight feet) was less
> than one inch. There is a plan currently in the works to have it displayed at
> the GATS in Puyallup in November. For that display, there will be no changes
> to the bridge - there will also be no doubt of its ability to span unaided.
<snip>
> Wayne
Hi Wayne,
I'm sorry if my post sounded like I was challenging the authenticity of
your accomplishment - I figured that since your bridge was evaluated for
span length, it was able to stand unaided. From my own (shorter-span)
bridge creations, I have some appreciation for the problems involved in
setting up such a large structure, and I had wondered whether you were
using supports while stringing it, etc. The earlier responses cleared
up my confusion over the nearby monorail bridge.
My own experience is that the static load on a bridge span usually isn't
the big problem - it was when I tried driving two trains in opposite
directions that the induced roll and vibration would sometimes cause the
trains to jump track at flexing joints. Then again, PNLTC uses bigger
trains than I do :)
Thanks for the info on your use on ZNAP - that'll be very helpful.
Take care, and congrats!
Jeff
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Message has 1 Reply:
 | | Re: World Record LEGO Bridge
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| (...) into (...) at (...) I also had the problem of twisting/rolling at first when a train crossed. This seemed to be reduced when I added the stretchers across the width of the span at intervals, although there was still some roll. Even before the (...) (24 years ago, 23-Aug-00, to lugnet.trains, lugnet.build)
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Message is in Reply To:
| | Re: World Record LEGO Bridge
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| (...) Jeff, First, to alleviate any rumors to the contrary, there is no support anywhere along the span except the string. It was placed within a couple of inches of the floor to provide a reduced amount of rail climb. The officiating took into (...) (24 years ago, 23-Aug-00, to lugnet.trains, lugnet.build)
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