Subject:
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Re: Building Bridges
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 26 Nov 1999 22:22:31 GMT
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Viewed:
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1115 times
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> The reason for the climb, btw, is that I needed to put machinery under
> the track to support a lift-bridge that spans a hallway; the ledge is
> 5', and when idle, the train needs to allow, say, 6'6" clearance. This
> is simply too high to build a permanent bridge, so I've built a vertical
> lift bridge to span the 28.75" gap that carries two parallel tracks.
A lift bridge or a draw bridge?
>
> Another question - have people met with any trouble using a Mindstorms
> unit to control their trains? I'm looking to use one to control the
> lift bridge, and I thought I'd dual-purpose it. Consider that I might
> be powering 2 trains over 4 power connectors and about 150 pieces of
> track.
Why would you use mindstorms to control the bridge except perhaps as a aproach
sensor? It's easier to do that with manual blocks, than with electronics.
Although, I suppose you could get it to work fine.
James P
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Message has 1 Reply:
 | | Re: Building Bridges
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| (...) Lift Bridge. I'm actually on my second version; the first was lifted by long chain-link chains and powered from the top of the towers. It only carried a single track, and the deck was quite light, and a little flimsy. I ran into difficulty (...) (25 years ago, 28-Nov-99, to lugnet.trains)
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Message is in Reply To:
| | Re: Building Bridges
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| Hi, all: I'm in the midst of a large bridge project myself. I'm adhering to the 2 plate slope / 1 plate rate-of-change guideline, but for other reasons. I'd add that you probably shouldn't climb sharply through turns - that just complicates the (...) (25 years ago, 26-Nov-99, to lugnet.trains)
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