Subject:
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Re: Mecanical Interlocking
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Newsgroups:
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lugnet.trains
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Date:
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Mon, 1 May 2000 21:13:45 GMT
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Viewed:
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1180 times
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This sounds like just what train-heads love, especially the organised clubs
struggling to grt recognition amongst the conventional railway modelling
fraternity.
In lugnet.trains, James Powell writes:
> Since reading some of the other peoples ideas (Thanks Dean!...I stole your
> track plan :) and so on, having been in the process of rebuilding the • trackage
> on my layout anyway, I decided to make a signal box. The points are easy
> enough...first I have to cut the tabs off them, but that is about par for the
> course. Signals: Lego brick signals, not controlling power, just indicating
> position/direction
You could also build them so that a passing train mechanically moved them to
the 'line blocked' position.
> Signal boxes are inevitably 'interlocked', that is to say, to throw a switch,
> you first have to change the signals that pertain to the point you are
> changing. In my case, I have 3 points leading off the mainline that I want to
> protect, so I require 2 sets of signals (2 of the points are next to one
> another, the other is further away). My mechanical interlocking will prevent
> the points from being moved until the signal is changed, and prevent the • signal
> from being changed until the points are cleared back to the mainline. It • takes
> 20x16 for me to manage this...and a rube goldberg arangement of belts (used • as
> springs), technic pins, axles and various rounded connectors and bricks. Once
> I have installed it, I will take some pictures just to show how complicated • one
> should get it, and this is a simple interlocking...no crossjunctions or such
> like.
The walk of a thousand miles starts with the first footstep..
>
> To provide a liner drive, I am using a 1x5 technic plate attached to a axle, • in
> a 2L gap to drive the rodding (technic shafts, coupled with the gray
> connectors)
>
> It's been fun so far, I will take some photos when I am done...I think it is
> quite a impressive piece of work.
>
> James
It sounds very impressive, James. I'm particularly interested in how a Lego
train system can be made to operate prototypically rather than struggling to
be 100% scale - working signals, hopefully automatically triggered by passing
trains, is something I will be working on soon too.
I'm looking forward to your pics but, just guessing, will you have to elevate
the track by a brick or two to clear the point rodding?
Jon
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Message is in Reply To:
 | | Mecanical Interlocking
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| Since reading some of the other peoples ideas (Thanks Dean!...I stole your track plan :) and so on, having been in the process of rebuilding the trackage on my layout anyway, I decided to make a signal box. The points are easy enough...first I have (...) (25 years ago, 28-Apr-00, to lugnet.trains)
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