Subject:
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Re: Proposed Monorail from 4.5v Track. Not built. Thoughts only
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 22 Jan 1999 20:54:58 GMT
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Viewed:
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1012 times
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> Maybe you could use *only* one of the two 4.5v radius curves: either the
> inner, and smaller, radius curve with the smooth top surface; or use the
> outer , larger, radius curve with the 'toothed' top surface.
Or use both and have parallel double curves...
>
> For the train itself:
>
> I envision a three wheel set up to both guide and support a train on the
> single track. One wheel would roll along the top surface of the track.
> Two wheels would roll in a plane parallel to the ground, one on either
> side of the track to keep the train on the track. Two of these tri-wheel
> assemblies would be connected to either end of a train car via a pivot
> above this tri-wheel assembly that would rotate in a plane parallel to the
> ground.
>
> The above design would likely wobble to some degree if the two side wheels
> are not close enough to the track.
No problem, make them spring-(or rubber-band-)loaded.
> Power to top-riding wheel might be provided through a Technic motor
> driving a Technic axled wheel. However, there are rotation issues
> concerning the drive mechanism that I can foresee, but have no thoughtful
> solution other than a universal joint or (LEGO Brand) rubber band ;-).
What issues?
> Since the radius of curvature of the 4.5v curved rails is larger than that
> of the LEGO 9v monorail track, a train for this proposed design might be
> able to incorporate side skirts that hang down below, or at least at, the
> level of the track. This, as opposed to the 9v monorail trains which ride
> entirely above the 4-stud wide track.
...and makes them a rather sorry excuse for a monorail - 2-track
wheels on a flat surface an all...
> Well, these are, as you can tell, just some half-baked initial thoughts
> about using 4.5v train rails to ake a monorail setup. Haven't given much
> thought for the track supports. Since the track would be single stud-wide,
> that may yield a structural support problem.
Not really, since track supports just have to clear whatever side skirts one
decides upon.
> If this discussion gives anyone the motivation to try it out, or if you've
> already tried it, I'd love to hear about your efforts and level of
> success.
I haven't tried it yet, but thought about it for quite a while.
-gbr
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