> From: "Chris Abbott" [EMAIL PROTECTED]
> Date: Sat May 20, 2006 2:22pm(PDT)
>
><cut> if I wanted to construct a
>5'-3 1/8" trapezoidal module with an overall curvature of 28 3/4º, S-
>MOD does not appear to permit this type of free-form design.
>
>According to all of the S-MOD documentation I can find online, the
>accepted construction units are rectangular in plan and of certain
>multiples of 2' lengths. These are employed along with 90º curve
>(corner) units using fixed radii choices to construct a
>schematically circular arrangement with an emphasis on allowing many
>trains to operate serially, preferably on multiple tracks
>simultaneously.
If you are building Free-Mo modules, why not use
Free-mo specs, instead of S-MOD standards? Are
you trying to make S-MOD standards fit Free-Mo
requirements for some reason? It seems you can
use whatever is out there that meets your needs.
Unless you plan to interchange with tables
outside your group, you can even devise your own
specs from scratch.
As for the S-MOD standards, I think they are
indeed flexible enough to allow for trapezoids.
There is certainly no requirement for rectangular
tables in 2' length multiples, for corner units,
for a circular arrangement, etc.
Nevertheless, it is true that our local group was
guilty of the two-track circular arrangement when
members built modules, but we were aware of our
options. We even included a spur to connect with
a single-track module. This module would have
represented a branch line wandering into the
distance, Free-Mo-style. Nobody followed up on
the branch line option; all tables have been
variations of the two-track theme.
--
Bill Roberts
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