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I've constructed the 9V point centerline geometry through trial and error.
What I came up wasn't very intuitive, so it's probably wrong. (I don't think
there's an LDraw representation of the point yet, although it looks like
Ludo Soete is working on one.)
I describe the branch as a circular arc segment of 36.5625 degrees (6.5
curve segment ties), followed by a straight 0.4 studs long, followed by a
circular arc the other way of 14.0625 degrees (2.5 curve ties). This
positions the end of the branch with the correct length and orientation with
fairly high precision, but the numbers are so weird that I can't believe
they're correct.
On the other hand, I couldn't construct the the branch of the point out of
two circular curves either, even though it sure looks like that should work
when I physically place a curved track section on top of various parts of
the point element.
Thanks for any help.
Cary
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Message has 1 Reply:
 | | Re: 9V point geometry
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| (...) ... After some conversation with Ludo Soete, I created a geometric construction to prove that the 9V point curve can be created from the same circle radius as the 9V track, without any straight sections. I did this by modeling this Track (...) (21 years ago, 10-Feb-03, to lugnet.trains, lugnet.cad.dat.parts)
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