Subject:
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Re: First draft of the Lego-Modular Train layout standards posted..
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Newsgroups:
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lugnet.trains, lugnet.trains.org
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Date:
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Fri, 31 Mar 2000 18:56:05 GMT
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Frank Filz wrote:
> Larry Pieniazek wrote:
> > Precisely what i was getting at, guess I should have read to the bottom. These
> > lengths matter. Perhaps we need a standard "clearance car" that has to fit.
> > Anything else is fine as long as it doesn't exceed the loading gauge/clearance
> > envelope the "clearance car" defines.
>
> Hmm, interesting, can one come up with a single car?
Sure - since the specs are being set, a ClearanceCar can be defined. Anyone
building a layout that doesn't allow it to clear gets a wedgie ;-)
All you need are LWH, and pivot point distances from the ends for the center of the
trucks, and each person can mock one up quickly enough.
> One thing I immediately wondered is if the clearance specs define a
> maximum distance between wheelsets (actually between truck pin) and a
> maximum extension beyond this point, would you get different, non
> overlapping envelopes between a short car with a long overhang, and a
> long car with little overhang. Fortuanately, I realized that the longer
> wheelbase is going to push the overhang further out on a curve than a
> shorter wheelbase (think of the "angle" the car is making with the track
> at each truck, the longer the wheelbase, the sharper this angle, and the
> sharper that angle, the more the overhang sticks out).
>
> Of course this degenerate (extremely long) car will actually produce
> more clearance than is strictly necessary, but it never hurts to have a
> little too much clearance.
Right. But you don't want 3/4 of the module to be clearance space either. Doesn't
leave much space for environment.
--
| Tom Stangl, Technical Support Netscape Communications Corp
| Please do not associate my personal views with my employer
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