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19 Jul 2024 19:20:33 EDT (-0400)
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From: Greg M  Johnson
Subject: Re: Railroad
Date: 30 Sep 2002 09:50:40
Message: <3d9856b0$1@news.povray.org>
"Remco de Korte" <rem### [at] onwijscom> wrote in message
news:3D97B5AA.F5ECC6FA@onwijs.com...
>
> There's a small problem here with the middle set of wheels, they
> don't always touch the track.
>

Independent suspension?: Ugh, more coding headaches!  The biggest one I face
now is how to get a second car hooked up to this one and keep everything
purely procedural.

But seriously,  would a real train have independent suspension of that type?
I suppose the answer is no, but they wouldn't go on non-NTSB-approved tracks
like this one, either.   I'm probably going to model two kinds of engines,
1) Thomas-like, and 2) highly detailed from some blueprints of 1910's steam
engines I found at the local library.


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From: Remco de Korte
Subject: Re: Railroad
Date: 1 Oct 2002 11:55:21
Message: <3D99C56C.1EFB171E@onwijs.com>
"Greg M. Johnson" wrote:
> 
> "Remco de Korte" <rem### [at] onwijscom> wrote in message
> news:3D97B5AA.F5ECC6FA@onwijs.com...
> >
> > There's a small problem here with the middle set of wheels, they
> > don't always touch the track.
> >
> 
> Independent suspension?: Ugh, more coding headaches!  The biggest one I face
> now is how to get a second car hooked up to this one and keep everything
> purely procedural.
> 

You could also get the sausage back and bend it ;)

> But seriously,  would a real train have independent suspension of that type?

Perhaps not, or at least not as flexible as would be necessary
for your track. 
But having a single set of wheels in the middle increases the
problem (I've never seen that on a real train).

> I suppose the answer is no, but they wouldn't go on non-NTSB-approved tracks
> like this one, either.   I'm probably going to model two kinds of engines,
> 1) Thomas-like, and 2) highly detailed from some blueprints of 1910's steam
> engines I found at the local library.

Would it really be that hard to model the suspension
(realistically or not)? You already have the movement of the
upper part, guided by the track, so you also already know the
position of the track. If you take the current position of the
wheels, then put the wheels on the track and stick a bit of
bubblegum between those two positions it should work nicely.
Oh, and if you work on the Thomas-like version I'd really love
to see a sausage (even though I don't eat them). :)

Regards,

Remco


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