Drawing railway track in AutoCAD.

[Lasse Krogh Thygesen]

Hello

I have just started drawing a railroad track in AutoCAD, but I need
the precise measurements of the tracks to do this. I'm using Märklin
tracks but the measurements are only with one decimal and I need them
more precise.

I want to know if any of you have some more precise measurements ?

Lasse Thygesen
Denmark

---=== [End of message] - [Visit my homepage at http://www.lkt.person.dk] ===---

[Richard]

one decimal what km,m,cm,mm - I would have thought in either of the
last two cases one decimal place was precise enough.
RichC

[Erik Olsen]

If you have the measurements to one decimal of a cm it may well be as
precise as you need. You have to consider that manufacturing tolerances on
track lengths may be of the same order, and tolerances on radii may ten
times that.

I know it's tempting to draw in a cad programme to a precision of 0.01 mm
(I've done it myself) but when it comes to track planning it doesn't make
sense. You may have to buy a few pieces of track and points and measure them
yourself to realise this.

Best regards,
Erik Olsen, Ishoej, Denmark

Lasse Krogh Thygesen wrote

[Trevor Grout]

On Thu, 5 Nov 1998 19:42:06 +0100, "Erik Olsen"
<bjerg...@get2net.dk> It was said by the most wise:

What I do is draw my track to full size then when ploting scale the
drawing. Works everytime for me and you get the correct layout of the
track. At the end of the day there is nothing like useing the real
thing for dimemsions and producing scaled down versions.

Regards
--
Trev

[SVH]

Personally I prefer using XTrkCad for drawing trackplanes. The program
works wonders and it contains libraries for a lot of track
manufacturers. It includes the possibility of designing your own
points and other track elements. A demo version is avaible at
www.xtrkcad.com.

Kind regards Sten Vibe Hansen

On Thu, 05 Nov 1998 00:50:22 GMT, l...@post12.tele.dk (Lasse Krogh
Thygesen) wrote:

>Hello
>

>I have just started drawing a railroad track in AutoCAD, but I need
>the precise measurements of the tracks to do this. I'm using Märklin
>tracks but the measurements are only with one decimal and I need them
>more precise.
>

[Lasse Krogh Thygesen]

Well I draw the tracks as blocks, which easily can be inserted in the
drawing. I use the snap function so each track is perfectly connected
to each other, but if a straight track is too long or too short, or if
a curved track has the wrong radius, then when the two ends of the
railway meet, they don't. I have tried drawing a railway track (a
small one) from a Märklin catalog, but the two ends of the railway
ended up being 11 mm horisontally and 3.5 mm vertically from each
other.

I have made the drawing, so 1 unit = 1 mm, and even with 8 decimals
but I still can't get it right. In the Märklin catalog the
measurements are also in mm, but with one or sometimes zero decimals.

I any of you have tried something similiar, then I would like to see
the template you've made.

[Erik Olsen]

I can imagine your problem. The manufacturer probably doesn't care as the
track can easily be adjusted to fit in reality. Adjustments are done by
pulling the track pieces slightly apart or setting one piece at a slight
angle to the next. It can be done when drawing but is very time-consuming.
You will probably have to redesign the track and point blocks so that they
are theoretically correct. Quite a job, I think. Good luck ;-)

Best regards,
Erik Olsen, Ishoej, Denmark

Lasse Krogh Thygesen skrev i meddelelsen
<364b2802...@news.inet.tele.dk>...