What is the tightest curve you can get in the route editor

[johncas]

What is the tightest curve you can get in the route editor

I want a curve that that is the same radious as the 4 lane road curve

I do have X Tracks installed

If there is a curve section what is it called in editor.

[bigvern]

The tightest fixed radius curve is 250m (but only in double track).

I've gone down to about 150m with dynamic track but any tighter than that you are going to hit problems getting trains round the curves. Trains are not designed to go round the same radius curves as road vehicles - about 80 metres (4 chains) is the minimum.

[alan2]

You tend to get problems with the bounding boxes on very tight curves. The trains uncouple and derail ect.

Alan

[qzdcg8]

I guess you want this for a tram route, and as trams tend to not go faster than 30-40mph, have very short wheelbases and run in singles (well in Blackpool they do - mostly) then very short radiuses, derailments and bounding boxes don't come into the equation.

From a previous screenshot, here is a section of my aborted Metrolink route with a Beta Blackpool Tram on it - if memory serves me right the curve on which the Tram is sat (swinging from Market St into Piccadilly Gardens - use your imagination ) is the tightest I could get using Dynamic Curves.

<img src="http://album.atomic-systems.com/showPic ... crgrb3.jpg">

[fadedGlory]

Xtracks has a couple of very tight tram curves and matching 30 degree points. These are the tightest I've seen, much tighter than you can get with dynamic track. I use them all the time in my embryonic Gooische Stoomtram route.

I had trouble getting bogie coaches through these curves, but that can be solved by setting the correct coupling parameters in the .wag and .eng files. I don't think it is a bounding box issue.

For longer wheelbase 4-wheel coaches I use single-axis bogies. In real life tram systems these are used as well, as are sliding axes which MSTS doesn't support, but single-axis bogies will do instead. In that case the 'bogies' are just a couple of tiny triangle polygon placed in between the wheels and given the names 'bogie1', 'bogie2'. Parent the wheels to those and all should be well. The fact that the wheels swing and the axleboxes don't is not at all obvious.

See the 'physics' forum on this site for an example of the correct coupling settings.


fG

[qzdcg8]

Standard Yard Curves are also very tight.

[johncas]

What are the Tight Tram Curves in X Tracks called in the route editor.

[mdanie]

As I have my trusty Xtracks tracklist (from your XTracks\documents\tracks.htm file!) in front of me, they are:

a1t30dTram* (Lft; Rgt or Y) and there is a
a1t60r20d tight curve too.

hope that helps,
mdanie