Roco 51251 Mode D'emploi page 16

The Roco geoLINE System Grid
A right angle with the dimensions of 385 x 76.5 mm is the basis for the System Grid from Roco
geoLINE.
This grid has been calculated from the length of 22.5° points (200 mm), an equalizing straight
(185 mm) and the opposite arc to the parallel track, where the opposite arc corresponds to
the junction radius of the points. A parallel track separation of 76.5 mm then arises from this
combination.
GB
200 185 200 185
385
385
All other types of points, such as the crossing points and the three-way points are adjusted to
this grid. This allows the construction of unlimited route management without the additional
use of equalizing rails of different lengths. All the following track elements remain in the System
Grid, even in the case of the diagonal installation position of a set of points.
The R2, R3 and R4 basic radii of the new track geometry are also constructed on the basis of
the parallel track separation of 76.5 mm. The curved tracks have a sector angle of 30°; thus, a
complete 360° circle can be formed from 12 curved sections. The left and the right curved sets
of points are intended for the transition between the R3 and R4 radii. Their geometry has been
conceived so that, augmented with the R3 and R4 curved tracks, a 90° circular section again
arises. The parallel track of 76.5 mm enables an unhindered driving operation of long tractive
stock and wagons in the radii.
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