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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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