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Description of spearway



Description of “spearway”
based on the following drawing of a two axle
boogie or railway vehicle.

The first wheel running on the
OUTSIDE tries to climb OUT of the curve track and to leave the curve track centre.

But the
INNER wheel of the following wheel set tries to climb INSIDE the curve track.

The wheel on the inside of the second wheel set moves in
a forced way.
It is pressed towards the
outside by the rail.

The drawing examples the case of a
HEAD rail (VIGNOL rail).

In the
explanation of “spearway” there is no difference between a head rail (vignol rail) and a grooved rail.



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