Schroth Racing All models - Competition Instructions - Manual (Page 57)

3.5 Adjustment of HANS ® specific double-shoulder belt
The merge between the “HANS-belt” and the “body-belt” must be
located at a specific minimum distance to the HANS ® yoke tips. This
specific minimum distance is essential for the Head and Neck
Support system to be fully effective with the necessary movement
during an accident.
The following minimum measures must be met:
¾ The total of both numbers
(A plus B in Figure 1) has to
be 100 mm.
¾ The tips of the Head and
Neck Support yokes have
to be at least 30 mm below
the collarbones of the
occupant, when the Head
and Neck Support is pulled
back on the occupant’s
shoulder and the tethers
are straightened.
Follow the procedure below to
make sure the minimum yoke
to merge distance is met:
Figure 1
a) Position the driver in the seat with the helmet and Head and Neck
Support on and tighten the belts as they will be tightened during the
race.
b) Driver’s head/helmet must be pulled forward until the tethers are
straight. Measure the distance between the Head and Neck
Support collar and the helmet = measure A in Figure 1.
c) Subtract A from 100 mm = measure B in Figure 1. This is the minimum
distance which must be achieved between the Head and Neck
Support yoke tips and the belt merge.
Always tighten the “HANS-belt” securely. The effectiveness of the
Head and Neck Support system depends on the friction between the
Head and Neck Support yokes and the “HANS-belt”. It is
recommended that the “HANS-belt” be tightened by a crew
member, rather than the occupant, to achieve a tight adjustment.
HANS-belt
BODY belt
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