Schroth Racing All models - Competition Instructions - Manual (Page 16)

A NTI - SUB STRAP ROUTING
Anti-submarine strap design and routing are directly related to effective
upper torso restraint. Remember, an occupant’s body can only be
effectively restrained through its hard points.
¾
SCHROTH has developed a range of models, which allow a direct
load transfer from the shoulder belts through the rotary buckle into
the anti-sub strap. See Profi 5-, Profi 6- and Hybrid
TM models.
¾ The different racing harness geometries allow specific installation
according to the requirements of each model.
The soft tissue on the upper thighs is not considered a hard point.
Therefore the Formula-type [D-ring] anti-sub straps are designed to run
flat over the upper thighs and then rearwards to provide the needed
restraining function.
Never use the SCHROTH Racing Harness unless the racing seat is
designed with anti-submarining holes.
Never run the anti-submarining straps over the front edge of a
factory seat down to the floor. Such routing does not provide the
desired anti-submarining effect, and in fact encourages
submarining, which can cause severe injury and death.
P ROFI 5- POINT MODELS
Anti-submarining strap routing in any seating position must follow the
tangential touching of the occupant’s chest and groin. Such routing is a
compromise to help reducing the risk of crotch and groin injuries during
a frontal impact. 5-point racing harnesses are less safe, proven by
computer simulation, sled testing and in real world accidents. Therefore
SCHROTH strongly recommends the use of 6-point racing harnesses only.
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