Schroth Racing All models - Competition Instructions - Manual (Page 44)

Anti-sub Strap twin bracket installation
A twin bracket installation is used for 6-point anti-sub straps of all kind.
It allows easier installation because the two brackets will clamp the
webbing while it is being bolted in place.
The twin bracket system is also light and flat and therefore commonly
used in open wheel racecars or in cars where drivers are sitting quite low
in the chassis.
• Twin brackets are available with 20° and 45° bends.
• 20° bend twin brackets are to be used for rearward routed anti-sub
straps [typical Formula Belt installation]
• 45° twin brackets to be used for downward installation as suggested
for T-bar and Hybrid TM versions.
• All standard catalogue formula models come with 50 mm [2”]
webbing and matching twin brackets. If specified so, made to
measure racing harnesses can come with 44 mm anti-sub straps and
matching brackets, except Hybrid
TM models. Formula and Hybrid TM
versions are not interchangeable.
• Twin brackets are prepared for 8 mm [5/16”] bolts [10 mm optional].
• 8 mm bolts and matching reinforcement plates are supplied with
racing harnesses.
For installation you need:
• anti-sub open end straps
• 4x twin brackets
• 2x bolts 8mm as supplied or 5/16” grade 8.8 or 10.2
• 2x spring washer matching bolt diameter
• 2x reinforcement plate with 8 mm thread [SCHROTH PIN 01344, for
8 mm bolt use only]]
Installation
1. Select anchorage position meeting the geometrical requirements
described in section “Anchorage Locations and Geometries” for 6-
point anti-sub strap routing.
2. Make sure the anchor points are symmetrically aligned to the seat.
3. If you have to create anchor points by yourself, strictly follow the
procedures and WARNINGS in section “Anchorage Locations and
Geometries”.
4. Select direction of angled brackets. The twin brackets must point
towards the strap slot in the seat when being installed.
5. Properly position anti-sub strap so it will correctly engage the buckle.
6. Route webbing through brackets by following these instructions:
a] position both brackets onto each other with the angled bend
pointing as selected above [4]. You will have an “outer” and an
“inner” bracket,
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