frankym,
Here's a quote from the Simpson Racing site:
Quote:
Anchor shoulder straps at point zero to 10 degrees below the top of the shoulder. Note: Preferred mount is as close
to shoulder as possible.
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Notice the straps are not angled upward - doing that is not recommended by any of the belt manufacturers.
Also, if you install the shoulder harnesses remember to install the crotch belts too. They're not a restraint; they keep the lap belt from riding upward in case of a jolt. If the lap belt rises, the passenger can "submarine" and go sliding knees-first into something solid.
So check with your seat belt mfr and note that some recommend up to 4" (or less) below the shoulder line, or up to 40 degrees below horizontal without exceeding 4". Follow their recommendations as to mounting and you'll be good to go.
I can personally attest to the effectiveness of the 5-point system and the dual roll bar system in a 100+ mph rollover and crash.
Can you tell? I think it's a really, really good idea!
Tom