Quote:
Originally Posted by BonzoHansen
Problem with harnesses is you need much better rollover protection. That would be too much weight too high up, since it would have to be part of the roof assembly – and a raised CG would increase the likelihood of rollovers. Ha ha.
If you are held in your seat like race driver, you need cage-like performance w/o an actual cage so passengers don’t crush their skulls on it (and we won’t talk head & neck issues). The 3 point actually allows you to move with the car and away form the roof in event of a rollover. Or so smart people have told me.
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Well if the seat incorporated a locking mechanism and a full heavy frame you could eliminate the need for a cage. Some seats already have the upper retractor in the shoulder area already, mostly in trucks I think.
I cant argue with what you are saying about moving away from the roof, but if the vehicle is overturning I would think you are going to be moving towards the roof or the direction of inertia. And I am not saying with a 4 point system you have to be completely strapped into the seat like a race car, the shoulder harnesses would not need to be super tight, just worn properly as with any other seat belt.
I guess my overall point was that 3 point belts are a compromise but IMO there is too much movement available to the driver in an accident.