Best Harness Attachment Point
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Best Harness Attachment Point Something I've been having trouble getting a straight answer on is where is the best place to attach the harness. I've heard some say far away to allow a little "stretch" on impact. And other more reputable sources say as close as possible to the seat (the harness bar) because there is a reduced chance of deformation (less likely to have a change in the tension of the harness) on impact.
Does Any one know of any sanctioning body rules that would apply to this?
Does Any one know of any sanctioning body rules that would apply to this?
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From: Trabuco Canyon, CA
I understand about the angles and related compression forces of the shoulder belts, but what about the mounting location/style? Is it better to bolt them to original belt holes in the rear seats. I've welded in a rear tower bar, should I loop the belt around those? Or is a harness bar directly behind the driver seat the best location, and if so what mounting style?
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Originally Posted by Andros
The G2 harness bar mounts it on the rear shocks, I wish they still made them though 
I would say having the proper height for the bar so that the harness is at the correct angle is more important than the distance. I'm sure you don't want it too far away, but harnesses come pretty long (at least my RCI's did), so I'm sure any reasonable distance is OK.
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Presuming Angle, seat position, and cage construction are percect: How and Where is the best method/point of attachment?
Is there any advantage to be gained with bolt-in verses wrap-around or vise versa?
Any one have any links or quotes from FIA or sanctioning body rule books that say closer/further attachement points are safer?
Is there any advantage to be gained with bolt-in verses wrap-around or vise versa?
Any one have any links or quotes from FIA or sanctioning body rule books that say closer/further attachement points are safer?
Mine are looped around the horizontal cross bar. As long as they are below the shoulder (3"?) they are legal. I have seen poeple weld tabs & loops onto the bar to keep them in place. That is my plan eventually. But it's not required.
I prefer the wrap and buckle as opposed to bolt to the buckle.
The webbed material is not stressed with such a sharp return when looped around the bar. When grossly stressed, the buckle can act almost knife-like. I've seen buckled webbing fray where they loop through the eye-let.
The webbed material is not stressed with such a sharp return when looped around the bar. When grossly stressed, the buckle can act almost knife-like. I've seen buckled webbing fray where they loop through the eye-let.
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From: Trabuco Canyon, CA
Originally Posted by WAHUSKER
Mine are looped around the horizontal cross bar. As long as they are below the shoulder (3"?) they are legal. I have seen poeple weld tabs & loops onto the bar to keep them in place. That is my plan eventually. But it's not required.
Originally Posted by Andros
The G2 harness bar mounts it on the rear shocks, I wish they still made them though
ok we have talked about the shoulder straps.. but where are you guys mounting your side straps to? are you using the stock seat belt holes? i currently am right now because i have bolt in harness's, but my new belts are clip in.. and i need to use Eyebolt's. i have not yet found an eye bolt with the same threading as the stock seat belt holes...
And you probably won't.
If you look under the car, you will notice the factory seat belt backing plate is oval shaped. You can drill through this plate next to the factory hole and probably be good to go.
The outside is a little tougher.
You drill through the floor pan and use big washers or a welded in backing plate or you can cut a hole beneath the stock mounting hole, shove in the eye bolt and bolt it down with the hole you cut big enough to get a wrench on the nut. Then, pop rivet a section of metal over the hole, sealing it with RTV.
Make sure you pin or safety wire those clip in attaching points.
If you look under the car, you will notice the factory seat belt backing plate is oval shaped. You can drill through this plate next to the factory hole and probably be good to go.
The outside is a little tougher.
You drill through the floor pan and use big washers or a welded in backing plate or you can cut a hole beneath the stock mounting hole, shove in the eye bolt and bolt it down with the hole you cut big enough to get a wrench on the nut. Then, pop rivet a section of metal over the hole, sealing it with RTV.
Make sure you pin or safety wire those clip in attaching points.
Instead of drilling through the floor, what if you found an eyebolt in a slightly smaller dia./thread pattern, put it through the factory threaded hole, and put a nut on it on the underside of the car.
Would that work?
Would that work?