Anyone using a 4-pt harness with stock seats?

[sirwin]

Thanks! I have been getting conflicting info on the safety of this kind of set up, the angle of the rear straps and the use of the head rest to keep them over the shoulders. I was also wondering about using the rear car seat anchors up on the window ledge.
Lastly, do you keep the harness in the car at all times or remove between track days?

Thanks again.

[aznatama]

What is this CGLock thing? I've never used one...

tie strap to stock seat slider adjuster, slide seat all the way back, strap in stock 3pt, force it to "lock," use strap to lift rail lock and slide forward.

That's as good or better than a poorly executed 4pt install... but I guess some people just want to be boy racer. To each their own, just make sure you only use it on the track where you have a bit more control over your car, lest you be t-boned and roll over, thereby snapping your neck on a city street.

[ddeflyer]

I always get a little nervous when I see those schroth belts with such a low anchoring point. I'm sure they know what they are saying, but I still worry that a hard head on into a wall would end up compressing your spine as you move forward. Maybe the break away portion of the belt would change that effect though.

[Black Tire]

Originally Posted by Aznsky

^Corrected

I'm not a big fan of harness bars. Reason is that the intent of the harness is to keep you strapped in place, and in the chance that you roll the car over, your head is basically stuck in place and the roof will crush your head first. With the oem 3 point style, it allows the body to bend sideways and away from the roof.

Now the chances of rolling a car over in autox is very slim, so a harness bar and 4 pt should be ok. But if the car is going to any sort of track, I'd highly recommend either the stock 3 point with a CG lock (and yes your left foot will get really tired from supporting you, I've had mine even cramp on really hot days) or a correct 5 point with a custom rollbar.

Just my opinion.

This is why I started this thread:

Show us your Custom Roll Cage or Roll Bar

Originally Posted by aznatama

What is this CGLock thing? I've never used one...

tie strap to stock seat slider adjuster, slide seat all the way back, strap in stock 3pt, force it to "lock," use strap to lift rail lock and slide forward.

I tried this in my FR-S. Didn't work for me, even though I have used this method in other cars. It seems there is just too much movement in the stock seat for this to work for me; the seatbelt just always loses its lock after a few hard turns. I will be buying a CGLock until I can afford a better option.

[l8apexr]

Originally Posted by mike2100

Way too low

FIA says 45deg is OK. 10 is recommended.

[l8apexr]

Originally Posted by 7thgear

here is what FIA has to say about 4 points

scroll down to section 6.1 through 6.3

http://argent.fia.com/web/fia-public.nsf/DA58BF07DFFA863FC1257690003E34B6/$FILE/253%20%2810-11%29-161209.pdf

So it looks like FIA says 45deg is OK, but 10deg is recommended. Therefore lower anchors should be ok I believe.

[7thgear]

Originally Posted by l8apexr

So it looks like FIA says 45deg is OK, but 10deg is recommended. Therefore lower anchors should be ok I believe.

whether something is okay or not will be revealed during a crash


people have had crashes with bad equipment and walk away unscathed,


FIA says they test things.. and so they make their guidelines, they have their threshold levels of supposed injury, etc.

[wparsons]

In addition to needing a rollbar (or full cage), you NEED to use a HANS (or similar) device if you're going to run 4+ point belts that don't have a break away section like the Schroth ones. Running locked 4 points without a HANS is just asking for neck injuries.

Originally Posted by ddeflyer

I always get a little nervous when I see those schroth belts with such a low anchoring point. I'm sure they know what they are saying, but I still worry that a hard head on into a wall would end up compressing your spine as you move forward. Maybe the break away portion of the belt would change that effect though.

I would bet that is exactly the reason. With the inner shoulder belt tearing and extending you're not being held so firmly and compressed.

[mrk1]

My setup, custom welded in roll bar with harness bar. 4 Point Schroth harness's, these are the correct belts for this application. ASM in the 3" shoulder strap, 2" bolt in lap belts. Street legal PRESS buckle.

Takata Drift harness's can also be ordered in this spec.

When I finish my seat mounts I will switch to a proper fixed back seat and add the crotch straps. I had the buddy club mounts but wasn't happy with them.

[klittl06]

I recently got the scrothe rallye 3 for autox. It mounts the seat belt reel location in the back seat, so there's no issue with the angle (which I've read there is with the 4 in our cars). It quickly and easily breaks down (not completely removes) for when you don't need it. I'm pretty slim so the cg lock with the long buckle in our drivers seat didn't sound like a good fit for me. I've also read they're prone to breaking but I can't confirm or deny that.

It worked great at the first autox event over the weekend.

[l8apexr]

Originally Posted by wparsons

In addition to needing a rollbar (or full cage), you NEED to use a HANS (or similar) device if you're going to run 4+ point belts that don't have a break away section like the Schroth ones. Running locked 4 points without a HANS is just asking for neck injuries.



I would bet that is exactly the reason. With the inner shoulder belt tearing and extending you're not being held so firmly and compressed.

Rollbar or full cage is best. agreed. Unfortunately I will be running w o the rollbar or cage. But harness w Hans.

[wparsons]

What harnesses? I'm hoping Schroth makes a direct fit for the twins, but nothing yet.

[l8apexr]

Takata drift II. Two inch shoulder, perfect for HANS!