Airbags ! " We Don't Need No Stinking Airbags"

Where do the Momo shoulder belts attach if not to the floor behind seat?

In lieu of a Race Car Roll Cage or Roll Bar the shoulder belts attach to a Seat Belt Bar sold in the Pantera Aftermarket.

Note in the FIA Instructions that the angle of attachment in relationship to the seat and occupant is important.Too severe an angle (as the Schroth Belts were installed by a PO ) puts downward pressure on the shoulders and spine of the  occupant in an impact adding to injuries.

The Buckle and Loop arrangement will attach to belt Clips or Bars.

Also seat belts have a expiration date similar to a Snell Crash Rating in a Helmet.

Ok, I see. Wrapped around the harness bar. 

But what is the difference between the original setup and the new one? Crotch belts, obviously. But about the shoulder belts? They are now wrapped to the same bar than they first went over, so the belt angle from shoulder line to first hard point is the same, isn'it?

So what makes the first one dangerous and the second one acceptable?

I have to ask, because I don't have a clue... 😎

Imagine being thrust forward as in a frontal impact. ( God forbid )

Basically the loop you've created over your shoulders by attaching the belts to the floor will restrain you by compressing your body downward...not the case if the belts are attached at near shoulder height

But doesn't the harness bar take the downward force as long as the harness goes over the bar? 

Looks great! Certainly the new and fresh belts will be safer than the old weathered ones. Sunlight really degrades the materials quickly. Sorry to rain on your parade but I had always heard it's unsafe to use harnesses in a non-caged vehicle, reason being that in the event of a roof cave in the occupant would be pinned in position and take the full brunt of forces which caved in the roof, versus a traditional seatbelt where the occupant could slump to the side- perhaps getting a bump on the head but avoiding a crushed skull or broken neck. I'm no expert just passing along a concern I have heard from others.

transsami posted:

But doesn't the harness bar take the downward force as long as the harness goes over the bar? 

I'm not a mechanical engineer so I cannot explain the inertial forces involved.

The best I can explain is that in the correct configuration the restraining forces are horizontal rather than vertical.

Perhaps a more technically minded member can explain it better than I

scifi posted:

Looks great! Certainly the new and fresh belts will be safer than the old weathered ones. Sunlight really degrades the materials quickly. Sorry to rain on your parade but I had always heard it's unsafe to use harnesses in a non-caged vehicle, reason being that in the event of a roof cave in the occupant would be pinned in position and take the full brunt of forces which caved in the roof, versus a traditional seatbelt where the occupant could slump to the side- perhaps getting a bump on the head but avoiding a crushed skull or broken neck. I'm no expert just passing along a concern I have heard from others.

Seriously ?

thrillrider posted:

The best I can explain is that in the correct configuration the restraining forces are horizontal rather than vertical.

 

This I agree completely.

But I just don't see what makes the difference here. Well, let's hope we'll get an explanation from someone...

transsami posted:

thrillrider posted:

The best I can explain is that in the correct configuration the restraining forces are horizontal rather than vertical.

 

This I agree completely.

But I just don't see what makes the difference here. Well, let's hope we'll get an explanation from someone...

How are your belts mounted...any pictures?

thrillrider posted

How are your belts mounted...any pictures?

Just an empty body on a rotisserie at the moment. 

But I was thinking pretty much like your first setup, exept I have a roll bar. But let's see, I still have plenty to do before belts... 

Good Luck with your Project.