do you have you seat mounted on stock floor pan or did you build it to the roll cage?

i came across this thread it is pretty good has various discussions about seats, and cage.

https://honda-tech.com/zerothread?id=748684&page=1

i'd like to see pix of your configuration. in 2005 NASA CCR it shows:

11.4.12 Seats
All seats must be securely fastened to the structure of the car such that they are strong
enough to withstand a major impact. If replaced, the replacement seat should be
installed according to the manufacturer’s instructions.
If stock seats are to be used with a roll bar/cage, care should be taken to prevent the
seat from submarining under the rollbar. Care should also be taken to prevent the
occupant from hitting his/her head on the roll bar/cage.
Passenger seats must meet the same requirements as the driver seat, if used by
passengers.

doesn't seem to say much. the pix below is IT legal. is it technically NASA legal?! the seat rail is tied into the lower horizontal brace for safety. i've seen a bad crash where the seat floor is badly mangled, luckily it was on pass. side. had it been on drivers side, it looks very scrary...





the above looks like a fix position seating. but i don't see why you can't build some thing similar for a slider rail. thoughts?!?! i also like the additional bracing up front.




Modified by quisp at 9:19 AM 9/9/2005

 

To me, that seems like a lot of work for nothing. Making your own mount for the seat is the best way because you can generally put the seat lower and exactly where you want it. Sliders usually raise the seat to much. It depends on your car though. The lower you sit, the better the CG is. Your body is a pretty large weight, or at least mine is!

That particular seat brace looks nice, but to me is overkill. It's not going to do much in a crash. That bracing on the top is small enough to bend with your hand! I personally like a custom seat mount, and a seat back brace that is what you typically see.
If you have an FIA seat, still put a seat back brace in, just don't attach it to the seat.

 

The example in the image above is arguably NOT IT-legal. If it ties into the cage, it essentially creates additional cage mounting points wherever the seat frame is attached to the shell. In that category, to be scrupulously clean, you need to either (a) have the seat bracket/structure attach only to the shell, or (b) have some structure welded only to the cage.

The classic stock car answer is to have a structure built into the driver's door and sill bars, and NOT attached elsewhere, so the seat will move toward the centerline of the car with the doorbars, in a bad side impact.



We went with this option. The Recaro sliders (which are about 3/4" thick) bolt to it, and the side brackets bolt to them. Having rolled the car this past weekend, I can vouch that they did the job.

K

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knestis &raquo;</TD></TR><TR><TD CLASS="quote">The example in the image above is arguably NOT IT-legal. If it ties into the cage, it essentially creates additional cage mounting points wherever the seat frame is attached to the shell. [/img]

</TD></TR></TABLE>

That is correct Captain Rules Nerd. BUT...
If you do the nice little trick Blake did in my old Integra (and is common in many Robinson cars I've seen) you can tie the cage to the seat mount and be totally legal. What you do is weld the seat mount to the left side and rear of the cage and simply let the bottom of the seat mount sit on the floor of the car. If its not welded or bolted to the floorpan, its not an attachment point.
Very safe, very sturdy, and completely legal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knestis &raquo;</TD></TR><TR><TD CLASS="quote">Having rolled the car this past weekend, I can vouch that they did the job.</TD></TR></TABLE>

WTF...you rolled the white VW? How did I miss that?

Story?

 

Sliders allow different drivers to drive the same car. eg I am 5'7" & my teammate is 6'+. Yes, ideally we wouldn't have sliders & the 3/4" it adds to the seat height but I am not going to use a pad in my car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Track rat &raquo;</TD></TR><TR><TD CLASS="quote">

WTF...you rolled the white VW? How did I miss that?

Story?</TD></TR></TABLE>