Posted By: Dodger440
What are the NHRA rules for attaching seat to roll bar? - 05/04/10 09:33 PM
Are there any specific NHRA rules for how to attach the drivers seat back to the roll bar? The car will run 9.60, so it will have to be certified. Just want to make sure I do it right the first time. Thanks.
Posted By: ProStDodge
Re: What are the NHRA rules for attaching seat to roll bar? - 05/04/10 10:52 PM
2010 NHRA
6:2 UPHOLSTERY, SEATS
The driver’s seat of any car in competition must be constructed,
braced, mounted, and upholstered to provide full back and shoulder
support. The driver’s seat must be supported on the bottom and
back by the frame or crossmember. Except as noted in SFI
Specifications, seats must be bolted with four bolts (and nuts and
washers) on the bottom and one bolt in the rear into crossbar; all
bolts must go into frame or crossbraces. Ball-lock pins for seat
attachment prohibited in all classes. All seats must be upholstered,
or as noted under Class or SFI Requirements. All front-engine,
open-bodied, supercharged or turbocharged (gasoline or methanol)
cars running 7.49 seconds and quicker must have a flameretardant-
material-upholstered seat.
Properly braced, framed, supported, and constructed seats of
aluminum, fiberglass, carbon fiber, or double-layer poly
(accessory seats) permitted. Single-layer fiberglass seats must
have steel tube framework, 1/2-inch-minimum O.D., for support.
Aftermarket aluminum seats must have reinforced head rest.
Posted By: Ron Silva
Re: What are the NHRA rules for attaching seat to roll bar? - 05/04/10 11:45 PM
Directly from the rule book:
Specifications, seats must be bolted with 4 bolts and nuts and washers on the bottom and one bolt in the rear into the crossbar. All bolts must go into frame or crossbraces.
09 rulebook, section 6:2 Page 271, gen regs
Posted By: demon440
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 01:47 AM
How is that possible?
My brother is 6'1" and I am 5'5"
we obviously can't keep the seat in the same
position.
Posted By: cheapstreetdustr
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 01:54 AM
mine has a tube welded to the roll bar..
and a slip tube welded to a braket that bolts to back of seat..
i drilled holes..and a clevis and cotterpin.
hold it in place...for adjustment.
i can move it about 4" fore or aft..if i need to.
fwiw
cheapst
Posted By: Dodger440
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 02:18 AM
Thanks guys! The NHRA written rule seems vague on the rear brace, so I guess as long as I have something with at least 1 bolt going to the seat I should be fine.
Posted By: Challenger
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 02:19 AM
What about some of the stockers that have stock interior? Ive always wondered what they do?
Posted By: moparmattkos
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 02:35 AM
I have race buckets in my car and they are against the cage and I have takin it to Gateway / the most picky tech in the country imo . He has never said a word to me about it.
Posted By: demon440
Re: What are the NHRA rules for attaching seat to roll bar? - 05/05/10 03:09 AM
I also thought it had to be
a certain distance from the bar?
