Kirkey Mount to cage Qs
03-16-2007, 11:58 AM
#7
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Okay I am confused. How and why does the seat need to be welded to the cage. What I have read in the NHRA rule book doesnt say that unless I have missed it.
What I read is that the seat has to be placed so that the drivers head sits no more than 6 inches away from the main hoop.
What I read is that the seat has to be placed so that the drivers head sits no more than 6 inches away from the main hoop.
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03-16-2007, 01:36 PM
#9
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You don't have to have your seat welded to your cage, or mounted to your cage,
as far as I know,
but I know its a good idea.
What most people do and I am pretty sure its legal and the way to go,
is:
They have a small 2"-6" tube welded to their crossbar behind the seat,
perpindicular to the cross bar, At the end of this bar they have a flange with 2 bolt holes, and then have their Kirkey bolted to this flange, or mount, with some carriage bolts, so that they don't have bolt heads in their back. This way the back of the seat is mounted to the cage, which should help in the event of an accident.
I hope I described this clearly, its really simple. I have some pics at home,
let me know if you need to see em , I might be able to dig em up this weekend.
as far as I know,
but I know its a good idea.
What most people do and I am pretty sure its legal and the way to go,
is:
They have a small 2"-6" tube welded to their crossbar behind the seat,
perpindicular to the cross bar, At the end of this bar they have a flange with 2 bolt holes, and then have their Kirkey bolted to this flange, or mount, with some carriage bolts, so that they don't have bolt heads in their back. This way the back of the seat is mounted to the cage, which should help in the event of an accident.
I hope I described this clearly, its really simple. I have some pics at home,
let me know if you need to see em , I might be able to dig em up this weekend.
03-16-2007, 01:57 PM
#11
Originally Posted by NHRA Rule Book
6.2 UPHOLSTERY, SEATS
The driver's seat of any car in competition must be constructed, braced, mounted, and upholstered so that it will give 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-pins for seat attachment prohibited. All seats must be upholstered, or as noted under Class or SFI Requirements. Properly braced, framed, supported and constructed seats of aluminium, fiberglass or double layer poly (accessory seats) or carbonfibre are permitted. Single layer fiberglass seats must have steel tube framework, 1/2-inch (12.7 mm) min outside diameter, for support. Aftermarket aluminium seats must have reinforced head rest. Magnesium seats prohibited.
The driver's seat of any car in competition must be constructed, braced, mounted, and upholstered so that it will give 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-pins for seat attachment prohibited. All seats must be upholstered, or as noted under Class or SFI Requirements. Properly braced, framed, supported and constructed seats of aluminium, fiberglass or double layer poly (accessory seats) or carbonfibre are permitted. Single layer fiberglass seats must have steel tube framework, 1/2-inch (12.7 mm) min outside diameter, for support. Aftermarket aluminium seats must have reinforced head rest. Magnesium seats prohibited.
