What are current NHRA rules on roll bars for 10.00et
08-15-2006, 08:29 PM
#1
What are current NHRA rules on roll bars for 10.00et What are current NHRA rules on roll bars for 10.00et?
what pt roll bar do I need?
are the low slung door bars legal?
are swingouts legal?
are bolt ins legal?
I was thinking about the wolfe 6pt bolt in moly with lowslung if its legal
what pt roll bar do I need?
are the low slung door bars legal?
are swingouts legal?
are bolt ins legal?
I was thinking about the wolfe 6pt bolt in moly with lowslung if its legal
08-15-2006, 08:54 PM
#3
at what point must it be weld in or is it always weld in the car is not that fast and won't be for a long time right now it is low 11s range but I would like to be at high 10s by next year. I probley won't go any faster than that but I thought I might someday.
08-16-2006, 07:26 AM
#6
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11.00-11.49 in a hardtop/t-top requires a minimum of a 5-point rollbar, either bolt-in or weld-in. Only the driver-side door bar is required, but most do the passenger bar as well for chassis stiffness.
Correct!
Also, 10.00-10.99 et's can also use the 5-point roll bar, unless the car has firewall, frame or floor mods (with the exception of wheel tubs only), then a roll cage is required.
Convertibles require the 5-point at 13.49 and quicker.
Derek
Originally Posted by STOCK1090
Swingouts are legal. Sidebar must pass driver at the midpoint between the shoulder and the elbow.
Also, 10.00-10.99 et's can also use the 5-point roll bar, unless the car has firewall, frame or floor mods (with the exception of wheel tubs only), then a roll cage is required.
Convertibles require the 5-point at 13.49 and quicker.
Derek
08-16-2006, 09:03 AM
#7
Originally Posted by Villain281H
11.00-11.49 in a hardtop/t-top requires a minimum of a 5-point rollbar, either bolt-in or weld-in. Only the driver-side door bar is required, but most do the passenger bar as well for chassis stiffness.
Correct!
Also, 10.00-10.99 et's can also use the 5-point roll bar, unless the car has firewall, frame or floor mods (with the exception of wheel tubs only), then a roll cage is required.
Convertibles require the 5-point at 13.49 and quicker.
Derek
Correct!
Also, 10.00-10.99 et's can also use the 5-point roll bar, unless the car has firewall, frame or floor mods (with the exception of wheel tubs only), then a roll cage is required.
Convertibles require the 5-point at 13.49 and quicker.
Derek
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08-16-2006, 10:24 AM
#9
It does not have to be welded to the floor for 10.0. If you get a bar like the wolfe the down bars are bolted (so you can put in the car) and to be 'legal' those two bars have to be welded, thats it. Bolted in floor attachment is prefectly legal.
I dont even see in the rulebook where a cage HAS to be welded to the floor, it says in black and white they can be bolted in, 2006 NHRA rulebook, page 211 mid page:
"On unibody cars with stock floors and firewall (wheel tubs permitted) the roll cage may be bolted OR welded to the floor/rocker box via 6" X 6" .125 steel plates similar to the roll bar attachment of paragraph 4:10, page 214."
Since 6pt bars do not need to be certified most likely the low slung bars will pass tech 99.999% of the time. I have seen certified cages that the door bars were way too low (and high).
I dont even see in the rulebook where a cage HAS to be welded to the floor, it says in black and white they can be bolted in, 2006 NHRA rulebook, page 211 mid page:
"On unibody cars with stock floors and firewall (wheel tubs permitted) the roll cage may be bolted OR welded to the floor/rocker box via 6" X 6" .125 steel plates similar to the roll bar attachment of paragraph 4:10, page 214."
Since 6pt bars do not need to be certified most likely the low slung bars will pass tech 99.999% of the time. I have seen certified cages that the door bars were way too low (and high).
08-16-2006, 11:04 AM
#10
13.99 to 11.500
Use these rules in addition to the general rules for full bodied cars only.
Driveshaft loop required if running slicks, and remember the tech can call drag radials slicks at his disgression.
Convertibles running faster than 13.49 must have rollbar and SFI 16.1 restraints
Helmet must be Snell 95, K98, 2000, 2005, SFI 31.1, 31.2, 31.1a, 31.2a, 31.1/2005, 41.1, 41.1a, 41.2, 41.2a, 41.1/2005. SFI 31.x = SA SFI 41.x = M
IHRA also allows Snell 90, for this class only.
If your helmet doesn’t have a clearly marked designation from this list, don’t be pissed if you get turned away.
NHRA only. All non-OEM supercharged, non-OEM turbocharged, and nitrous cars need SFI 3.2a/1 fire jacket. (Should have put this in the general rules too as this is for any ET slower than 10.00.)
11.49 to 11.00
Use these rules in addition to the general rules and 13.99 to 11.50 for full bodied cars only.
Flywheel and clutch must be SFI 1.1 or1.2
Flywheel shield meeting SFI spec 6.1, 6.2, 6.3, or 9.1 mandatory.
Driveshaft loop mandatory reguardless of tire type.
Rollbar mandatory
SFI 16.1 5 point restraint mandatory, updated every 2 years.
M-SA90 helmets are no good for this ET at IHRA
SFI 3.2a/1 fire jacket
10.99 to 10.00 or cars running 135+ mph
Use these rules in addition to the general rules and 13.99 to 11.50 and the 11.49 to 11.00 rules for full bodied cars only.
SFI 18.1 harmonic balancer mandatory
Aftermarket axles and axle retention device mandatory
SFI 4.1 spec transmission shield required on automatic trans cars
Rollcage required for convertibles or cars running faster than 135.
Rollbar is still OK for full bodied cars with stock firewall, floor, and body.
SFI 29.1 flexplate if car runs 135mph
Use these rules in addition to the general rules for full bodied cars only.
Driveshaft loop required if running slicks, and remember the tech can call drag radials slicks at his disgression.
Convertibles running faster than 13.49 must have rollbar and SFI 16.1 restraints
Helmet must be Snell 95, K98, 2000, 2005, SFI 31.1, 31.2, 31.1a, 31.2a, 31.1/2005, 41.1, 41.1a, 41.2, 41.2a, 41.1/2005. SFI 31.x = SA SFI 41.x = M
IHRA also allows Snell 90, for this class only.
If your helmet doesn’t have a clearly marked designation from this list, don’t be pissed if you get turned away.
NHRA only. All non-OEM supercharged, non-OEM turbocharged, and nitrous cars need SFI 3.2a/1 fire jacket. (Should have put this in the general rules too as this is for any ET slower than 10.00.)
11.49 to 11.00
Use these rules in addition to the general rules and 13.99 to 11.50 for full bodied cars only.
Flywheel and clutch must be SFI 1.1 or1.2
Flywheel shield meeting SFI spec 6.1, 6.2, 6.3, or 9.1 mandatory.
Driveshaft loop mandatory reguardless of tire type.
Rollbar mandatory
SFI 16.1 5 point restraint mandatory, updated every 2 years.
M-SA90 helmets are no good for this ET at IHRA
SFI 3.2a/1 fire jacket
10.99 to 10.00 or cars running 135+ mph
Use these rules in addition to the general rules and 13.99 to 11.50 and the 11.49 to 11.00 rules for full bodied cars only.
SFI 18.1 harmonic balancer mandatory
Aftermarket axles and axle retention device mandatory
SFI 4.1 spec transmission shield required on automatic trans cars
Rollcage required for convertibles or cars running faster than 135.
Rollbar is still OK for full bodied cars with stock firewall, floor, and body.
SFI 29.1 flexplate if car runs 135mph
