Re: Roll Cage Certification
[Re: cudaman1969]
#3006177
01/17/22 12:37 PM
01/17/22 12:37 PM
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Joined: Dec 2005
Posts: 11,579 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,579
Fulton County, PA
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Correct. You can have anything in there you want over and above what you need. When you get to where it is required for your situation (9.99, 135MPH) then it needs a tag. Plenty of people put the full cage in even if not required. 1.625 tubing vs. 1.750, safety, chassis stiffness, resale value. going faster in the future
If the results don't match the theory, change the theory.
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Re: Roll Cage Certification
[Re: BigBlockGTS]
#3006250
01/17/22 04:24 PM
01/17/22 04:24 PM
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Joined: Feb 2015
Posts: 2,077 CA
crackedback
top fuel
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top fuel
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CA
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I have a quick question along these lines. If I add a full cage to my car and it only ran in the 10's, would I need a window net? In other words, is the net required for 9.99 or is the net required on any car with a full halo and cage? Call NHRA and get a letter regarding that. Had one friend go round and round with tech about that very issue. Cage but no net, never running under 10.00. Tech wouldn't allow because it had a cage.
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Re: Roll Cage Certification
[Re: CMcAllister]
#3006256
01/17/22 05:02 PM
01/17/22 05:02 PM
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Joined: Sep 2006
Posts: 3,010 Sac, CA
mopowers
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Posts: 3,010
Sac, CA
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When you get to where it is required for your situation (9.99, 135MPH) then it needs a tag. Thanks guys! What if the car is say, a high 10 sec car, but the cage is required because the floor has been modified, or maybe the firewall has been modified? Would the cage need a tag then? Also, what does the NHRA consider a "modified floor?" If subframe connectors are installed through the stock floor w/ 2x2 outriggers to the rockers (also through the floor) for the main hoop to land on, does that mean the floor is now modified, thus requiring a cage w/ sill bars?
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Re: Roll Cage Certification
[Re: mopowers]
#3006363
01/17/22 11:53 PM
01/17/22 11:53 PM
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Joined: Dec 2005
Posts: 11,579 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,579
Fulton County, PA
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When you get to where it is required for your situation (9.99, 135MPH) then it needs a tag. Thanks guys! What if the car is say, a high 10 sec car, but the cage is required because the floor has been modified, or maybe the firewall has been modified? Would the cage need a tag then? Also, what does the NHRA consider a "modified floor?" If subframe connectors are installed through the stock floor w/ 2x2 outriggers to the rockers (also through the floor) for the main hoop to land on, does that mean the floor is now modified, thus requiring a cage w/ sill bars? Frame ties do not constitute a modified floor, Typically you are allowed a 6 square foot area of removable transmission tunnel before anyone says anything. Convertibles also need a full cage at 10.99.
Last edited by CMcAllister; 01/18/22 12:03 AM.
If the results don't match the theory, change the theory.
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Re: Roll Cage Certification
[Re: Blucuda413]
#3006367
01/17/22 11:59 PM
01/17/22 11:59 PM
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Joined: Dec 2005
Posts: 11,579 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,579
Fulton County, PA
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These are some of those questions that you can never convince a local track inspector he's wrong!! The window net ? is classic. Many believe that if it has a cage a net is required. Wrong!! A net is required if the rules REQUIRE a cage, if the cage is not required the net isn't required.. Correct. Used to be that if you had a cage you had to have a net, regardless the ET. That was changed a while back.
If the results don't match the theory, change the theory.
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Re: Roll Cage Certification
[Re: CMcAllister]
#3006498
01/18/22 12:36 PM
01/18/22 12:36 PM
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Joined: Sep 2006
Posts: 3,010 Sac, CA
mopowers
OP
master
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OP
master
Joined: Sep 2006
Posts: 3,010
Sac, CA
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When you get to where it is required for your situation (9.99, 135MPH) then it needs a tag. Thanks guys! What if the car is say, a high 10 sec car, but the cage is required because the floor has been modified, or maybe the firewall has been modified? Would the cage need a tag then? Also, what does the NHRA consider a "modified floor?" If subframe connectors are installed through the stock floor w/ 2x2 outriggers to the rockers (also through the floor) for the main hoop to land on, does that mean the floor is now modified, thus requiring a cage w/ sill bars? Frame ties do not constitute a modified floor, Typically you are allowed a 6 square foot area of removable transmission tunnel before anyone says anything. Convertibles also need a full cage at 10.99. Thanks for the clarification. I was worried that my subframe connectors and outriggers would require me to install rocker bars since they protrude into the otherwise factory stock floor. Unfortunately, the rulebook allows for multiple interpretations. Thanks again.
Last edited by mopowers; 01/18/22 12:36 PM.
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Re: Roll Cage Certification
[Re: mopowers]
#3006502
01/18/22 12:48 PM
01/18/22 12:48 PM
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Joined: Dec 2011
Posts: 201 Texas
Chief
enthusiast
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enthusiast
Joined: Dec 2011
Posts: 201
Texas
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Does a roll cage need to be certified if a cage isn't required (e.g., 10.50 sec car with unmodified floor, firewall, etc.)? At what point does a cage require a certification? IHRA anything running quicker than 6.00 1/8 mile, 9.00 1/4 mile or 150 mph. Dave
Dave Covey
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Re: Roll Cage Certification
[Re: BigBlockGTS]
#3006504
01/18/22 12:51 PM
01/18/22 12:51 PM
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Joined: Dec 2011
Posts: 201 Texas
Chief
enthusiast
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enthusiast
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Texas
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I have a quick question along these lines. If I add a full cage to my car and it only ran in the 10's, would I need a window net? In other words, is the net required for 9.99 or is the net required on any car with a full halo and cage? IHRA, if the class or car "requires" a cage then a window net is also required. If you run in the 10's then you do not need a net. Dave
Dave Covey
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