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why are cages manditory by e.t.

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Old 02-11-2008, 12:39 AM
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Default why are cages manditory by e.t.

these are just examples but theres guys that run say 11.90 at 145 and guys that run 11.90 at 105...i mean tahts a HUGE differance in danger...im kinda wondering why isnt it only by mph...so what if you leave hard....
Old 02-11-2008, 12:57 AM
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Cages are not only mandatory by E.T., but also MPH. So the guy that runs 11.90 @ 145 on an IHRA track will be required to have an 8pt cage
Old 02-11-2008, 01:04 AM
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true, nd btw when do you need a cage at an nhra track? does anyone know the rule?
Old 02-11-2008, 01:46 AM
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Originally Posted by Dragkid1917
true, nd btw when do you need a cage at an nhra track? does anyone know the rule?
pretty sure its 11.50 and faster.
Old 02-11-2008, 02:37 AM
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I would like to know some of these rules. I can barely pull of the helmet deal half the time.
Old 02-11-2008, 04:50 AM
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nhra I know you need a 5 pt minimum rollbar for 11.49 to 10.0, once you go 135 or faser it requires a full 10 pt with chassis cert regardless of et. Window net, fire suit, battery shutoff, all that required at 135 or faster mph. 150 rwequires a parachute, again regardless of et. I think 200 mph is 2 parachutes, 25.2 chassis cert, etc.etc but for a car to be even going 150 it better be in the low 9's at a minimum.
Old 02-11-2008, 07:42 AM
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JL's response is correct based on the current NHRA rulebook for cage and roll bar requirements, but that is for hardtop and t-top cars only. Convertibles require a roll bar at 13.49 and faster, a cage at 10.99 and faster.

Derek
Old 02-11-2008, 08:45 AM
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Originally Posted by JL ws-6
nhra I know you need a 5 pt minimum rollbar for 11.49 to 10.0, once you go 135 or faser it requires a full 10 pt with chassis cert regardless of et. Window net, fire suit, battery shutoff, all that required at 135 or faster mph.
I dont have a nhra rule book to read so im a little in the dark.

single layer or multi layer suit, pants/shoes/jacket? I wasn't sure on the mph rule but i thought it is 10.0-11.49 just a single layer fire jacket was required.

what if the battery is still located up front?

I need to pick up a rule book copy.
Old 02-11-2008, 09:10 AM
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Originally Posted by One Bad Z
I dont have a nhra rule book to read so im a little in the dark.

single layer or multi layer suit, pants/shoes/jacket? I wasn't sure on the mph rule but i thought it is 10.0-11.49 just a single layer fire jacket was required.

what if the battery is still located up front?

I need to pick up a rule book copy.
firesuits:
3.2A/1 for 10.00-11.49
3.2A/5 for 9.99 or faster (or if mph is greater than 135)

cutoff:
if battery is in the back (regardless of ET), cutoff required.
If 9.99 or faster (or mph is greater than 135), cutoff required regardless of where battery is
Old 02-11-2008, 09:23 AM
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To elaborate on that, the /1 are single layer, 3 layer are the /5
Old 02-11-2008, 01:01 PM
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3 layer? I didn't know there was such a thing, so when is a double layer needed (pants/jacket/gloves/etc.)
Old 02-11-2008, 02:41 PM
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wait, ****.... hold on. If i run 11.49 or faster in my trans am (t-tops) i need a rollcage?
Old 02-11-2008, 02:47 PM
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Originally Posted by Dragkid1917
wait, ****.... hold on. If i run 11.49 or faster in my trans am (t-tops) i need a rollcage?
You'd need a 5 pt minimum roll bar for 11.49 to 10.00 if the firewall, framerails or floorpans haven't been modified.
If any of them has, then at 10.99 and faster you'll need an 8-point rollcage minimum.

Derek
Old 02-11-2008, 04:36 PM
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ok whats a 5 point roll bar? I know like a 6 point cage but do you have a link to a picture i can see or sumthing.
Old 02-11-2008, 04:49 PM
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Those suits are damn expensive, I forget what mine was but it hurt the funds. Hot as hell too, almost worth going slow to just wear a single layer jacket... Almost.

We got 3 cars certified last Saturday, he only checked 2 welds and the thickness of one bar... Thought that was underdone but it may have been because all three were already certified at one point.
Old 02-11-2008, 04:52 PM
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Originally Posted by Dragkid1917
ok whats a 5 point roll bar? I know like a 6 point cage but do you have a link to a picture i can see or sumthing.
It's the same a a 6, without the passenger side door bar.
Old 02-11-2008, 06:12 PM
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Originally Posted by Hrod382
Those suits are damn expensive, I forget what mine was but it hurt the funds. Hot as hell too, almost worth going slow to just wear a single layer jacket... Almost.

We got 3 cars certified last Saturday, he only checked 2 welds and the thickness of one bar... Thought that was underdone but it may have been because all three were already certified at one point.
I know when they did my 25.5, he checked diameters of alot of bars and sonic tested just about every bar
Old 02-11-2008, 11:01 PM
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Originally Posted by Fireball
I know when they did my 25.5, he checked diameters of alot of bars and sonic tested just about every bar
I'm guessing that was to certify it for the first time? I'm assuming since they were certified (actually didn't run out till next month) that they just assume everything is the same and he's done my dads car 3 times now so I guess I understand it. Struck me a little odd though, I guess they just wear them out the first time you get them done.
Old 02-12-2008, 06:03 AM
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Originally Posted by Hrod382
I'm guessing that was to certify it for the first time? I'm assuming since they were certified (actually didn't run out till next month) that they just assume everything is the same and he's done my dads car 3 times now so I guess I understand it. Struck me a little odd though, I guess they just wear them out the first time you get them done.
technically...the bars rot from the inside out so its still a good idea that they sonic check a few places on recerts...
Old 02-12-2008, 01:34 PM
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for everyone freaking about running 11.49 and faster, chances are youre car is still street driven and you just run that time or faster at a friday night TNT type deal. and chances are the track is not going to sweat you. some tracks are more strict then others. it just depends on where you go. people who go out and race in ihra, nhra, and nmra events are required to have the cages.



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