When is roll bar needed

[Slow 30th]

New here but long time reader ( headed to into as soon as this is done). But I'm thinking of trying my hand at the ltx shootout at what point do I need a roll bar or cage. Everything I find is older and want to make sure I'm up to date. Thinking of trying street stock. Thanks everybody.

[Dirtybob]

IIRC 11.50 and quicker calls for a cage....
wouldn't hurt to call the track and ask if in doubt

[Injuneer]

NHRA - Under 11.50 requires a 5-point roll bar. Under 10.00 or over 135 MPH requires an NHRA certified full cage. Converts require roll bar under 13.50.

[Slow 30th]

Thanks guy so that helps me a lot about trying to make it to the shootout

[sseeya]

FWIW,

37681
Roll bar
37682
Roll cage

[Injuneer]

NHRA requirements for "roll bar". This is from the 2016 rule book, haven't checked 2017.

[EDIT]Just checked - 2017 rule book is the same.

[fullforce]

so I wonder if this is why the Dodge Demon is BANNED from NHRA?

Sorry to get off topic...

[agenthol302]

^ Correct along with other safety requirements that were not met. it wasn't the car is to fast for the NHRA its because its to unsafe. anything over 10.00 on new factory production cars doesn't need any upgrades (which is bullshit IMO)

[Injuneer]

Once you go under 10.0 driver needs an NHRA competition license, cage has to be inspected and certified (tagged) by an NHRA inspector, master electrical cutoff, neck collar, SFI-rated roll bar padding, chute (over 150 mph), upgraded fire suit including jacket, pants and gloves, SFI flexplate w/ SFI shield, window net.

There's a lot of stuff that kicks in below 11.5 that seem to be hit or miss as far as enforcement - SFI bellhousing, 5-pt harness, DS loop, SFI flywheel and clutch.

Under 11.0 - SFI trans shield, locking trans dipstick, aftermarket rear axles, SFI harmonic balancer.

And as noted in post immediately above, pure stock requires very little above 10.0

All the above is from the NHRA ET Quick Reference Chart & SFI Expirations. For helmets, Snell SFI 2005 expired at the end of 2016. Now must be 2010 or 2015.

All SFI-rated components have a limited service life, anywhere from two to five years, and must be replaced or recertified by the manufacturer.

[Slow 30th]

So it looks like to don't need any kind of cage or bar for street stock. Thanks everybody much appreciated

[firebird_1995]

So it looks like to don't need any kind of cage or bar for street stock. Thanks everybody much appreciated
In regards to safety requirements for the shootout, all we tech at the event are the rules that the cars need to meet in order to run in the class you're registered. Safety has been and always will be up to the track officials to enforce. In years past, it has been very lax, but that can change any time. We are not going to send you home for a lack of equipment, but they might. Something to keep in mind

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[Injuneer]

But is it truly totally stock, unmodified in any way?

[Slow 30th]

It's right at the limit more less just bolt ons. All I need is driveshaft loop and shocks all around

[agenthol302]

^ the no upgrades for pure stock is only on 2008 and newer. if you run any faster then 11.50 you need safety updates PERIOD. any mods even cat back and intake now on 2008+ technically voids the 10.00 rule.

[fullforce]

Ive heard they dont really enforce it too much on the LTX event anyways lol probably not very many to worry about going much faster than that

[Slow 30th]

I will be in street stock if I ever make it to he track to do some testing


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[firebird_1995]

Ive heard they dont really enforce it too much on the LTX event anyways lol probably not very many to worry about going much faster than that
Just to clarify, (and I know you personally know this, I'm just making a blanket statement), we as the ltx shootout event coordinators do not do nhra safety inspections on the cars. What we do is check that the cars fit the rules for the classes that they're entered in. The track officials are responsible for enforcing the safety standards they have set, not the ltx shootout.

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[fullforce]

And that's how it should be... I was kinda joking anyways

[Dan]

I guess a dumb question but it's related.
Does adding a roll bar increase rigidity of the car? Like would it make the car handle on a road course better or would it make it worse.

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[firebird_1995]

I guess a dumb question but it's related.
Does adding a roll bar increase rigidity of the car? Like would it make the car handle on a road course better or would it make it worse.

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Absolutely helps. In a straight line car, you can see a few tenths in the 60'. Lateral bars off the main hoop help the most. Anything that works against the car twisting up under torque will send that power to the tires vs the chassis

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[SSlowBoat]

I guess a dumb question but it's related.
Does adding a roll bar increase rigidity of the car? Like would it make the car handle on a road course better or would it make it worse.

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yes, stops chassis flex.

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[fullforce]

Friend of mine dropped his 60ft from a 1.5x to 1.30
In a 2nd Gen camaro by adding a 6 point cage

[agenthol302]

it helps a lot, if you don't want to go full bore, I would strongly recommend Sub Frame Connectors! night and day difference in my old street car. along with eliminating a lot of rattles!

[shownomercy]

They make a great ankle biter and something to smack your head into.