Competition Race Legal Roll-Cage

[RacinDuallie]

How exactly does the sanctioning bodies at the DHRA & NHRA want us to spec a in-cab roll-cage that's legal for use and able to pass tech?



Mildsteel tube? Thickness of material wall?



Chromoly tube? Thickness of material wall?

( I'd rather use the chromoly tube- lighter weight)



Any specific locations for the main hoop?

Downtubes?



Side bars? Can they be the swing-out type?

Same rule on where the side bar must pass next to occupants?



Main hoop distance from drivers head?

Location of Legs of each bar to floor? Plate thickness?







What specifications regaurding the legallity of cages in our Race Trucks that weigh in @ 8300 lbs ?

 

[HOSS]

Go to the NHRA web site and you can look at the rule book there. You will find all the answers to your questions and much more. I do not have a scanner or I would post the roll cage pages for you. You need to decide if you are going to go into the 9's also, if you do you must have a certifed cage not just a roll bar and have a cert sticker on your truck. If you have the right person do you cage it is not big deal but you may have to get the welds inspected and if they are not right removed and replaced

You must tie your roll bar or cage to the frame not just the floor. You can use either chromemoly of mild steel for your bars. Mild steel is much heavier of course. If you have an extended cab your bars do not have to exit the cab you can build the cage inside the truck.

It is ok to have swing out side bars.

 

[ob1kobi]

The DHRA site has a rule book that can be downloaded, all the specs that you need will be there. Unless you are running faster than an 11. 49, then you just need a roll bar. No offence but with the size of your truck I personally wouldn't worry about anything more this year, unless you have very very deep pockets and will be able to get that truck on a serious weight diet and on some sort of steroids your not going to need more than a roll bar if that.



Ted

 

[marksmith]

So a go fast daily driver has to have a roll bar that exits the cab... .

Do they count a stout rollbar in the bed rollover protection if its tied to the frame?



Just curious is all. Not too keen on poking holes in the back glass.





Mark

 

[ob1kobi]

I believe the roll bar has to be within so many inches of the drivers head, so I don't think a roll bar in the bed would count, but I am not an expert.

 

[marksmith]

Not more than six behind... . no less than three above.





Guess I'll have to stay above 11. 49

 

[Cummins4Life]

Not more than six behind... . no less than three above.





Guess I'll have to stay above 11. 49

Better slide that plate back a bit then. :-laf

 

[COMP461]

Your best bet is to call NHRA tech . because they provide the primary rules at any NHRA track, which will be your only tracks available to run . IHRA rules are identical , The best guy to talk to is Eric Lowe , he is a diesel guy , and has been helping a great deal on the new Super Stock diesel rules . his number is 626 250 2209



The NHRA rule book provides everything you will need to bring you truck in to compliance .

 

[ob1kobi]

IHRA may not have any tracks in NJ like the NHRA does, but there are several nice tracks within a very reasonable driving distance.

 

[COMP461]

dont get me wrong , I like racing in the IHRA also, they really are sportsman frendly. infact I still hold the National Record in IHRA modified D/ED

 

[ob1kobi]

which will be your only tracks available to run.

I was just responding to this part of your reply so that he would know that there are some nice IHRA tracks withing a reasonable driving distance from NJ, even though NHRA does have tracks in NJ.



Ted

 

[RacinDuallie]

I have seen pics of the TS Perf. truck- Dennis Perrys' and noticed that he had left his rear seat in cab (quad-cab) flipped up and then the cage was put in!!! Why was this done this way? Rules? What's the sense, can't use it now anyhow? Now it can't be flipped down- it's permenately up not in use.

 

[ob1kobi]

Well I didn't think he had the back seat at all, but you would need to check the rules about seats, and factory installed equipment, cause it could be that you have to keep the rear seat in a quad cab, cause there isn't an option to not have the back seat in a quad cab when you purchase the truck from the factory. Need to look at the rule books first and see though.

 

[ob1kobi]

In the DHRA rule book, for Pro Street, under the section concerning Interior, it simply states that there must be a complete interior, aftermarket seat permitted, but must be fully upholstered, this isn't word for word but you can go read it and see the whole section, but this would explain, along with my previous answer, of why he still has the rear seat installed, even though it isn't usable. They don't say that it has to work, it just has to be a "complete" interior

 

[RacinDuallie]

So I guess sticking a milk crate back there as a seat won't be legal? :-laf

 

[Hohn]

It's overkill, but if you use . 120 wall chromemoly you'll be legal in anyone's land. I wouldn't sweat the weight too much-- it's a diesel pickup after all.



jlh

 

[COMP461]

. 120 wall CM is way over kill. and expensive , and weight is everthing , if not trains would be top fuel dragster. Ive spent about $10,000 to get rig of 125 lbs , so you might not go the heavy route, . 083 is plenty

 

[DHRA]

dont get me wrong , I like racing in the IHRA also, they really are sportsman frendly. infact I still hold the National Record in IHRA modified D/ED

You better call Mike Baker and complain, they don't even have a D/ED class listed:

http://www.ihra.com/statistics/records/index.html

 

[COMP461]

The class is was part of the now long gone modified eliminator in IHRA , I set the record ,and when the class went away they started removing the listing as people let their membership expire. I only had a IHRA membership when there was something there to run . here is the record.

 

[DHRA]

I wondered about that, if it was a class of the past, because there is an "F/ED" class.