Roll Bar? BD Racing

[SweetStreet]

would anyone have any info on this roll Bar?

Opel GT, 8 Point roll bar

I found it searching google the first of my worries is that its not for the opel gt of the 70s its well priced and searching opel on this web sight the pulls up a decent selection for roll bars and cages. im sending an emil shortly to find out.
thanks in advance.

[RallyBob]

That roll bar is for drag racing, not road racing. At least by design, so it won't pass the rules. Although it does say you can get it in ERW, DOM, or chromoly material. ERW (Electronic Reistance Welded) is not allowed by any road racing sanctioning body, FWIW.

If you are going to run SCCA (which I assume you are because of the forum you posted this in), then simply go to SCCA's website and download the rules for the class you wish to run.

As far as off-the-shelf rollcages, only Autopower and Kirk Racing offer Opel GT bolt-in/weld-in cage kits. Call for price, they don't sell many of them therefore they usually don't list them.

HTH,
Bob

[SweetStreet]

Originally Posted by RallyBob That roll bar is for drag racing, not road racing. At least by design, so it won't pass the rules. Although it does say you can get it in ERW, DOM, or chromoly material. ERW (Electronic Reistance Welded) is not allowed by any road racing sanctioning body, FWIW. If you are going to run SCCA (which I assume you are because of the forum you posted this in), then simply go to SCCA's website and download the rules for the class you wish to run. HTH, Bob

All good information to keep in mind, however the websight says "Photo is for clarification purpose only" That makes me wonder what the design difference is, between a dragrace roll bar and autocross roll bar? Just to help me narrow my selection, or were you just refering to the materials and method of welding?
I have been reading the rule's and i sent the email to the company so i suppose i will wait to here from them.
Thanks,
Cameron Keating

[RallyBob]

Originally Posted by SweetStreet All good information to keep in mind, however the websight says "Photo is for clarification purpose only" That makes me wonder what the design difference is, between a dragrace roll bar and autocross roll bar? Just to help me narrow my selection, or were you just refering to the materials and method of welding?

A drag race rollcage will have the forward 2-points as shown in the photo, going from the main hoop down towards the forward floor of the car. It will generally not have a diagonal brace in the main hoop, and generally not have a harness bar behind the driver's seat (but it might).

Chromoly is also generally not used anymore by any road racing sanctioning bodies due to the fact that incorrect welding makes them very unsafe (embrittled weld joints, usually from MIG welding or really bad TIG welding!). It also does not 'fold' or crush as nicely as mild steel in a crash. The crush allows for greater impact absorption. ERW steel (welded seam) is only legal these days for entry-level classes of drag racing and stock car racing. Every other sanctioning body I know of has banned its' use.

Autocrossing doesn't require any rollbar or rollcage...I mistakenly assumed you were going road racing!

Bob

[jtb]

Originally Posted by RallyBob Autocrossing doesn't require any rollbar or rollcage...I mistakenly assumed you were going road racing! Bob

But you can still have one if you want, it's just that you don't have to.

jtb

[RallyBob]

Originally Posted by jtb But you can still have one if you want, it's just that you don't have to. jtb

Very true, you don't need to use it if you don't want to.



I double checked the website however, and that price ($199.95) is only for the ERW tubing, which is 1.75" x .134" thick.

For the DOM tubing, it's 1.75" x .120" thick, which is still very overkill...I would normally use 1.75" x .095" wall tubing here.

However, even though the rollbar is optional for autocrossing, with the SCCA you must build it to their specifications (so either make it legal or leave it out completely). So you'd have to go with DOM tubing, which is $399.95. Still very cheap IMO. I just quoted someone $350 to add a diagonal brace and harness bar plus two baseplates in an existing cage for $350...and I was $150 cheaper than anyone else quoted.

I'd delete the small diagonals in the main hoop that go from the seat belt bar to the floor, and put a full diagonal in the main hoop from over the driver's head to the passenger floor. Then you'd be legal for SCCA, and later you could even update it to a 'full' rollcage without removing or modifying anything.

Bob

[SweetStreet]

Originally Posted by jtb But you can still have one if you want, it's just that you don't have to. jtb

I understand that the Roll bar or Roll cage is not needed however the reasons im instaling the cage are 1 stiffness to the opel and 2nd safety. knowing my luck and favorite saying i got from honda... "Stupid Hurts" so i would rather have it and not need it. i would like to runing in the modified class, so there is allways that chance.

I found that this cage fits the rules better.

Opel GT, 10 Point Roll Bar
$500

rules are,
Apendix C page 230
http://cms.scca.com/documents/Solo_R...Solo_Rules.pdf

The only concern is i have no reply from the company yet i may have to try harder to get into contact, however i did recieve a response from kirk racing.

"The 6 point weld-in cage starts at 675.00.
Mark Stewart
205-608-1156"

It is $175 more but they had a fast reply so the more than likely have better customer service.

Thanks,
Cameron Keating.

[SweetStreet]

Originally Posted by RallyBob Very true, you don't need to use it if you don't want to. I double checked the website however, and that price ($199.95) is only for the ERW tubing, which is 1.75" x .134" thick. For the DOM tubing, it's 1.75" x .120" thick, which is still very overkill...I would normally use 1.75" x .095" wall tubing here. However, even though the rollbar is optional for autocrossing, with the SCCA you must build it to their specifications (so either make it legal or leave it out completely). So you'd have to go with DOM tubing, which is $399.95. Still very cheap IMO. I just quoted someone $350 to add a diagonal brace and harness bar plus two baseplates in an existing cage for $350...and I was $150 cheaper than anyone else quoted. I'd delete the small diagonals in the main hoop that go from the seat belt bar to the floor, and put a full diagonal in the main hoop from over the driver's head to the passenger floor. Then you'd be legal for SCCA, and later you could even update it to a 'full' rollcage without removing or modifying anything. Bob

aww well i decided Dom for the material and a full cage about 30 min ago just took me a bit to post...