roll cage tubing size

[esr]

Can someone clirify the size of the tubing, seems to me that the rules state that cars over 3000lbs need to run 2 inch tubing.

Talking to the local builders they tell me that 1 3/4 is all you need.

Anyone knows for sure.

 

Thanks

[dkmura]

Can someone clirify the size of the tubing, seems to me that the rules state that cars over 3000lbs need to run 2 inch tubing.

Talking to the local builders they tell me that 1 3/4 is all you need.

Anyone knows for sure.

 

Thanks

 

Better read the CCR again- it clearly states for cars weighing between 3,001-4000 pounds, 1.75 X 0.120 wall 4130, seamless alloy or DOM is required. ERW is NOT allowed (p. 61).

[esr]

thanks

 

Can someone clirify the size of the tubing, seems to me that the rules state that cars over 3000lbs need to run 2 inch tubing.

Talking to the local builders they tell me that 1 3/4 is all you need.

Anyone knows for sure.

 

Thanks

 

Better read the CCR again- it clearly states for cars weighing between 3,001-4000 pounds, 1.75 X 0.120 wall 4130, seamless alloy or DOM is required. ERW is NOT allowed (p. 61).

[dmdirks]

Can someone clirify the size of the tubing, seems to me that the rules state that cars over 3000lbs need to run 2 inch tubing.

Talking to the local builders they tell me that 1 3/4 is all you need.

Anyone knows for sure.

 

Thanks

 

Better read the CCR again- it clearly states for cars weighing between 3,001-4000 pounds, 1.75 X 0.120 wall 4130, seamless alloy or DOM is required. ERW is NOT allowed (p. 61).

 

Actually, according to section 15.6.18 of the 2012.2 CCR, it says:

For the purposes of determining roll bar tubing sizes, vehicle weight is as raced, but without fuel and driver.

 

2501-3000lbs

1.500" x 0.120" Seamless alloy (4130), Seamless mild steel....

1.750" x 0.095" Seamless alloy (4130), Seamless mild steel....

 

3001-4000lbs

1.750" x 0.120" Seamless alloy (4130), Seamless mild steel....

 

I just read that Palmettogasman's car came in at 3040# with a 185# driver...which means his car alone weighs 2855#. So if I'm understanding this correctly his cage would be legal if it was constructed with 1.500" x 0.120" 4130.

 

So for those who have built cages already, what tubing size did you use, and do you have pictures to share?

[Fixxxercask]

I just had mine done over the winter with the 1.75x.095 tubing. I noticed that in the rules. My car without fuel and driver is about 2850lbs.

 

 

 

[Jeremy C.]

Went with 1.75x.120 for extra safety for my build!

[scotts300]

Went with 1.75x.120 for extra safety for my build!

 

Hi Jeremy!

When do you plan to debut your build at an event?

 

All - how many feet of tubing do you estimate are used to build the cage? 40-50?

[Jeremy C.]

Went with 1.75x.120 for extra safety for my build!

 

Hi Jeremy!

When do you plan to debut your build at an event?

 

All - how many feet of tubing do you estimate are used to build the cage? 40-50?

 

 

Shooting for end of this month! (Fingers crossed).

 

I think we ordered 80' of tubing, but that was going to be more than enough!

[Blackbird222]

Jeremy's cage can be seen in the latest issue of SpeedNews - http://www.snmagcurrent.com/publication/?i=120245&p=58

 

Another view of "the office" -

 

Moti @ Blackbird Fabworx

[velocitymotorsports]

Cage looks good but it looks like the lower bar and upper support bar would be in the way of a quick exit. Ill get some pictures of the cages that hanksville hotrods did for our 350 i anyone is interested in seeing how its all tucked in. Good to see some spec build pics. Thanks guys and gals.

[Jagerz]

Cage looks good but it looks like the lower bar and upper support bar would be in the way of a quick exit. Ill get some pictures of the cages that hanksville hotrods did for our 350 i anyone is interested in seeing how its all tucked in. Good to see some spec build pics. Thanks guys and gals.

 

Yes, I would be interested in seeing that... getting a cage built very soon.

[Blackbird222]

Cage looks good but it looks like the lower bar and upper support bar would be in the way of a quick exit. Ill get some pictures of the cages that hanksville hotrods did for our 350 i anyone is interested in seeing how its all tucked in. Good to see some spec build pics. Thanks guys and gals.

Thanks.

I'm assuming you're refferring to the A pillar support which may appear that way in some pics because of the angle, but in reality barely takes anything away from the window opening.

 

Cheers,

 

Moti