**Does anyone know anything about these rollbars??**

[MikeK]

http://www.safedrives.com/proddetail...RollBar&cat=72

i want to order one soon but dont know if they meet certain standards on the track

thanks

[Dave]

linky no worky for me

[MikeK]

hmm thats odd

http://www.safedrives.com/proddetail.asp?prod=SW8ptRollBar&cat=72

lets try it again

[Dave]

You definitely want DOM and not ERM. I know nothing of the reputation of this particular brand. I would also think you'd want the diaganol in the main hoop. And real padding for it, not pool noodles.

Maybe someone else smarter than me can chime in and help as well. bimmerforums auto-x and track forum would be a good place to post for info as well.

[MikeK]

You definitely want DOM and not ERM. I know nothing of the reputation of this particular brand. I would also think you'd want the diaganol in the main hoop. And real padding for it, not pool noodles.

Maybe someone else smarter than me can chime in and help as well. bimmerforums auto-x and track forum would be a good place to post for info as well.

thanks...yeah i posted on bimmerforums already...

whats the difference between DOM and ERM?

[Dave]

From the 2006 BMWCCA Club Racing Rules:

19. Roll Cage Tubing Specifications
A. Material. Seamless, or DOM (Drawn Over Mandrel) mild steel tubing (SAE
1010, 1020 or 1025) or equivalent, or chromolly steel tubing (SAE 4130)
shall be used for all roll cage structures.
B. Size. For the purposes of determining roll bar tubing sizes, vehicle weight is
as raced, WITHOUT fuel and driver. Note: There is an allowance of minus
0.010 inches on all tubing thicknesses. Minimum tubing size for the roll
cage is:
1. Up to 1500 lbs.
a. 1.375” x 0.095” DOM/Chromolly/Seamless
2. 1501 - 2200 lbs.
a. 1.500” x 0.095” DOM/Chromolly/Seamless
b. 1.500” x 0.120” ERW* (No issuance of log books for cars with ERW
cages after 07/01/03) *Note- Specifications listed for reference for
inspection of grandfathered vehicles.
3. 2201 - 3000 lbs.
a. 1.500” x 0.120” DOM/Chromolly/Seamless
b. 1.750” x 0.095” DOM/Chromolly/Seamless
c. 1.750” x 0.120” ERW* (No issuance of log books for cars with ERW
cages after 07/01/03) *Note- Specifications listed for reference for
inspection of grandfathered vehicles.
4. 3001 - 4000 lbs.
a. 1.750” x .120” DOM/Chromolly/Seamless.
b. No ERW allowed.
5. Over 4000 lbs.
a. 2.000” x 0.120” DOM/Chromolly/Seamless.
b. No ERW allowed.

[MikeK]

DOM makes the price just jump hehe...damn

[Dave]

yup. But when its your melon you are protecting . . .

[MikeK]

guess i gotta get ready to spend at least $500.00 thanks Dave... i gotta go with all DOM

[Charlie]

ERW is cheap - there's a reason for it. It's also not legal with any sanctioning body any more.

DOM is really the only way to go if you're spending the cash for a full cage.

-Charlie

[nah325i]

safety devices is well known and has a good reputation within the porsche circle. I'm sure its a good choice. I however have been really happy with kirk racing products for my E30s, ive bought both bars and cages from them, prices are a little more reasonable too.

[Rigmaster]

thanks...yeah i posted on bimmerforums already...

whats the difference between DOM and ERM?

DOM is seamless tubing, it's also supposed to be stronger than ERW, and many race sanctioning bodies are now requiring DOM tubing.

ERW is "Electric Resistance Welded" tubing, basically they lay out a long narrow sheet of steel, then curl it up into a tube and weld the 2 ends together where they meet.

DOM tubing is 1.5-2x more expensive to buy than ERW.

Bret.

[asubimmer]

Kirk's comp bar sounds nice...does anyone have pics of it?

[Bavarian3]

A friend of mine is selling his for $275. I don't know if he wants to ship it though.

[MikeK]

A friend of mine is selling his for $275. I don't know if he wants to ship it though.

wait, thats for e30??