MYRX

Question: Does anyone know if you can purchase a SCCA legal "bolt-in" 4-point roll bar? I have received from forum members the names of several shops that can custom build a roll bar. Before going that route, I was wondering if someone made a bolt-in that is SCCA legal. I read and understand the rules as follows:

1. material to be 1.750" x .120" DOM seamless alloy
2. must be a min of 2" above your head when seated.
3. can not be more than 6" behind the seated driver.

What have most of you guys ended up doing when converting from a hardbar to a 4 point roll bar? I know several of our supporters offer chassis bars, not sure if they will meet SCCA requirements.

JiminVirginia

ccj

Legal for what classification? HPDE? Time Trials? Road Racing?

redtopz

A 4 point such as the one shown in the attachment would be OK for solo events (hpde, auto-x, time trials).

http://www.ioportracing.com/Merchant...ory_Code=AP401

For nasa and scca racing, you will need at least a 6 point cage with door bars, window nets, and required bracing plus a fire retarding system. However, if you are sure you will not be racing, a bolt-in 4 point roll bar would be a nice option.

ccj

That's an autopower bar. both my dad and I have that in our C5Z's. If your doing HPDE type of stuff I would have a hard time not seriously considering Pfadt's bar If I didn't already have this one installed.

AU N EGL

Always read the technical rules of the orgainzations you wish to run with.

Pick the strictest rules, and go with that set up.

Some of the bolt in bars are for drag racing and will not pass all tech standards.

Good Luck

2000BSME

You aren't probably going to feel very well protected with that IO port racing bolt in roll bar because it bolts into the floor board (sandwiched balsa wood) not the frame members. Wolfe and Pfadt both have viable options. In my case I custom built mine due to being a convertible and my height of 6'8".

ccj

It is not. IOport is taking stock footage of autopower's bars. The bar shown is likely for a Mustang, Camaro or similar. The picture looks almost identical to the bar I had in my 99 Cobra. The Autopower bar in my car is bolted to plates that are welded to the frame.

Contact IOport or Autopower directly for information about orientation and attachment points of a corvette specific bar.

MYRX

SCCA Track Time Trials require the 4-point bar as I menetioned. I orginally went to PFADT and after reading the rules, they thought their bar would not meet the requirements. I do not intend to W2W. I do NASA events now, HPDE 3, but High Speed Track TT in the SCCA has more safety requirements. I have found several legal 4-point weld-in bars, but not a legal bolt in. Was hoping someone knew of a company producing one.

RX-Ben

From my research there are no true bolt-in setups. All require welding a base plate to the frame. Given the car's consruction, I don't think strictly bolt-in is a viable option (vs with a unibody car). With that in mind - given the potential shipping costs - it might be easier/cheaper to have a local shop fab up a simply roll bar, which will also allow you to add camera mounts, seat braces, etc.

MYRX

I agree! Just hoping, but I think having a custom bar made is going to be my choice, especially since both SCCA TT and NASA TT are going to be my ultimate goals.

2000BSME

I welded two base plates for the front mounting of my custom set up and then I used allthread studs going through the rear suspension subframe replacing 2 of the 4 mounting bolts of the subframe with said allthread studs.

I had to order the studs through Fastenal, as the strength rating and particular diameter of the bolt was difficult to find at the local hardware store. I believe it is 16mm in diameter.

2000BSME

oh. good to know.

0Randy@DRM

We haven't had any issues running our bar with SCCA. It's a weld in bar, which isn't what you wanted but is a better way of attaching anyways!



Randy
www.dougrippie.com

RX-Ben

That cross bar looks quite low for harness use - or is the picture misleading?

ccj

I am assuming that bar attaches to the bulkhead beam similar to my Autopower bar?

0Randy@DRM

It fits 99 percent of seats. If someone needs something different we do them in house, so changes can be made.

The picture is a bit misleading.....
Randy

0Randy@DRM

That is correct.

Randy

MYRX

You sparked my interest. How much $, I did not find it listed on www.dougrippie.com. I will call you if you like.

longdaddy

still safer than harness bars or roll bars that locate shoulder belts too high. I have seen people with shoulder belts angled up 30+ degrees at some DEs. Ugh.