Can anyone share some tips for adding the front and door bars to a roll bar, preferably one that doesn't involve cutting out the bar, base plates, and making holes in the floor?
The car in question is a 2 door E30 if that helps...
Can anyone share some tips for adding the front and door bars to a roll bar, preferably one that doesn't involve cutting out the bar, base plates, and making holes in the floor?
The car in question is a 2 door E30 if that helps...
Ok, A few questions:
Knowing whose rules this needs to be built to would help.
It's welded in and the base plates are darn thick. It's a Kirk weld-in kit. I want to complete it with the front 2 posts and nascar door bars. Maybe even to the front strut towers but I can live without that for now. I just want to be legal for a typical rule book requiring 6 points.
Here's a pic of the bar as we were installing it. As you can see it's a pretty darn tight fit (kudos to Kirk for a great kit). Looking at it now, I wonder if I could cut my sunroof back out and weld through that...
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Would that be normally legal to use for the bar running from the main hoop to the front? I assumed these were only legal for the side impact bars.
ebonyandivory wrote:
In reply to BigD: I assumed from your post that you were looking for door bars....
ebonyandivory wrote: In reply to BigD: I assumed from your post that you were looking for door bars....
No sorry the entire front half of the cage (roof/A pillar/window bars, and door bars). I do wonder if there's a rule against the forward bars being attached to the main hoop this way...
I was under the impression bolt in door bars were only legal in NHRA(and they aren't really for impact protection).
You have two options going forward. You can do a top halo that is basically a 3 sided box that goes up against the ceiling and then 2 down tubes that extend to the floor in the front. Second option is to do 2 bars that extend from the main hoop forward along the roof lines and then continue down to the floor. Then you add a bar across the top of the roof line to tie the two bars into each other. Once thats done. the door bar between the main hoop and the front down tubes are easy. If you go the first route, the only welding you will need to do on top will be where the tubes attach to the main hoop. You'd be surprised how well you can get a welding tip up there. When I build a complete cage, I either cut the roof off and weld it back when I'm done or cut holes in the floor and drop the whole cage down thru the holes to weld the tops. When all the top welds are done, slide the plates over the holes and weld them up. Don't be afraid to cut something out. It's only metal and it can go right back if you want it to.
The plan is to get the pieces from Kirk as it's pre-formed and the best deal, and their design is the 2 bars plus window bar style.
Yeah right now cutting the roof is looking more and more like the way to go. Either access ports in the roof or cut the sunroof back out, which might get me enough reach. Cutting through the floor would have been a good idea when the car had no drivetrain but now it would be a massive pain, with the fuel lines running past exactly where I'd need to cut. Plus the baseplates making cutting quite tedious.
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