[DeTomaso] Asa's installing the roll cage

[Julian Kift]

FWIW, I intend to cut a hole in the carpet and a slit so it will fold back aroud teh tubing and cover the mounting plate. I'm gonna then get the carpet edged (is fluted the correct technical term?) all the way around and velcro them in place on the rockers as I'm guessing a tech inspector will at some point want to lift them to see the mounting.

 

Julian
 
> From: MikeLDrew at aol.com
> Date: Sat, 30 Jan 2010 20:58:52 -0500
> To: guson at home.se; detomaso at realbig.com
> Subject: Re: [DeTomaso] Asa's installing the roll cage
> 
> 
> In a message dated 1/30/10 17 34 37, guson at home.se writes:
> 
> 
> > Carpet between cage and car: Big time no-no IMO.
> > 
> 
> If the cage is just there for looks (as most of them are), then it's not a 
> problem. But if you're installing a roll cage with the idea that you might 
> actually want it to function someday, then yes, you're absolutely right. 
> It's critical that you get metal-to-metal contact between the feet of the 
> roll cage, and the chassis of the car, which means the carpet HAS to go.
> 
> Car crashes can be incredibly violent things. In an impact, the carpet 
> would easily crush and allow the roll cage to move around. There is a shear 
> plane there, and the bolts could easily shear and cause the roll cage to 
> come loose, rendering it useless. That's one of the many things I learned 
> (well, not about roll cages and carpet specifically, but rather more generally) 
> when I went to the Air Force's crash investigation school. We studied 
> failures that led to airplane crashes, as well as failures that took place 
> during the course of crashes, and one of the important points that was stressed 
> was that when two things that are supposed to be bolted together are tight, 
> they are strong, but when the bolts are loose (which is what they would be if 
> there was carpet between them), they are incredibly weak, and the weak link 
> is the bolts.
> 
> It would not surprise me if a roll cage that was bolted on top of carpet 
> would fail tech, if the tech inspector noticed it.
> 
> Figure out where the footprint of the cage is on the carpets, mark them, 
> then cut the carpet there. If you don't want to leave the cage in place 
> permanently, you can probably glue the carpet back in place on a semi-permanent 
> basis, or come up with some other aesthetically pleasing solution.
> 
> Mike
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