[DeTomaso] : Stock shoulder harness mounting system

michael at michaelshortt.com michael at michaelshortt.com
Wed Dec 18 23:30:14 EST 2013


That's leap years ahead of current regs for race cars in NASCAR, NHRA and
SCCA. Most let let a car through tech with a few big washers on both sides
of sheet metal.

The intelligent racer welds in solid anchor points to structural street
whenever possible.

Michael
 On Dec 18, 2013 11:22 PM, "Himes, Terry (397C)" <terry.himes at jpl.nasa.gov>
wrote:

>   Holy Crap!  That doesn't look safe to me!
>
>
>  *Terry W. Himes*
>
> *JPL** Jet Propulsion Laboratory*
>
> *Deep Impact Sequence Team Lead*
>
> *Deep Impact Spacecraft Engineer & Activity Lead*
>
> Phone: (818) 393-6261
>
> Cell:     (818) 653-8213
>
> Fax:     (818) 393-3147
>
> *thimes at jpl.nasa.gov <thimes at jpl.nasa.gov>*
>
>
>
>   From: Mike Drew <MikeLDrew at aol.com>
> Date: Wednesday, December 18, 2013 7:00 PM
> To: "detomaso at poca.com" <detomaso at poca.com>
> Subject: [DeTomaso] : Stock shoulder harness mounting system
>
>
>  Hi guys,
>
> I bet few of you have ever had the opportunity to poke around inside the
> chassis of a Pantera to see how the shoulder harness/interior firewall
> cover is retained.  All you can really know is that there are two big bolts
> which thread into some mysterious cavity, and are responsible for saving
> your life in the event of a crash.
>
> I had the opportunity to learn all about this with my car, back in 1996.
> The guy restoring my car couldn't figure out what kind of bolt went into
> the hole, and tried to run a tap through there and change the threads.  The
> tap broke off inside the hole, leading to a major nightmare for me, an
> all-day project to fix it.
>
> Since I spent the other day cutting up the remains of a wrecked Pantera, I
> took it upon myself to cut the firewall open so I could show you guys
> what's going on in there.  It turns out there is a stamped steel piece with
> curved, radiused edges (presumably to impart some sort of strength?) that
> is spot-welded to the inside of the firewall channel.  A simple hardware
> store nut is welded to this plate, and that's what the bolt threads into.
>
> (In my car, what actually happened is that the tap jammed in this nut, and
> then the welds broke, leaving the nut spinning freely with the tap trapped
> in place, and it then had to be cut out etc. etc.)
>
> Here are a couple of photos worth a thousand words each:
>
> [image: image.jpeg]
>
>
>  [image: image.jpeg]
>
> Mike
>
>
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