Re: [Amc-list] t-tube broke

[Tom Jennings <tomj@xxxxxxx>]

On Tue, 27 Feb 2007, Wrambler242@xxxxxxxxxxx wrote:

> Once the two bolts worked loose, the remaining bolts only held half together. The result would have been a continual flexing or hinging of the metal at some point around the remaining bolts.
>  Locking rear brakes, downshifts and general road vibrations all added up to failure.
> I've never heard of one failing before! I'd bet if the missing two bolts would have been diagonal he'd still be driving along unaware of the issue!

I'm sure Mark has it 100% right.

It's a bummer, but it's good to actually identify failures
like this.  It's interesting now to think of the forces on
that otherwise inocuous joining of parts. I bet some engineer,
now long forgotten, did some careful calcs on that part.

I will crawl under my car and check them this weekend! But
I do recall the bolts are fine-threaded, something like
7/16-20's. Only important joints get nice hardware in
mass-produced cars.


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