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Re: MGB Jack Failure

To: BobMGT@aol.com
Subject: Re: MGB Jack Failure
From: mgb.roadster@juno.com (Larry A Hoy)
Date: Mon, 9 Mar 1998 00:02:17 -0700
Bob, I've never had the problem.  But judging by the torn strap on my 'B'
someone did.

Larry Hoy (MGB.Roadster@juno.com)
Denver, CO USA
1969 MGB Roadster
1987 Jaguar XJ6 Vanden Plas
==It's not how fast you go, it's how fast you go
fast.===================================

On Sat, 7 Mar 1998 21:26:11 EST Bob MGT <BobMGT@aol.com> writes:
>I was changing a tire on the B today and the jack point (the little tube
you
>slide the jack into) failed. Fortunately I did not yet have the wheel
off. It
>seems the little strap around the tube tore. Now when I first saw how
the jack
>worked I thought damn, there must be a fantastic amount of prying force
on
>that little tube. I figure half the weight of the car on a 6 inch lever,
>that's 500 foot-pounds. Maybe I'm figuring wrong (It's been 25 years
since I
>had statics  in college). Sounds like a good engineering problem to
analyze
>the stress on this part. Luckily only the jack point was damaged. I
won't
>bother to  have it fixed because I will never, never, never use the
standard
>jack again. I will keep an old fashioned scissor jack in the trunk, and
jack
>up one wheel at a time like god intended. I'd like to know if anybody
else has
>run into this problem. 
>
>BTW: The old advise about never crawling under a car supported by any
jack is
>still good advice!   
>
>Bob Donahue (Still stuck in the '50s)
>EMAIL - BOBMGT@AOL.COM
>52 MGTD - under DIY restoration NEMGTR #11470
>71 MGB   - AMGBA #96-12029, NAMGBR #7-3336
>



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