[arachne] Re: O.T. Panel beaters - Was: User-friendliness or lack thereof in Arachne
From: "Eric S. Emerson" <wildrice5@xxxxxxxx>
To: arachne@xxxxxxxxxxxxx
Date: Tue, 7 Feb 2006 03:23:04 -0500
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Hi Pete,
The problem in the first Corvettes was
not too much elasticity.....the problem was the
bodies would actually break right off the frames
because of lack of elasticity and because of poor
design based on a lack of experience with working
with plastic..
Eric
On Tue, 07 Feb 2006 13:13:28 +0011 "Peter Lawrence"
<peterl@xxxxxxxxxxxxxx> writes:
>
> On Sat, 4 Feb 2006 04:20:02 -0500, Eric S. Emerson wrote:
>
> .
> .
> .
> > As you say, there have been cars built with plastic
> > panels that are/were very resistant to minor dents but
> > most plastic used on cars so far is not real durable.
> > The tough plastics cost too much and engineers are
> > just learning how to use them appropriately. The
> > first Corvettes built back in the '50s had a lot of
> > problems with structural body failure because the
> > engineers didn't know how to use the fiberglass
> > plastic appropriately. It was a new concept and
> > they needed experience designing and building with
> > plastc/fiberglass composite materials.
>
> The largest problem wasn't that they couldn't make them tough enough
> but
> that when they did, it had too much "give" (elasticity). You got
> things
> like doors that wouldn't close because weight changes had made too
> much
> deformation for the tolerances. PML.
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