[Vwdiesel] Spring Notes

[James Hansen]

Yes, all springs wear over time.  To them, wear is loss of spring rate
meaning the pounds per inch needed to compress, decreases over usage.
-James

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]On
Behalf Of Mark Shepherd
Sent: Tuesday, October 18, 2005 3:29 PM
To: vwdiesel at vwfans.com
Subject: [Vwdiesel] Spring Notes


As only I can see my question I decided to answer it myself by searching on
the net:

It would appear that springs can be bought in China and are rated at; at
least 200,000 cycles,  before stress fatigue considered.
...Hmm this doesn't seem many cycles...

 A lot of springs were put in cars they were not designed for and most car
designs end up heavier than first allowed for and overload the springs and
we naturally overload car either by tool kits ...{my failure}... or by
driving style/location  VW put their Beetle torsion bars in the Porsche 356
which was heavier and so these cars leant forwards from day 1.
Older cars suffer from the rubber mountings/stops collapsing  and creating
more spring travel and more operating in the yield area.
Assuming no corrosion and no trips into yield region does spring steel sag?
Does a watch mainspring weaken? Eventually I suppose... A set of fishing
scales?
Metal-Fatigue-Miser


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