[DeTomaso] Firestone recomendation

[tmshinro at aol.com]

 FWIW my '86 Porsche 944 Turbo had metal supports taped to the rim behind the rubber valve stems to prevent them from defecting at high speed.  Not sure how necessary it was but it looked kinda cool.

Tom
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-----Original Message-----
From: JJD1010 at aol.com
To: michael at michaelshortt.com; tmshinro at aol.com
Cc: detomaso at realbig.com
Sent: Thu, Apr 1, 2010 10:40 am
Subject: Re: [DeTomaso] Firestone recomendation


 
 

In a message dated 4/1/2010 9:40:21 A.M. Central Daylight Time, michaelsavga at gmail.com writes:
  
valve stem caps, threads and the stems themselves were not designed   to be pressure holding devices
  
 
  
 
  
It was my understanding that the centrifugal force of a   tire spinning at very high speeds would cause the valve stem to push   inward and release air, especially on a stock Pantera Campagnola rim where the   valve stem points directly to the center of the rim. This is why they   came with metal caps that sealed the stem. That's also why they need to be   metal stems. This is the one of those old Pantera factoids that make sense but   who really knows!
  
 
  
Jeff
  
6559