>From
[email protected] Tue Sep 12 21:19:08 2000
Date: Tue, 12 Sep 2000 21:46:44 -0400 (EDT)
From: Greg Gogates
[email protected]
To:
[email protected]
Subject: External documents - tires, pressures & calibration
Sender:
[email protected]
Date: Tue, 12 Sep 2000 09:59:50 -0500
From: Jay Warner <
[email protected]>
Reply-To:
[email protected]
To: Greg Gogates
[email protected]
Subject: Re: External documents - tires, pressures & calibration
Dear ISO17025 people,
This posting below was made in early July, before the Firestone/ Bridgestone tire issues hit the public & congressional fan. In some ways, I feel the comments about tire pressure were prescient.
Bridgestone contends that low tire pressure and excessive speed are major contributing causes of tread separation.
Whether or not you (or the data) agree, maybe an occasional check of tire pressure combined with an occasional check of the speedometer would be a good thing for "a useable mode of transport for the purpose intended."
And calibration of the pressure gauge should be included in the debate, as well. Just what is the uncertainty of that air pressure gauge at the gas station, anyway? Not to mention the uncertainty of the air pressure "when the tire is cold" vs. when it is checked. Bridgestone and Ford are debating a difference in pressure of 4 psi, as if the precision of the measurement was smaller than 1 psi.
Jay
Greg Gogates wrote:
> Date: Fri, 7 Jul 2000 16:20:32 -0500
> From: TSmith <
[email protected]>
> To: Greg Gogates <
[email protected]>
> Subject: Re: External documents re2
>
> Greetings Phil,
>
> I like this thread. It brings tears to many peoples eyes. One must assume
> when we impose this Doc Control Issue that the client has a need to maintain
> the most current revision Test equipment with the most current mods that
> warrant the most current printed and published manuals for the instrument.
> In the same light, when was the last time you called the automotive
> manufacturer of the car you drive to obtain the most current ownners manual
> revision for your model car or truck. I hope that if you are still driving
> with out the most current owners manual, that its still a useable mode of
> transport for the purpose intended. ? Humm. But never fear. When the day
> comes that you get stopped for a traffic ticket. (equal to observing a test
> that you didnt do so well on), the officer wont ask for your most current
> copy of your owners manual to justify the stated tire pressure in the manual
> is 38 lbs. and your spare tire was 37lbs.) It didnt make you go faster did
> it. Anyways just laugh this one off and lets focus on making good
> measurements.
>
> The Duke
--
Jay Warner
Principal Scientist
Warner Consulting, Inc.
4444 North Green Bay Road
Racine, WI 53404-1216
USA
Ph: (262) 634-9100
FAX: (262) 681-1133
email:
[email protected]
web:
http://www.a2q.com
The A2Q Method (tm). What do you want to improve today?