Stiction

[dwight elvey]

>From: M H Stein <dm561 at torfree.net>

>----------------Original Message:
>
>Date: Sat, 09 Dec 2006 09:18:32 -0800
>From: "Chuck Guzis" <cclist at sydex.com>
>Subject: Re: Stiction
>To: "General Discussion: On-Topic and Off-Topic Posts"
>	<cctalk at classiccmp.org>
>Message-ID: <457A7F68.30292.230D317 at cclist.sydex.com>
>Content-Type: text/plain; charset=US-ASCII
>
>On 9 Dec 2006 at 7:11, dwight elvey wrote:
>
> > I have several friends that worked at Seagate when they had
> > problems of stiction. It was not a lubricant problem. It was
> > caused by the surfaces being too smooth. When to really
> > smooth surfaces sit together for a long time, the air is squeezed
> > out. Once the surfaces really touch, there is a thing called
> > molecular adhesion.
> > Anyone that has worked with guage blocks is familair with
> > this.
>
>That's the story that I got from the Seagate marketing engineer when
>I complained about new ST-225's occasionally showing this problem. .
>
>However, Wikipedia states that the problem really is heat and
>lubricants:
>
>http://en.wikipedia.org/wiki/Stiction
>
>So, the moral is "never trust a marketing guy", I guess.
>
>Cheers,
>Chuck
>
>-------------------- Reply:
>
>Or don't believe everything you read on Wikipedia; in my experience
>(quite a few Seagate ST-225's and 251's, and recently even a Conner
>IDE drive) it was always heads sticking to platters when the drive
>was shut down after running for a long time. But perhaps bearing lube
>was also a problem (that I just never ran across).
>
>mike

Hi
I got my information from enginers that actually worked on the
problem. I would trust them over Wikipedia. I do believe that
bearing could go dry. I've had to fix a number of older floppy
drives with bearing replacements.
Dwight

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