The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: email@example.com (milne_v)
Subject: Re: Disk drive handling in assembly
Date: 5 Oct 2002 13:16:12 -0700
References: <3D9CF7A9.BF4BB1C0@webaccess.net> <firstname.lastname@example.org> <3D9D1517.F9300485@webaccess.net> <3D9D9C2D.597669CD@webaccess.net>
NNTP-Posting-Date: 5 Oct 2002 20:16:13 GMT
Chuck Simmons wrote in message
> I didn't ask which way up the drives are mounted. I never heard of any
> sensitivity to that when there is forced air cooling. I can't think of
> anything inside of a head disk assembly that has any orientation
> sensitivity. All of the bearings are dead loaded and up heads and down
> heads refers to gimble orientation rather than load direction unless
> that has changed. The other engineer considering this issue is a
> mechanical engineer and he didn't ask about orientation either. Do you
> have evidence that it matters?
It used to matter, and we learned to install drives either horizonltal
or vertical, but never up-side-down. I used to remember why, it had
something to do with the bearing. Maybe it's not a issue with newer
product, it's just a rule of thumb I stuck by.
> As it happens, I probably know some of the people who designed these
> drives since I think I know where they were designed (brand and type
> give me a big clue that the drives are probably not Silicon Valley,
> Irvine CA or Shrewsbury MA designs).
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup