Path: utzoo!utgpu!attcan!uunet!oddjob!ncar!ames!vsi1!daver!mfgfoc!ray
From: ray@mfgfoc.UUCP (Ray Lillard)
Newsgroups: comp.sys.mac
Subject: Re: disk squeak
Message-ID: <393@mfgfoc.UUCP>
Date: 5 Aug 88 15:29:41 GMT
References: <7627@dcatla.UUCP>
Distribution: comp
Organization: FOCUS Semiconductor Sys., Sunnyvale, CA
Lines: 25

From article <7627@dcatla.UUCP>, by dxjsb@dcatla.UUCP (Jack S. Brindle):
> 
> jimc@iscuva.ISCS.COM (Jim Cathey) writes:
>> The traditional cause of hard disk squeal is not the bearings, but a static
>> discharge brush pressed against the spindle of the drive.  The 'fix' is 
>> usually to just rip it loose.  No one seems to have an adequate explaination
>> why you need/don't need this thing.  This squeal isn't harmful to anything
> 
> You might want to think twice before doing this, and be sure you back up the
> disk real well if you decide to do it. As the disk spins, the action of the
> air passing the platters causes static electricity to build up.

I removed the @@^%@%@^% spring nearly two years ago on a DataFrame 20
and haven't lost one bit since.  I removed it on the advice of a friend
who specializes in disk repair and data recovery from crashed drives.

Question: Why doesn't the platter discharge through the spindle and
bearings to the housing?  Is the platter otherwise insulated from the
chassis of the drive?  I have never taken one of these things apart
to look.

-- 
Raymond Y. Lillard                    FOCUS Semiconductor Systems Inc.
net: (sun!daver!mfgfoc!ray)           570 Maude Court
att: (408) 738-0600                   Sunnyvale, CA 94086  USA