*BSD News Article 42726


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From: miff@apanix.apana.org.au (Michael Smith)
Newsgroups: comp.os.386bsd.misc
Subject: Re: List of recommended hardware components
Date: 21 Feb 1995 17:52:24 GMT
Organization: Apanix Public Access Unix, +61 8 373 5485 (5 lines)
Lines: 28
Message-ID: <3id98o$b4v@tipellium.apana.org.au>
References: <3g890k$cbl@ionews.io.org> <D3Mz2E.Cqr@txnews.amd.com> <D3nryK.2u0@bonkers.taronga.com> <D3up05.K3t@pluto.rain.com> <3i16p4$a2q@mercury.interpath.net>
NNTP-Posting-Host: seldon.apanix.apana.org.au

ctwilson@mercury.interpath.net (Tom Wilson) writes:
>:I take it you have not been bitten by the infamous sticktion problem
>:with the Quantum ProDrive 105S.  Cost Sun and Sun owners a bundle a
>:few years back.

>That was reportedly caused by a bad batch of lubricant...I have yet to
>hear of another serious problem with *any other* Quantum line...
>I ones I own and have owned work/worked great...no complaints about
>the ones in the HP workstation I use, either.

Having pulled several of these drives apart and 'cured' (hah) them, I 
don't think it's a lubricant problem (tho it could be).  Essentially
what happens is that the spindle motor is unable to spin up with the heads
in their resting position.  If you move the resting posiition out a few
millimetres (eg by the judicious application of some heatshrink around 
one of the magnet pillars) the drive becomes useful again.  

Whether this can be explained by 'bad lubricant' is somewhat doubtful,
as the spindle motor's in a better torque position with the heads in
_further_, rather than out...

>|  Tom Wilson                       |  "I can't complain, but sometimes  |

--
# mike smith : miff@apanix.apana.org.au - Silicon grease monkey        #
# "The question 'why are the fundamental laws of nature mathematical'  #
# then invites the trivial response 'because we define as fundamental  #
# those laws which are mathematical'". Paul Davies, _The_Mind_of_God_. #