I saw these browsing around eBay today. IIRC, these are used on
most of the S100 floppy controllers, are they not? I don't know how a
good a deal this is, or the availablity though other channels, but
thought I'd pass them on.
<URL:
http://cgi.ebay.com/BRAND-NEW-WESTERN-DIGITAL-ICS_W0QQitemZ7537549267 >
>From: "Sridhar Ayengar" <ploopster at gmail.com>
>
>der Mouse wrote:
>> I have a disk drive - a (relatively) modern sealed unit - which appears
>> to have mechanical trouble. The noise it makes spinning up says to my
>> ear "bearing friction".
>>
>> I'm considering taking it apart and lubing the bearing. Of course,
>> this would at best be a temporary fix, since it is on its way out at
>> this point; this is more to gain experience on a throwaway device than
>> to actually recover the drive. (All the bits from it are safe; live
>> mirroring is great for that.)
>>
>> Any tips from the collective wisdom? Obviously, I want to do this in
>> as close to a cleanroom as I can reasonably find, and have the platter
>> assembly open as short a time as I can. But I don't, for example, have
>> any idea what would be a suitable lubricant to use - assuming the
>> bearing isn't a totally sealed assembly itself....
>>
>> ObOTness thread: the disk itself may be formally on-topic; it's
>> certainly close to - it is stamped "MAR 31 1996".
>
>I've done it before, but I find it's not usually worth it, unless you
>can't access data on the drive, and you really need that data. I'd say
>if that drive is still working, find an identical drive and dd the data
>over.
>
>The drive is nowhere near as valuable as the data, at least for newish
>drives.
>
>Peace... Sridhar
>
Hi
It sounds like a fun project. Don't expect to get good results
but consider it as an experiment in how to analyze a drive failure.
One problem you may find is that in order to get to the bearing,
you'll need to unmount the disk platters. It will be almost
impossible to get these mounted in the same concentric location
as they came out from. Also, note that rotating the disk surface,
even a little backwards while the heads are in contact will
most likely destroy the surface.
One last thing is that you may need to make some special spanners
to undo some of the fasteners.
You can make a clean work area by getting some plastic sheeting, a
small blower and a HEPA filter from a vacuum cleaner. Wipe the
inside and the outside of the plastic sheet with a 10:1 diluted
mixture of liquid dish soap and water. Let this dry. This
stops most all of the static that would hold or transfer
dust on the plastic sheet. Try to get some clear plastic
so you can see but a small piece of glass should work.
The bearing will be sealed but if you can access it from
the motor side, you can get some lubricant by lifting the
seal. Remember, you can't rotate the disk while the heads
are on the surface. You'll need to make a comb like tool
to lift them off while banging and digging on things.
Hope this doesn't scare you. I do wish to hear what results
you have. Also any observations you have while disassembling.
The brand and type of drive are also of interest here.
Dwight
Anyone have a QBUS ComDesign 4-port card?
A friend used to work there and was waxing poetic the other day and
claimed he'd like to have one. I thought I'd ask here...
-brad
Bill:
It seems that I'm having problems reaching you through email. I
receive your messages and reply but it seems you are not receiving all of
the replies. I just sent you a test email from an alternative email account
-- please let me know if you receive it from MSN.
Thanks.
Rich
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
/************************************************************/
Have way too many toys, so I am cleaning stuff out. I just recently
upgraded my rackmount to a 3.06Ghz Single Board Computer and hence cleaning
out some PICMG/SBC based stuff. In the next several days, I will be posting
some more PICMG-based computers on ebay, but for now, here is a Celeron
466MHz-based Radisys EPC-2221 on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6796091207&sspagename=ADM
E:B:AAQ:US:1#ebayphotohosting
Cheers,
Ram
I need the schematics for the RX11 Unibus module, M7846. I looked in all
the obvious places without success.
Anybody have a copy or know where to find one?
-chuck
Hi,
i got an ISA card, that includes a MC68000-16, 4 ATT 3030-100 chips, 4 MByte Ram and
connectors labeled SCSI and Floppy Drive/Floppy Controller ...
... it was manufactured 1990/91 by Hydra Systems. Google revealed, that this could be
a "Andor One"/"Hydra One". Does anyone have some more information, and maybe the
software required to operate that card ?
Thanks alot
Bernd
Hi all
>You're thinking about the U.S. Navy? I heard from them a few years
>ago when they realized that FDDI was dead, dead, dead, and they had to
>look for alternatives, because new FDDI hardware could no longer be
>obtained anywhere.
http://www.ccii.co.za
[and for those of you who don't want to open a browser to find out
what I'm on about, CCII Systems are as far as I know the only people
still making FDDI adapters (primarily in PMC form-factor) and we
(yea, I work here :-) plan on making them for a while still...]
W
