[rescue] Dumping SunOS tapes
jjhudak at gmail.com
Fri Sep 8 10:58:46 CDT 2017
I forgot to mention that I came across some postings that claim the belts
in the DC6150 were more resistant to aging then the original....something
about a change in the mfg process for the 6xxx series. Belts in those
units might be likely donor candidates....
This issue, in general, is not unique and a lot of postings about solutions
seem to be around...the trick will be to find 'the' way as opposed to the
I'll see if I can find something from the belt suppliers I deal with.
On Fri, Sep 8, 2017 at 11:51 AM, John Hudak <jjhudak at gmail.com> wrote:
> thanks Peter....Ohhhh, QIC cartridges...
> I understood where the belt is but didn't realize that it actually moved
> the tape in the manner described.
> So the issues are belt residue xfer to tape, and belt
> It seems that replacing the belt with a new one is the way to go.
> googling found this helpful video:
> You will also need a new belt. I didn't find any sources of belts
> but...If you contact these ppl you can get a new cartridge and use the belt
> from that.
> Cleaning tape residue.
> the trick is to remove the goo without removing the binder and iron.
> Hopefully the tape was rewound....
> Ive used 70% isopropal alcohol (NOT Ethallcohol) with a Q-tip on the iron
> coated side and NuFinish (yes the car wax) on the non iron coated side.
> I would not even try to read the tapes once...I came across some
> statistics that tapes over 20 yrs old the success rate in using them is
> less than 5%.
> Good luck
> On Fri, Sep 8, 2017 at 11:02 AM, Peter Stokes <peter at ashlyn.co.uk> wrote:
>> Hi John
>> I think you misunderstand where the belt is.
>> The belt is actually inside the tape cartridge and a single capstan wheel
>> against a wheel in the cartridge to move this belt which moves both
>> spools of
>> the tape. The belt, unlike cassette deck belts etc, is very thin, much
>> the tape itself. Each length of tape has varying sizes of belt as the belt
>> runs around the tape spools themselves.
>> If you link to here
>> You will actually see an old Sunos tape cartridge and others.
>> Peter Stokes
>> Ashlyn Computer Services
>> Mbl: 07977 532320
>> On 8 Sep 2017, at 15:56, John Hudak <jjhudak at gmail.com> wrote:
>> > Could you please show me a picture (pointer) of the cartridge + belt you
>> > are talking about?
>> > I do some 'vintage' tape deck restoration and have access to a few belt
>> > suppliers....
>> > If one knows the geometries of the belt, one can try to match it to
>> > existing.
>> > Something doesn't make sense to be tho...someone posted something about
>> > belt being matched to length of tape? I don't see how tape length would
>> > dictate belt geometries, and even if it did, I'd think the economies of
>> > mass production of a single belt would significantly outweigh the cost
>> > producing multiple belts.....
>> > Thanks
>> > J
>> > On Fri, Sep 8, 2017 at 7:50 AM, Richard <ejb at trick-1.net> wrote:
>> >> Hi Folks
>> >> OK so the SS2 is installed 4.1.3_U1 (sans Presto Card) and the Archive
>> >> 150 Tape drive is operational and confirmed not destroying tapes :-).
>> >> I have however checked a couple of tapes and the internal belts have
>> >> degraded/snapped on some (anyone know of a replacement belt?). Others
>> >> are good and I can recover data from tar/dump backups. I have a box of
>> >> about 50 tapes so I should be able to get data off of the original Sun
>> >> tape set, even if it is mix and match. I am however being pessimistic
>> >> and working on the understanding that I will get 1 go per tape with the
>> >> potential for tape breakage or other damage occurring.
>> >> So here is the question.
>> >> What format/tool do people suggest I use to image the tape such that
>> >> others could use the images.
>> >> thank in advance
>> >> Richard
>> >> _______________________________________________
>> >> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
>> > _______________________________________________
>> > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
>> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
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