19 Jan
2005
19 Jan
'05
3:45 a.m.
Is there any difference in the cartridges for
an RK05F drive vs. an RK05J (or plain RK05)?
I just acquired an RK05F and am getting ready
to hook it up to my system along with my RK05J
drives so I can test it out. I know the pack
holds twice as much data as the RK05/RK05J, but
is there any physical difference in the packs?
I suppose I'll have to reconfigure my existing
RK05J drives so that the RK05F is either drives
0/1 or 2/3 (or 4/5).
Thanks,
Ashley
19 Jan
19 Jan
3:56 a.m.
Ashley,
The removable pack is the same for both drives.
The additional data capacity comes from the fact
that the pack is not removed and as such the
alignment is not lost. If I recall correctly,
this allow the drive to double the track density.
--tom
At 12:45 PM 1/19/2005 -0500, Ashley Carder wrote:
Is there any difference in the cartridges for
an RK05F drive vs. an RK05J (or plain RK05)?
I just acquired an RK05F and am getting ready
to hook it up to my system along with my RK05J
drives so I can test it out. I know the pack
holds twice as much data as the RK05/RK05J, but
is there any physical difference in the packs?
I suppose I'll have to reconfigure my existing
RK05J drives so that the RK05F is either drives
0/1 or 2/3 (or 4/5).
Thanks,
Ashley
5:21 a.m.
Tom,
Thanks for the info. I'll take the cover off, do a little
inspection of the pack, heads, foam, etc. and if all
looks well I'll try to fire it up this weekend.
Ashley
Ashley,
The removable pack is the same for both drives.
The additional data capacity comes from the fact
that the pack is not removed and as such the
alignment is not lost. If I recall correctly,
this allow the drive to double the track density.
--tom
At 12:45 PM 1/19/2005 -0500, Ashley Carder wrote:
Is there any difference in the cartridges for
an RK05F drive vs. an RK05J (or plain RK05)?
I just acquired an RK05F and am getting ready
to hook it up to my system along with my RK05J
drives so I can test it out. I know the pack
holds twice as much data as the RK05/RK05J, but
is there any physical difference in the packs?
I suppose I'll have to reconfigure my existing
RK05J drives so that the RK05F is either drives
0/1 or 2/3 (or 4/5).
Thanks,
Ashley
5:59 a.m.
Ashley,
Unless you are trying to recover data from the pack
which is currently in the drive, I would suggest cleaning
the platter and heads, and then if the foam and molded
plastic parts are not disintegrating, run the drive for
an hour or so with the head load disable switch set so
that the heads don't load. This will allow any dust to
be purged before loading the heads...
--tom
At 02:21 PM 1/19/2005 -0500, you wrote:
Tom,
Thanks for the info. I'll take the cover off, do a little
inspection of the pack, heads, foam, etc. and if all
looks well I'll try to fire it up this weekend.
Ashley
> Ashley,
>
> The removable pack is the same for both drives.
> The additional data capacity comes from the fact
> that the pack is not removed and as such the
> alignment is not lost. If I recall correctly,
> this allow the drive to double the track density.
>
> --tom
>
> At 12:45 PM 1/19/2005 -0500, Ashley Carder wrote:
>
> >Is there any difference in the cartridges for
> >an RK05F drive vs. an RK05J (or plain RK05)?
> >I just acquired an RK05F and am getting ready
> >to hook it up to my system along with my RK05J
> >drives so I can test it out. I know the pack
> >holds twice as much data as the RK05/RK05J, but
> >is there any physical difference in the packs?
> >
> >I suppose I'll have to reconfigure my existing
> >RK05J drives so that the RK05F is either drives
> >0/1 or 2/3 (or 4/5).
> >
> >Thanks,
> >Ashley
>
>
10:42 a.m.
Is there any difference in the cartridges for
an RK05F drive vs. an RK05J (or plain RK05)?
I just acquired an RK05F and am getting ready
to hook it up to my system along with my RK05J
drives so I can test it out. I know the pack
holds twice as much data as the RK05/RK05J, but
is there any physical difference in the packs?
Not that I know of. However, if you remove the pack from a -F, you
should do a (low-level) format when you put it back in.
The heads are different of course. Following the normal DEC convention
that blue means 'high desnity', the RK05F heads have blue sockets on the
end of their cables.
-tony
9 May
9 May
8:40 a.m.
New subject: RK05 - PDP8 Media
Hi all,
as I got a PDP8E and an RK05 yesterday I'm looking for ONE media for the
rk05 drive.
Andreas
10 May
10 May
9:12 a.m.
New subject: RK05 - PDP8 Media
On 5/9/05, Andreas Holz <asholz at topinform.de> wrote:
Hi all,
as I got a PDP8E and an RK05 yesterday I'm looking for ONE media for the
rk05 drive.
That's a toughie. It took me years and the kindness of list members
to rectify my lack of 16-sector media. I have wads and wads of
12-sector packs (PDP-11), but that doesn't help.
Since this is a re-occurring question, I might as well launch into the
two methods we've hashed about repeatedly to resolve the lack of
16-sector media... 1) modify the hub of a 12-sector pack to have cuts
at the right places (plug some old ones, cut some new ones), and 2)
build a circuit between the hub sensor and the drive electronics to
read the pulses from a 12-sector pack and emit pulses as if it were a
16-sector pack.
Since I managed to score media before I have had the chance to fire up
my RK8E, I have never had the need to try either of these hacks, but
in principle they should work. Hack 1 would remake a 12-sector pack
into a real 16-sector pack that could be mounted on any drive
anywhere, but requires each pack be modded. Hack 2 would only be
useful for interchance with a similarly modified drive. One advantage
of Hack 2 is that the mod would be easy to make in a completely
reversible fashion, whereas Hack 1 would not be quite so
bi-directional.
One possible compromise between the two would be to locate a crashed
16-sector pack and steal a platter from a 12-sector pack...
Good luck on your search.
-ethan
3:59 p.m.
New subject: RK05 - PDP8 Media
16-sector media... 1) modify the hub of a 12-sector
pack to have cuts
at the right places (plug some old ones, cut some new ones), and 2)
It should be possible to make a new indexing ring for the hub with slots
in the right places. One day I might even have a go. I think I have one
16 secrtor hub, but as luck would have it, it's an alignment disk, so I
am not going to modify it.
One possible compromise between the two would be to
locate a crashed
16-sector pack and steal a platter from a 12-sector pack...
Be warned if you try this (or if you remove the disk from the hub for any
other reason), you'll need a DTI to get it centred again.
-tony
10:16 a.m.
New subject: RK05 - PDP8 Media
Am maandag, 09.05.05, um 17:40 Uhr (Europe/Zurich) schrieb Andreas Holz:
Hi all,
as I got a PDP8E and an RK05 yesterday I'm looking for ONE media for
the rk05 drive.
Andreas
Na dann Gluckwunsch.
Wieviel Core ? Funktionsf?hig ?
Wenn keine andere Reaktionen kommen, kannst Du mich kontaktieren wegen
Rk05 medium.
Bitte sei dir sicher dass das RK05 in ordnung ist (NiCd pack usw)
bevor ein Medium rein kommt, die Media sind wirkliche Mangelware.
Nachteil : ich verkaufe nicht, tausche nur mit anderen Classicmp
Sachen.
Wo : Zurich CH
mfg Jos Dreesen
6930
days inactive
7041
days old
8 comments
6 participants
participants (6)
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ard＠p850ug1.demon.co.uk -
asholz＠topinform.de -
ethan.dicks＠gmail.com -
jos.mar＠bluewin.ch -
uban＠ubanproductions.com -
wacarder＠usit.net