7 Apr
1999
7 Apr
'99
5:28 a.m.
These were in common use on Z89's and Z-90's. Heathkit used drives made
by
Tandon and Siemens. The Siemens drives were kinda unique: It used a
disk with a spiral groove for the head positioner.
The cabinets are among the best floppy enclosures ever made IMHO
(although
they can be a bitch to put back together). I have several of them
myself.
The (linear) power supplies in 'em are fairly beefy.
Jeff
On Wed, 7 Apr 1999 10:35:59 +0000 "Lawrence Walker"
<lwalker(a)mail.interlog.com> writes:
I made a curbside rescue of a dual ext. fdd. Two FH 5
1/4 floppies
mounted
vertically. ZenithDS Heathkit H77 with ribbon cable connector. Looks
more like
an 8" mechanism than your standard floppies. I'm assuming these were
for a
Z-100 guaged by the ZDS H-K label timeframe . Any info on them ?
Judging by the mechanism that I can see , like Rainbow drives but not
laterly opposed , they're SS.
ciao larry
lwalker(a)interlog.com
Collectors info http://members.xoom.com/T3C
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7 Apr
7 Apr
6:22 a.m.
On Wed, 7 Apr 1999, Jeffrey l Kaneko wrote:
These were in common use on Z89's and Z-90's.
Heathkit used drives made
by
Tandon and Siemens. The Siemens drives were kinda unique: It used a
disk with a spiral groove for the head positioner.
Hmmm... hardly that unique it would seem... The Shugart SA-400 series
drives used that same positioning systems (first?).
-jim
---
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The Computer Garage - http://www.rdrop.com/~jimw
Computer Garage Fax - (503) 646-0174
7:48 a.m.
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6:33 a.m.
New subject: OT: Classic Floppy Story
Early clones also used floppies from Daewoo Automated Manufacturying (DAM).
These floppys had DAM in raised relief on the plate across the bottom. When
ever they broke (which was frequently) is was "another DAM floppy failure."
1:56 p.m.
New subject: OT: Classic Floppy Story
I have in front of me the original box for a 5.25" dual disk drive
that was the forerunner of the DEC RK50. (The drive is in my H89.)
The box says:
Another DAM floppy, by T and E Engineering Inc., Another DAM Company.
It looks like they flaunted this DAM stuff all over the place!
Dave
Chuck McManis wrote:
Early clones also used floppies from Daewoo Automated Manufacturying (DAM).
These floppys had DAM in raised relief on the plate across the bottom. When
ever they broke (which was frequently) is was "another DAM floppy failure."
8:14 a.m.
On 7 Apr 99 at 13:28, Jeffrey l Kaneko wrote:
These were in common use on Z89's and Z-90's.
Heathkit used drives made
by
Tandon and Siemens. The Siemens drives were kinda unique: It used a
disk with a spiral groove for the head positioner.
The cabinets are among the best floppy enclosures ever made IMHO
(although
they can be a bitch to put back together). I have several of them
myself.
The (linear) power supplies in 'em are fairly beefy.
Jeff
OK, enough interest that I "bared it". A heavy sucker, 8 screws for stability
and to discourage tinkerers. Meant to last, all metal frame.
The drives are Siemens with controllers on each fd (surprise-not) , SERIOUS
caps on the PSU and 34 pin edge connectors and cable (no twist ) connecting to
the external port.
I'm thinking these drives are blessed enough to use to transfer my TRS m2
8 inchers to 5 1/4. How would I begin ? An old-timer who was into TRS m2
told me he had written a program to do that some time ago and urged me to do so
before the media failed. Of course like most collectors I'm onwards to the
newer find and sometimes don't complete the earlier demands.
What could I hook this up to in order to finish with valor.
Damn, now I've gone and done it .
ciao larry
lwalker(a)interlog.com
Collectors List and info http://members.xoom.com/T3C
9221
days inactive
9221
days old
5 comments
6 participants
participants (6)
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ard＠p850ug1.demon.co.uk -
cmcmanis＠mcmanis.com -
djenner＠halcyon.com -
jeff.kaneko＠juno.com -
jimw＠agora.rdrop.com -
lwalker＠mail.interlog.com