3 May
2014
3 May
'14
12:34 p.m.
Hi! I'm looking for a shugart 851 8" floppy drive for my Wang 2200 system!
Preferable 110v 50Hz, but all versions of interest(110-220v, 50-60Hz) or/and parts to
change to correct version! A fixer or one in good condition!Best regardsKenny Ottosson
3 May
3 May
12:58 p.m.
On 05/03/2014 12:34 PM, Kenny wrote:
Hi! I'm looking for a shugart 851 8" floppy
drive for my Wang 2200
system! Preferable 110v 50Hz, but all versions of interest(110-220v,
50-60Hz) or/and parts to change to correct version! A fixer or one in
good condition!Best regardsKenny Ottosson
Just curious--where is 110V 50Hz a common power distribution?
--Chuck
1:19 p.m.
Hi! Not so common! I'm in Sweden and the mains is 220v/50Hz but it has a stepdown
transformer! Original it has been 110v/50Hz, but of course 220v just fine too! But for the
right speed it's important it has the right size wheels, which differ between 50Hz and
60Hz!Kenny
On 05/03/2014 12:34 PM, Kenny wrote:
Hi! I'm looking for a shugart 851 8"
floppy drive for my Wang 2200
system! Preferable 110v 50Hz, but all versions of interest(110-220v,
50-60Hz) or/and parts to change to correct version! A fixer or one in
good condition!Best regardsKenny Ottosson
Just curious--where is 110V 50Hz a common power distribution?
--Chuck
1:46 p.m.
Actually; It's not really a stepdown transformer, it has a middle point on the
primary in the transformer to drive 110v equipment! Like the drives and the fans! I think
it's common solution here for american products, you can still use some 110v stuff
inside the machine so long it can handle 50Hz instead of 60Hz!Kenny
From: ottosson_55 at hotmail.com
To: cctalk at classiccmp.org
Subject: RE: Wanted: Shugart 851 floppy drive
Date: Sat, 3 May 2014 20:19:34 +0000
Hi! Not so common! I'm in Sweden and the mains is 220v/50Hz but it has a stepdown
transformer! Original it has been 110v/50Hz, but of course 220v just fine too! But for the
right speed it's important it has the right size wheels, which differ between 50Hz and
60Hz!Kenny
On 05/03/2014 12:34 PM, Kenny wrote:
Hi! I'm looking for a shugart 851 8"
floppy drive for my Wang 2200
system! Preferable 110v 50Hz, but all versions of interest(110-220v,
50-60Hz) or/and parts to change to correct version! A fixer or one in
good condition!Best regardsKenny Ottosson
Just curious--where is 110V 50Hz a common power distribution?
--Chuck
2:16 p.m.
On 05/03/2014 01:46 PM, Kenny wrote:
Actually; It's not really a stepdown transformer,
it has a middle
point on the primary in the transformer to drive 110v equipment! Like
the drives and the fans! I think it's common solution here for
american products, you can still use some 110v stuff inside the
machine so long it can handle 50Hz instead of 60Hz!Kenny
Okay, an autotransformer then. Not much different, except that you do
sacrifice line isolation. Dual primary transformers that can be
configured as 120/240V used to be very common, but that doesn't help
your frequency issue.
I have an old Panasonic laser printer that *was* a 220V unit with a
rather large step-up transformer added by Matsushita for North American
(and probably Japanese) operation. The PSU is linear with its own
transformer.
--Chuck
4 May
4 May
12:41 p.m.
Actually; It's not really a stepdown transformer, it has a middle point on=
the primary in the transformer to drive 110v equipment! Like the drives an=
The terminology may vary across the Pond, but over here that would be
called a 'step down autotransformer'. An autotransformer is one with a
signle winding, suitably tapped, and thus provides no isolation between
input and output.
-tony
3 May
3 May
2:11 p.m.
On 05/03/2014 01:19 PM, Kenny wrote:
Hi! Not so common! I'm in Sweden and the mains is
220v/50Hz but it
has a stepdown transformer! Original it has been 110v/50Hz, but of
course 220v just fine too! But for the right speed it's important it
has the right size wheels, which differ between 50Hz and 60Hz!Kenny
I was curious because I wasn't aware of 50Hz 110B being a common mains
distribution.
I've taken 220V 50Hz drives and run them on 230V, 60Hz and simply
replaced the motor drive pulley with one of a smaller diameter and the
result worked just fine.
--Chuck
1:54 p.m.
On 05/03/2014 12:34 PM, Kenny wrote:
ALmost nowhere, but 110V (115V, 120V) 50Hz 8" floppy drives are quite
common in the UK. Many of my machiens use them
The point is that the spindle motor will run off 50Hz or 60Hz, it's jsut
the speed that differs. So if you take the (common US) 110V 60Hz drive
and change the pulley/belt it will run off 50hz mains stepped down to
110V. That stepping down can be done using the primary of the mains
tranformer an an autotransformer. Often the mains transformer has a pair
of 110V primray windings. The disk motor is in parallel with one, the
(110V AC) cooling fnas in paralell with the other. Or if there are 2
dirves, one motor may be in parallel with each winding. For US mains, the
whole lot gois in paralell across the mains. For European mains, the 2
windings are in series, they then form an autotransformer to give 110V or
so to the drive motors and fans.
This in turn means that the conversion kit between Europe and the US
consists of the small pulleys and belts, not the spindle motors too.
-tony
Hi! I'm looking for a shugart 851 8"
floppy drive for my Wang 2200
system! Preferable 110v 50Hz, but all versions of interest(110-220v,
50-60Hz) or/and parts to change to correct version! A fixer or one in
good condition!Best regardsKenny Ottosson
Just curious--where is 110V 50Hz a common power distribution?
2:16 p.m.
Very well explained!?
Kenny
From: ard at p850ug1.demon.co.uk
Subject: Re: Wanted: Shugart 851 floppy drive
To: cctalk at classiccmp.org
Date: Sat, 3 May 2014 21:54:24 +0100
On 05/03/2014 12:34 PM, Kenny wrote:
ALmost nowhere, but 110V (115V, 120V) 50Hz 8" floppy drives are quite
common in the UK. Many of my machiens use them
The point is that the spindle motor will run off 50Hz or 60Hz, it's jsut
the speed that differs. So if you take the (common US) 110V 60Hz drive
and change the pulley/belt it will run off 50hz mains stepped down to
110V. That stepping down can be done using the primary of the mains
tranformer an an autotransformer. Often the mains transformer has a pair
of 110V primray windings. The disk motor is in parallel with one, the
(110V AC) cooling fnas in paralell with the other. Or if there are 2
dirves, one motor may be in parallel with each winding. For US mains, the
whole lot gois in paralell across the mains. For European mains, the 2
windings are in series, they then form an autotransformer to give 110V or
so to the drive motors and fans.
This in turn means that the conversion kit between Europe and the US
consists of the small pulleys and belts, not the spindle motors too.
-tony Hi! I'm looking for a shugart 851 8"
floppy drive for my Wang 2200
system! Preferable 110v 50Hz, but all versions of interest(110-220v,
50-60Hz) or/and parts to change to correct version! A fixer or one in
good condition!Best regardsKenny Ottosson
Just curious--where is 110V 50Hz a common power distribution? 
2:18 p.m.
>
> On 05/03/2014 12:34 PM, Kenny wrote:
>> Hi! I'm looking for a shugart 851 8" floppy drive for my Wang 2200
>> system! Preferable 110v 50Hz, but all versions of interest(110-220v,
>> 50-60Hz) or/and parts to change to correct version! A fixer or one in
>> good condition!Best regardsKenny Ottosson
>>
>
> Just curious--where is 110V 50Hz a common power distribution?
Wikipedia has a map (see ?Utility frequency?). It?s used in half of Japan ? the other
half uses 110V 60Hz.
paul
5:11 p.m.
On 05/03/2014 02:18 PM, Paul Koning wrote:
Wikipedia has a map (see ?Utility frequency?). It?s
used in half of Japan ? the other half uses 110V 60Hz.
Has Japan upgraded? I've got some old Japanese kit of which the name
plate clearly says "100V 60Hz" I seem to remember that the lower
distribution voltage was a trap for American ex-pats who'd bring over
refrigerators and the like. Much shorter motor life under lower voltage.
I'm in fine fettle--my line voltage monitor says I'm running at 127V
right now.
FWIW, I didn't bother grinding down the original crowned pulley on the
8" drive to accommodate 60Hz--I rummaged around at Halted and found a
flanged timing pulley with exactly the right diameter. It's still
working to this day, some 26 years later. I disassembled an old
open-frame Power One linear supply, mounted the transformer and PCBs in
the drive enclosure (from Jade) on standoffs and connected only one of
the dual primaries to the AC supply--the other was hooked in series with
the first, used to drive the 220 V motor.
I got the drive NIB for, IIRC, $5, as Halted didn't think there'd be a
market for an oddball drive like that.
The good old days, when you could actually scrounge something useful
from the electronics junk shops in the Bay Area.
--Chuck
3:46 p.m.
This in turn means that the conversion kit between
Europe and the US
consists of the small pulleys and belts, not the spindle motors too.
FWIW if somebody really wishes their 60 Hz Shugart 850/851 were a 50 Hz one instead, I
have a 50 Hz one that I would prefer to be 60 Hz. I'd love to discuss swapping pulleys
and belts.
ok
bear.
--
until further notice
4:10 p.m.
In my younger days, a friend and I put together a Intel Series II
from parts.
We were able to get a 801 but it was
a 50Hz / 220VAC.
We needed 60Hz.
We ground the motor pulley down with a file while spinning
and increase the slot of the motor mount with a rat tail file.
We used a surplus power transformer for an Intel u'Scope
( likely the 8080 one ) as an auto transformer, as Tony
suggests. It worked fine. We never did get all the plastic covers
but we had both ISIS and CP/M running on it. We just had to remind
people to stay way from the HV lead.
Dwight
Subject: Re: Wanted: Shugart 851 floppy drive
From: bear at typewritten.org
Date: Sat, 3 May 2014 15:46:41 -0700
To: cctech at classiccmp.org
This in turn means that the conversion kit
between Europe and the US
consists of the small pulleys and belts, not the spindle motors too.
FWIW if somebody really wishes their 60 Hz Shugart 850/851 were a 50 Hz one instead, I
have a 50 Hz one that I would prefer to be 60 Hz. I'd love to discuss swapping pulleys
and belts.
ok
bear.
--
until further notice
5 May
5 May
5:02 p.m.
At 05:46 PM 5/3/2014, you wrote:
I sure wish someone would buy my Shugart 801 (60 Hz / 115 V)
-T
629 . [Alcohol] All right, brain, I don't like
you and you don't like me - so let's just do this
and I'll get back to killing you with beer. --Homer Simpson
a50mhzham at gmail.com ? N9QQB (amateur radio)
"HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK
43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square
EN53wc
LAN/Telecom Analyst ? Open-source Dude ? Musician
? Registered Linux User 385531
This in turn
means that the conversion kit between Europe and the US
consists of the small pulleys and belts, not the spindle motors too.
FWIW if somebody really wishes their 60 Hz
Shugart 850/851 were a 50 Hz one instead, I have
a 50 Hz one that I would prefer to be 60 Hz. I'd
love to discuss swapping pulleys and belts. 
6 May
6 May
3:14 a.m.
I haven't been following this thread, so don't flame me..
But there's a pair of 801 here, as well.
On Mon, May 5, 2014 at 7:02 PM, Tom <a50mhzham at gmail.com> wrote:
At 05:46 PM 5/3/2014, you wrote:
This in turn means that the conversion kit
between Europe and the US
I sure wish someone would buy my Shugart 801 (60 Hz / 115 V)
-T
629 . [Alcohol] All right, brain, I don't like you and you don't like me -
so let's just do this and I'll get back to killing you with beer. --Homer
Simpson
a50mhzham at gmail.com ? N9QQB (amateur radio)
"HEY YOU" (loud shouting) ? Second Tops (Set Dancing) ? FIND ME ON FACEBOOK
43? 7' 17.2" N by 88? 6' 28.9" W ? Elevation 815' ? Grid Square
EN53wc
LAN/Telecom Analyst ? Open-source Dude ? Musician ? Registered Linux User
385531
consists of the small pulleys and belts, not the
spindle motors too.
FWIW if somebody really wishes their 60 Hz Shugart 850/851 were a 50 Hz
one instead, I have a 50 Hz one that I would prefer to be 60 Hz. I'd love
to discuss swapping pulleys and belts.
3656
days inactive
3659
days old
14 comments
8 participants
participants (8)
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a50mhzham＠gmail.com -
ard＠p850ug1.demon.co.uk -
bear＠typewritten.org -
cclist＠sydex.com -
dkelvey＠hotmail.com -
drlegendre＠gmail.com -
ottosson_55＠hotmail.com -
paulkoning＠comcast.net