7 Feb
2017
7 Feb
'17
4:54 a.m.
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
-tony
7 Feb
7 Feb
11:16 a.m.
On Tue, Feb 7, 2017 at 9:54 AM, Tony Duell <ard.p850ug1 at gmail.com> wrote:
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
Better than Coronation Street Omnibus, that's for sure.
--
-Jon
+44 7465 605833
1:22 p.m.
On 07.02.2017 10:54, Tony Duell wrote:
No, not Transport For London routes 246, 320, 464, R2
or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
-tony
Now there is a nice P850 !
Jos
1:54 p.m.
On Tue, Feb 7, 2017 at 6:22 PM, jos <jos.dreesen at greenmail.ch> wrote:
On 07.02.2017 10:54, Tony Duell wrote:
Is there any other sort :-)
A few other machines crept into the photos. An RK07, the P850 (with Trend Paper
Tape Station), a VAX11/730, Acorn System, a Creed 7E and Creed 444 teleprinters,
Versatec V80 electrostatic printer, etc.
-tony
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
-tony
Now there is a nice P850 ! 
1:32 p.m.
On Feb 7, 2017, at 4:54 AM, Tony Duell <ard.p850ug1
at gmail.com> wrote:
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
Wow. Disassembling and rebuilding motors... not so crazy if it's a fan motor but then
a bit later I see you took DECtape reel servos apart. And I haven't seen someone take
apart and rebuild a contactor before.
Nice photos, indeed.
paul
1:42 p.m.
Wow. Disassembling and rebuilding motors... not so
crazy if it's a fan moto$
If I had to pick anyone as someone capable of it, though....
/~\ The ASCII Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents-montreal.org
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
1:49 p.m.
On Tue, Feb 7, 2017 at 6:42 PM, Mouse <mouse at rodents-montreal.org> wrote:
I learnt something very important about 40 years ago. And that is not to be
afraid to try something because you might not be able to do it. And heck, motors
are not complicated really. I have an HP9125 plotter (for the 9100
calcualtor), when
I got it, both motors had open-circuit windings. I rewound them. It
took me a couple
of tries, but there was no alternative.
-tony
Wow.
Disassembling and rebuilding motors... not so crazy if it's a fan moto$
If I had to pick anyone as someone capable of it, though....
1:46 p.m.
On Tue, Feb 7, 2017 at 6:32 PM, Paul Koning <paulkoning at comcast.net> wrote:
I'll dismantle (and often reassemble ;-)) just about anything.
As for motors, I had to strip the punch motor in the PC04 today. I
fitted the step-down
transformer so I could run said unit, then found the motor was solid.
The bearing oil
had turned to something rembling tar. I will try to get photos of that
uploaded soon.
The only motors I am a bit careful with dismantling are permanent
magnet DC ones.
The field can demagnetise if you don't fit a 'keeper'. But I will do
those when I have to.
See the photos in my VAX11/730 album on the same site for the insides
of the TS05
motor.
As for the cabinet fan, the old bearings were rusted solid, but the
windings were
perfect, and a pair of ball races are a lot cheaper than the entire
fan. Strangly
said bearings were metric dimensions (which made them easier to get for me).
-tony
On Feb 7, 2017, at 4:54 AM, Tony Duell
<ard.p850ug1 at gmail.com> wrote:
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
Wow. Disassembling and rebuilding motors... not so crazy if it's a fan motor but
then
a bit later I see you took DECtape reel servos apart. And I haven't seen someone
take apart and rebuild a contactor before.
Nice photos, indeed.
paul
1:52 p.m.
On Feb 7, 2017, at 1:46 PM, Tony Duell <ard.p850ug1
at gmail.com> wrote:
On Tue, Feb 7, 2017 at 6:32 PM, Paul Koning <paulkoning at comcast.net> wrote:
I'll dismantle (and often reassemble ;-)) just about anything.
...
The only motors I am a bit careful with dismantling are permanent
magnet DC ones.
I still remember the DEC field service tech repairing an RC11/RS64 fixed head disk drive
with a bad motor. He disassembled the drive to take out the spindle motor (which is also
the platter spindle), sent it off to Appleton Electric Motors for new bearings, then put
it all back together. Worked just fine, didn't even lose any data.
Clearly you're working at that level, which even by the standards of 1974 professional
computer technicians is right at the top of the field.
paul
On Feb 7, 2017, at 4:54 AM, Tony Duell
<ard.p850ug1 at gmail.com> wrote:
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
Wow. Disassembling and rebuilding motors...
2:22 p.m.
I still remember the DEC field service tech repairing
an RC11/RS64 fixed head disk
drive with a bad motor. He disassembled the drive to take out the spindle motor
(which is also the platter spindle), sent it off to Appleton Electric Motors for new
bearings, then put it all back together. Worked just fine, didn't even lose any
data.
I think I'd be the one who strips the motor, pulls off the old
bearings and presses on
the replacements.
Clearly you're working at that level, which even by the standards of 1974
professional
computer technicians is right at the top of the field.
But I've not learnt to swap oiut the alternator when I can't find the
tyre that is flat yet...
-tony
2:52 p.m.
On 2017-02-07 2:46 PM, Tony Duell wrote:
On Tue, Feb 7, 2017 at 6:32 PM, Paul Koning
<paulkoning at comcast.net> wrote:
I'll dismantle (and often
reassemble ;-)) just about anything.
As for motors, I had to strip the punch motor in the PC04 today. I
fitted the step-down
transformer so I could run said unit, then found the motor was solid.
The bearing oil
had turned to something rembling tar. I will try to get photos of that
uploaded soon.
I have seen that happen to running motors that have sintered bronze
bearings. On some old systems I serviced that had 8" diskette drives
turned by an AC motor that ran all the time the system was powered on,
customers rarely used the diskette drive, but we had to in order to run
diagnostics on the system. We would often find the motor seized solid
and hot enough to fry eggs on. We would of course replace the motor,
but while I waited for the replacement, I would take out the motor pump
a little oil into the bearing, and turn the motor with vice grips. The
oil would dissolve that black gunk and you could get the motor going
again and get on with the job while waiting for parts. I usually found
that once that gunk was cleaned out the bearing had some play in them.
Paul.
On Feb 7,
2017, at 4:54 AM, Tony Duell <ard.p850ug1 at gmail.com> wrote:
No, not Transport For London routes 246, 320, 464, R2 or R8 :-)
Some of you might like the photos here ...
https://www.flickr.com/photos/tony_duell/albums/72157677925921112
Wow.
Disassembling and rebuilding motors... not so crazy if it's a fan motor but then
a bit later I see you took DECtape reel servos apart. And I haven't seen someone
take apart and rebuild a contactor before. 
5:25 p.m.
On Tue, Feb 7, 2017 at 1:46 PM, Tony Duell <ard.p850ug1 at gmail.com> wrote:
As for motors, I had to strip the punch motor in the
PC04 today...
...the motor was solid. The bearing oil had turned to something rembling tar.
I recently did that with a Model 19 Teletype motor. The goo wasn't as
black as tar, but I would call it something between "caramel" and
"treacle".
Bit of cleaning, bit of manipulation, and a bit of new oil and the
motor spins smooth as silk.
-ethan
2683
days inactive
2683
days old
11 comments
7 participants
participants (7)
-
ard.p850ug1＠gmail.com -
ethan.dicks＠gmail.com -
jon＠jonworld.com -
jos.dreesen＠greenmail.ch -
mouse＠Rodents-Montreal.ORG -
paulkoning＠comcast.net -
phb.hfx＠gmail.com