Re: how to.inspect.motor?
I wondered if the little machine shop could get you a new holder as it looks like one could pull off the melted holder and just press on a replacement.
|
The mini lathe will be still around .
Before the disastrous the earth temperature was 140°F and the oxygen was above 30%.
We had real big bugs
We just need to have better AC then for the hobby shop to run the mini lathe
Dave?
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Show quoted text
On Sun, Jul 7, 2024 at 07:58 PM, Gerald Feldman wrote:
I should hope not.? Not only would we burn ourselves using our lathes in that kind of heat, but our perspiration dripping on the machines would create a lot of rust.? ?Besides, if temperatures on earth were to increase to 80°C (176°F) , the only organism that might still able to reproduce at that temperature would be Staphylothermus marinus (which is the archaebacterium that lives off of volcanic gasses emitted from deep oceanic trenches).? All other living things would die off and wouldn’t be able to return.
?
Jerry F.? ?????
?
?
Yes, You are correct. ?The best you can expect with forced air cooling is to cool the part to ambient temperature. ? You can of course, never get there, no matter how big the fan. ? ?
But again the parts are spec’d for 80C and even in another 50 years it will likely never get to 80C on Earth. ?
?
On Jul 7, 2024, at 4:27?PM, davesmith1800 via groups.io <davesmith1@...> wrote:
?
40°C is 104°F?
Try living where the temperature is in normal will 110°F 43.3°C?
Cooling becomes a big problem?
Dave?
On Sun, Jul 7, 2024 at 11:03 AM, Chris Albertson wrote:
?
?
On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature.
With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return
The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less.
?
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky=[email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
?
Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all),
so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container,
keeping the conditioned space more resistant to outside temperatures, not immune.?
What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
Sorry for your heat, was 101 here in Atlanta for 1 day
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote:
I was wondering why fleeling Hot?
Check tv . No one is letting run my mini lathe.
Error! Filename not specified.
Attachments:
?
|
I should hope not.? Not only would we burn ourselves using our lathes in that kind of heat, but our perspiration dripping on the machines would create a lot of rust.? ?Besides, if temperatures on earth were to increase to 80°C (176°F) , the only organism that might still able to reproduce at that temperature would be Staphylothermus marinus (which is the archaebacterium that lives off of volcanic gasses emitted from deep oceanic trenches).? All other living things would die off and wouldn’t be able to return. ? Jerry F.? ????? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Chris Albertson
Sent: Sunday, July 07, 2024 5:32 PM
To: [email protected]
Subject: Re: [7x12MiniLathe] OT Hot Hot Hot? Yes, You are correct. ?The best you can expect with forced air cooling is to cool the part to ambient temperature. ? You can of course, never get there, no matter how big the fan. ? ? But again the parts are spec’d for 80C and even in another 50 years it will likely never get to 80C on Earth. ? ?
On Jul 7, 2024, at 4:27?PM, davesmith1800 via groups.io <davesmith1@...> wrote: ? 40°C is 104°F?
Try living where the temperature is in normal will 110°F 43.3°C?
Cooling becomes a big problem?
Dave?
On Sun, Jul 7, 2024 at 11:03 AM, Chris Albertson wrote: ? ? On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote: Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature. With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less. ? On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky=[email protected]> wrote: And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in ? Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all), so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container, keeping the conditioned space more resistant to outside temperatures, not immune.? What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.? Windows will never equal walls in insulation value.... Sorry for your heat, was 101 here in Atlanta for 1 day On 7/6/2024 9:53 PM, davesmith1800 wrote: When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote: Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113. On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote: I was wondering why fleeling Hot?
Check tv . No one is letting run my mini lathe.
Error! Filename not specified.
Attachments: ?
|
Here a photo from past.? If look under motor you see a opening . The set motor to bring in cool air. The only problem is low speed work.? Dave 
On Sat, Jul 6, 2024 at 11:30 PM, Miket_NYC wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
?
Mike Taglieri?
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
?
ralphie
Dave,?
Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all),
so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container,
keeping the conditioned space more resistant to outside temperatures, not immune.?
What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
?
Sorry for your heat, was 101 here in Atlanta for 1 day
?
Stay safe!
?
?
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why fleeling Hot? Check tv . No one is letting run my mini lathe. ![]()
?
?
?
|
Yes, You are correct. ?The best you can expect with forced air cooling is to cool the part to ambient temperature. ? You can of course, never get there, no matter how big the fan. ? ?
But again the parts are spec’d for 80C and even in another 50 years it will likely never get to 80C on Earth. ?
toggle quoted message
Show quoted text
On Jul 7, 2024, at 4:27?PM, davesmith1800 via groups.io <davesmith1@...> wrote:
40°C is 104°F? Try living where the temperature is in normal will 110°F 43.3°C? Cooling becomes a big problem? Dave? On Sun, Jul 7, 2024 at 11:03 AM, Chris Albertson wrote:
On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
?
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature.
?
With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return
?
The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom. ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less.
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
?
ralphie
Dave,?
Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all),
so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container,
keeping the conditioned space more resistant to outside temperatures, not immune.?
What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
?
Sorry for your heat, was 101 here in Atlanta for 1 day
?
Stay safe!
?
?
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why fleeling Hot?
Check tv . No one is letting run my mini lathe.
?
?
?
?
?
Attachments:
|
40°C is 104°F?
Try living where the temperature is in normal will 110°F 43.3°C?
Cooling becomes a big problem?
Dave?
toggle quoted message
Show quoted text
On Sun, Jul 7, 2024 at 11:03 AM, Chris Albertson wrote:
On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
?
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature.
?
With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return
?
The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom. ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less.
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
?
ralphie
Dave,?
Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all),
so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container,
keeping the conditioned space more resistant to outside temperatures, not immune.?
What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
?
Sorry for your heat, was 101 here in Atlanta for 1 day
?
Stay safe!
?
?
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why fleeling Hot? Check tv . No one is letting run my mini lathe. ![]()
?
?
?
?
?
Attachments:
|
On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature.
With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return
The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom. ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less. On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote: And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat
permeation/infiltration, It simply slows it down, (13 times or 30
times no insulation at all),
so that a smaller cooling source, or
heating source in winter, can more easily maintain a temperature
inside the insulated container,
keeping the conditioned space more
resistant to outside temperatures, not immune.?
What kind of windows do you have?
Windows are very energy inefficient, no matter what they say about
them.?
Windows will never equal walls in
insulation value....
Sorry for your heat, was 101 here in
Atlanta for 1 day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800
wrote:
When into my hobby shop and was 114° it insulated R13 walls
ceiling R30.?
My wife and doctor does want working hot weather so put some of my
projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still
hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT,
davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why
fleeling Hot?
Check tv . No one is letting run my mini lathe.
Attachments:
|
Harbor Freight does it on their 44991
Mini Mill, + a small fan as well
On 7/7/2024 2:30 AM, Miket_NYC wrote:
toggle quoted message
Show quoted text
Speaking?of heat, some of you might be interested
in a modification I made to my minilathe about 15?years ago. To
keep the electronics from overheating, I drilled holes in the
cover with screening on the inside so no swarf would get in. I
have no idea whether this helped or not,? but it can't hurt.
Mike Taglieri?
On Sun, Jul 7, 2024, 1:07 AM
Ralph Lehotsky via
<ralphlehotsky= [email protected]>
wrote:
And once
the inside gets hot, it takes longer to cool it down, as
the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat
permeation/infiltration, It simply slows it down, (13
times or 30 times no insulation at all),
so that a smaller cooling source, or heating source
in winter, can more easily maintain a temperature
inside the insulated container,
keeping the conditioned space more resistant to
outside temperatures, not immune.?
What kind of windows do you have? Windows are very
energy inefficient, no matter what they say about
them.?
Windows will never equal walls in insulation
value....
Sorry for your heat, was 101 here in Atlanta for 1
day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was
114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so
put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@...
wrote:
?
Yea, just a few degree cooler here in
visalia. But still hot enough to melt things.
Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM
PDT, davesmith1800 <davesmith1@...>
wrote: ?
?
I
was wondering why fleeling Hot?
Check tv . No one is letting run my mini
lathe.
Attachments:
|
It will take longer if no helper is
present, it takes just as long for the heat or cold to permeate in
either direction, an A/C or heater will go as fast as it ever
did...
5000 BTUs window A/C or 1000W Space
Heater...
On 7/7/2024 1:06 AM, Ralph Lehotsky
wrote:
toggle quoted message
Show quoted text
And
once the inside gets hot, it takes longer to cool it down, as
the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat permeation/infiltration,
It simply slows it down, (13 times or 30 times no
insulation at all),
so that a smaller cooling source, or heating source in
winter, can more easily maintain a temperature inside the
insulated container,
keeping the conditioned space more resistant to outside
temperatures, not immune.?
What kind of windows do you have? Windows are very
energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
Sorry for your heat, was 101 here in Atlanta for 1 day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was
114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put
some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@...
wrote:
?
Yea, just a few degree cooler here in visalia.
But still hot enough to melt things. Sunday will be
113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT,
davesmith1800 <davesmith1@...>
wrote: ?
?
I was wondering why
fleeling Hot?
Check tv . No one is letting run my mini
lathe.
|
On my lathe The bottom is open by? design by manufacturer.? As long the chip do not jump high it will work . My lathe is a 2023 model maybe they working on over heating .?
It is to hot for photo
Dave?
toggle quoted message
Show quoted text
On Sat, Jul 6, 2024 at 11:30 PM, Miket_NYC wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
?
Mike Taglieri?
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
?
ralphie
Dave,?
Insulation DOES NOT STOP heat permeation/infiltration, It simply slows it down, (13 times or 30 times no insulation at all),
so that a smaller cooling source, or heating source in winter, can more easily maintain a temperature inside the insulated container,
keeping the conditioned space more resistant to outside temperatures, not immune.?
What kind of windows do you have? Windows are very energy inefficient, no matter what they say about them.?
Windows will never equal walls in insulation value....
?
Sorry for your heat, was 101 here in Atlanta for 1 day
?
Stay safe!
?
?
On 7/6/2024 9:53 PM, davesmith1800 wrote:
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why fleeling Hot? Check tv . No one is letting run my mini lathe. ![]()
?
?
?
|
Re: how to.inspect.motor?
Here is one!
not mine
Good Luck to any bidders!
On 7/2/2024 11:32 PM, mike allen wrote:
toggle quoted message
Show quoted text
I have another armature lathe , that I bought 20=30 years back
. Had no idea what it was , I have a weakness for things that
seem bitchin & much to my wife's dismay I have way to many .
It has a short piece of hacksaw blade mounted for cleaning out
the slots . After kicking it around for a bunch of years I
bought the one I posted earlier & When I did a Ebay search
to see what the Tru-Arc armature lathes were going for low &
behold there was a guy selling the twin to the old bitchin one ,
let me see if I can find a link to that one . It's nowhere as
fancy as the Tru-arc .
animal
One can also take a hacksaw blade and use that to clean
out the insulation. Some may require a bit of modifying to
fit properly.
george
On Monday, July 1, 2024 at 10:42:04 PM PDT, mike
allen <animal@...>
wrote:
??? Mine is identical to the one I linked . I've
seen them on ebay & at some flea markets . the
motor has that long skinny shaft with a little
star washer kinda lookin cutter that cleans out
the grooves on the communicator .? Let me see if I
can find a longer youtube on it . Mine is over at
a bud's place , We were thinkin on doing some
automotive alternator windmills , but life got in
the way . I installed some new power in our local
NAPA auto parts for their new alternator tester?
when he said gimme a bill I told him I wanted the
old tester , we were gearing up & then .....
Here's a pretty good tube on one , these folks
have a couple of the l'll buggers .
Ebay has a couple but their pretty darn proud of
them .
this ones pretty good , Lost Creek Machine had
one a ways back they may still ?
animal
On
7/1/24 8:53 PM, Jon Rus via groups.io wrote:
Mike,?
.
I
have never seen one of these and this unit clearly
has a label identifying its'-self.
Is
this your actual lathe or similar to yours?
What
does the motor do? Help with balancing? Missing a
chuck that has a cutter to clear the grooves
between the armature contacts?
Does
it have a main drive motor?
.
Nice
history lesson.
On
7/1/2024 11:44 PM, mike allen wrote:
I picked up a armature lathe many years back at a
yard sale . I asked the guy how much for te
armature lathe & he said " is that what that
is " . He gave it to me cause I was the only guy
out of 50-75 people that knew what it was . Have
used it a fair amount over the years .
.?
If ya ever see one of these at a yard sale &
ya can get it cheap their on the handy side .
I've always used scotch pads instead of sand
paper over teh years , their a bit cleaner then
sand paper . Here's some scotch pad info that some
of ya may find interesting
SCOTCH-BRITE
GRIT CHART
3M
Scotch Brite Nylon Pads:
7445
- White pad, called Light Duty Cleansing -
(1000) 1200-1500 grit
7448
- Light Grey, called Ultra Fine Hand - (600-800)
800 grit.
6448
- Green (?), called Light Duty Hand Pad - (600)
600 grit
7447
- Maroon pad, called General Purpose Hand -
(320-400) 320 grit
6444
- Brown pad, called Extra Duty Hand - (280-320)
240 grit
7446
- Dark Grey pad, called Blending Pad (180-220)
150 grit
7440
- Tan pad, called Heavy Duty Hand Pad -
(120-150) 60(?)
Green
Scotch Brite is available EVERYWHERE. It's 600
grit.
Blue
Scotch-Brite is considered to be about 1000
grit.
(The
value inside the parentheses is directly from
3M.)
3M
Chart
Less
Aggressive --------> More Aggressive
7445
7448 6448 7447 6444 7446 7440
Finer
Finish --------> Coarser Finish
animal
On
7/1/24 7:33 PM, Tony Smith wrote:
You
don’t need to turn it, you just need to clean
it.
?
By
turn I meant put it in the chuck and spin it
by hand, holding? the sandpaper in the other.
?
Here’s
some good pictures showing the general idea: ,
obviously a smaller motor than what you’ve
got.
?
“kinda
rough” is an understatement.? Basically that
carbon can build up between the copper rails
and cause a short, might be your problem.? But
yeah, shiny & smooth is good.? Once you
get all the black gunk off you be able to see
if there any further damage that you’ll need a
lathe to fix, things like gouges &
pitting.
?
What
do you mean by belt?
?
Tony
?
?
?
?
My
other lathe is not running so I cannot turn
the commutator.
That commutator does look kinda rough.
What is the belt?
Ralph
|
I like cooling fans.?
Even inside point at board like do for computer's.??
Motors that are TEFC have fan inside and a fan out side to cool the motor.? Sometimes uses a aluminum end cap fir better heat transfer.?
Right I just have temperature gauge and have to wait for cooler weather any way.
We have to think of way to keep the mini lathe electronics and use as the earth ? warms up again.?
Where live has always had problems keeping electronics like mini lathe controls cool in summer.? In 1905 it was 115°F
I would say more but getting off subject.?
I am on different group where have off subject thread but the old Yahoo groups have no opinion.? Which is a dilemma for moderates here.?
Even on https://www.homemodelenginemachinist.com/ where I am a moderator we have our limits on the off subject content.?
On https://weldingweb.com they to had to put limit on the off subject thread.?
So I can see the moderators trying figure out because you need post to keep the group alive so everyone stays but still want stay on subject.??
If only Yahoo had add more one thread this would never be a problem today.??
Dave?
toggle quoted message
Show quoted text
On Sun, Jul 7, 2024 at 07:40 AM, Pierre Geoffrion wrote:
I added a computer fan to mine.
?
|
I added a computer fan to mine.
|
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
Mike Taglieri?
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky= [email protected]> wrote: And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat
permeation/infiltration, It simply slows it down, (13 times or 30
times no insulation at all),
so that a smaller cooling source, or
heating source in winter, can more easily maintain a temperature
inside the insulated container,
keeping the conditioned space more
resistant to outside temperatures, not immune.?
What kind of windows do you have?
Windows are very energy inefficient, no matter what they say about
them.?
Windows will never equal walls in
insulation value....
Sorry for your heat, was 101 here in
Atlanta for 1 day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800
wrote:
When into my hobby shop and was 114° it insulated R13 walls
ceiling R30.?
My wife and doctor does want working hot weather so put some of my
projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still
hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT,
davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why
fleeling Hot?
Check tv . No one is letting run my mini lathe.
|
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat
permeation/infiltration, It simply slows it down, (13 times or 30
times no insulation at all),
so that a smaller cooling source, or
heating source in winter, can more easily maintain a temperature
inside the insulated container,
keeping the conditioned space more
resistant to outside temperatures, not immune.?
What kind of windows do you have?
Windows are very energy inefficient, no matter what they say about
them.?
Windows will never equal walls in
insulation value....
Sorry for your heat, was 101 here in
Atlanta for 1 day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800
wrote:
When into my hobby shop and was 114° it insulated R13 walls
ceiling R30.?
My wife and doctor does want working hot weather so put some of my
projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still
hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT,
davesmith1800 <davesmith1@...> wrote: ?
?
I was wondering why
fleeling Hot?
Check tv . No one is letting run my mini lathe.
|
Victorville ,ca. area, 111 outside,,77 in insulated garage r-12 walls,6" spray foam against roof ply-exposed trusses ( 700 sq. ft.floor area), 12000 btu window unit(winter sale closeout $200.00) cut thru? high on wall,,Dave=I feel for your comfort level...
?
|
When into my hobby shop and was 114° it insulated R13 walls ceiling R30.?
My wife and doctor does want working hot weather so put some of my projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
toggle quoted message
Show quoted text
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote:
?
?
I was wondering why fleeling Hot?
Check tv . No one is letting run my mini lathe.
|
Yea, just a few degree cooler here in visalia. But still hot enough to melt things. Sunday will be 113.
george
On Saturday, July 6, 2024 at 03:35:16 PM PDT, davesmith1800 <davesmith1@...> wrote:
I was wondering why fleeling Hot? Check tv . No one is letting run my mini lathe. 
|
I was wondering why fleeling Hot? Check tv . No one is letting run my mini lathe. 
|
Re: how to.inspect.motor?
I’d still have a crack at fixing the holder, you’ve nothing to lose but a bit of time. ? Bend it back, use 2 pieces of wood to align it with the other one and put a clamp on it.? Then add some epoxy to hold it. ? No harm having a spare motor even if you won’t need it for another 30 years. ? Once it back together you’ll notice a bit of arcing from the brushes; that’s normal as they bed in. ? Tony ? ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Ralph Hulslander via groups.io
Sent: Saturday, 6 July 2024 1:09 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] how to.inspect.motor?? The brush holder is heat deformed. I will check the bearings. ? That brush mount looks trashed, from way too much heat.? Contact Little Machine Shop, maybe they can sell you just the housing.
|
davesmith1800
Ralph Lehotsky