As far as I can tell the difference is dependent on the
manufacturers idea on what & how their tool is supposed to
function . I can't find a picture of the second one I mentioned
with the hacksaw blade . I can't get to that second " armature
lathe " so show what it is/has . As far as cleaning out the
armature slots one uses the hacksaw or maybe it's a hacksaw type
blade vs a small rotating blade? They both achieve? the same
result , but I'm betting that the hacksaw blade unit will have a
much earlier patent date . I have no idea whe I'm gettin out so
dependin on what I'm allowed to do I will get some pics so at
least we can add to the motor cleaning database .
animal
On 7/3/24 7:18 AM, Ralph Hulslander
wrote:
toggle quoted message
Show quoted text
RE: "
?It has a short piece of hacksaw blade mounted for cleaning out
the slots"
I thought someone?had said it was not a good idea to use a
hacksaw?blade.
I know the Armature lathes have a rotating mental bit to
clean the slots.
So is there a difference?
Ralph
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
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
