Re: how to.inspect.motor?
That brush mount looks trashed, from way too much heat.? Contact Little Machine Shop, maybe they can sell you just the housing.
By
MikeK
·
#119814
·
|
Re: how to.inspect.motor?
Ralph,
.
*Lots of 8" lathes *are 7" lathes with a 1/2 inch rise on the spindle axis.
I'm working on 1/2" risers, maybe even 1" risers to get to 9", but it really wont be a 9" in strength and
By
Jon Rus
·
#119813
·
|
Re: how to.inspect.motor?
??? Ralph how do those motor bearings feel , How did the motor sound
was there any whining on the brush side ?
??? I'm kinda thinking? that ya may also have a bearing on it's way out
. I'm
By
mike allen
·
#119812
·
|
Re: how to.inspect.motor?
Ralph,
That is a massive misalignment!
Is that glued in place or
is that some kind of sealer, or
did it deform from running hot!
.
You're on track for something!
Send us a photo of the whole
By
Jon Rus
·
#119811
·
|
Re: how to.inspect.motor?
The gaps just need to be below the copper. Realistically, anything that will get them there will work - toothpicks, small screwdriver, blunt scribe, etc. Cheap and/or old toothbrushes are handy for
By
Roy
·
#119810
·
|
Re: how to.inspect.motor?
Commutator cleaned up nicely. Looks pretty flat, doesn¡¯t seem worn. I didn¡¯t expect it to be, our little lathes really don¡¯t get enough use for that to happen. Unlike something like a car
By
Tony Smith
·
#119809
·
|
Re: how to.inspect.motor?
Oops, here is the rough comutator! ( https://photos.app.goo.gl/Xbbm2DZUPaofjkkz8 )
By
Ralph Hulslander
·
#119808
·
|
Re: how to.inspect.motor?
I have the motor off the lathe and have cleaned up the comutator, which I have a bunch of question.
But thought I show the brush holder first.
As you can see the brush holder has gotten hot and is
By
Ralph Hulslander
·
#119807
·
|
Re: how to.inspect.motor?
Youtube
https://www.youtube.com/watch?v=uNBfoQw0HRE
at 8:06
By
Jon Rus
·
#119806
·
|
Re: how to.inspect.motor?
What's needed is a saw blade that fits neatly in the gap between commutator segments - on larger motors, a hacksaw blade is appropriate. On these smaller motors, an X-Acto razor saw blade is the right
By
Roy
·
#119805
·
|
Re: how to.inspect.motor?
As with everything, there are differances. Those are from small armature to huge ones. So any method to clean out the insulation, mica, would vary in size and method. I mentioned hacksaw blade
By
[email protected]
·
#119804
·
|
Re: how to.inspect.motor?
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
By
mike allen
·
#119803
·
|
Re: how to.inspect.motor?
Ralph,
Truly any thing that gets the job done with the lease amount of damage, is the "correct" tool.
.
You need to clean the gap, then lower the material in the gap to below the surface of the
By
Jon Rus
·
#119802
·
|
Re: how to.inspect.motor?
Handsaw blade will be fine. You want something with a bit of width to scrape out the junk. Hacksaw is pretty blunt compared to a knife and less like to cause any damage.
Anything that you can
By
Tony Smith
·
#119801
·
|
Re: how to.inspect.motor?
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
By
Ralph Hulslander
·
#119800
·
|
Re: how to.inspect.motor?
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
By
mike allen
·
#119799
·
|
Re: how to.inspect.motor?
You can do a pretty good job by just using a strip of abrasive paper in a shoe-shine motion with the armature held in a vise or clamped to something convenient. I did quite a few motors that way
By
Roy
·
#119798
·
|
Re: how to.inspect.motor?
Here's a pretty comprehensive guide to actually available belts & pulleys:
< https://sdp-si.com/tools/download-papers.php >
Roy
By
Roy
·
#119797
·
|
Re: how to.inspect.motor?
You do NOT need to remove the timing belt from the lathe , just from the motor pulley. You may need to remove the lead screw to remove the nuts that hold the motor to the lathe bed. You should not
By
paul mcclintic
·
#119796
·
|
Re: how to.inspect.motor?
Thanks for the help. I will have to clear a space to dismantle the lathe
for further inspection. That will not be easy!
Ralph
[email protected]> wrote:
By
Ralph Hulslander
·
#119795
·
|