|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
12-03-2015, 11:01 AM | #21 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Bent armature wires
If you have a lathe you can easily polish your commutator by using 400 or 600 grit emery paper. If you don't have a lathe, you could wrap a rag around the armature and lightly clamp it in a vice, then use a long strip of emery to pull back and forth over the commutator.
If you have a spare electric motor, you could also mount it on a board, then make a couple wood blocks to hold the armature, and use a flat belt or V belt to spin the armature. |
12-03-2015, 03:19 PM | #22 |
Senior Member
Join Date: Jan 2012
Location: Phoenix, Oregon
Posts: 661
|
Re: Bent armature wires
Here an old Model T armature wound in a union shop.
__________________
Mike Stitt "A business that make nothing but money is a poor business." -Henry Ford |
Sponsored Links (Register now to hide all advertisements) |
|
12-03-2015, 06:19 PM | #23 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
Thanx fer the photo, Willie. Now I know how the string winding looks.
And thanx, Tom W.; I do NOT have a lathe, but I do want to smoothe up the commutator a bit. Sounds like a job for "VICE-MAN"!
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-06-2015, 07:39 PM | #24 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
20151206_170147.jpg
20151206_165927.jpg 20151206_170127.jpgJust an update and a question... Update: I straightened out bent armature wires, wound knitting thread on armature windings, painted on plenty of red insulator varnish, used liquid tape on field windings, used 400 and 600 grit sandpaper on commutator and put on new brushes. I will reinstall generator as soon as I find an answer to this: Question: When I spin armature by hand, I hear a squeak from the brushes which are now under higher spring tension. Is there a conductive lubricant spray for the commutator to stop the squeaking?
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-06-2015, 08:24 PM | #25 |
Senior Member
Join Date: May 2010
Location: brentwood, ca
Posts: 4,240
|
Re: Bent armature wires
In picture of the brush, it looks like the brush is installed not parallel to the commutator.
I would check all three brushes for good contact with the armature. Bob |
12-06-2015, 08:39 PM | #26 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
Sponsored Links (Register now to hide all advertisements)
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-06-2015, 08:46 PM | #27 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Bent armature wires
Your string job looks good. As Bob said, you should straighten the brush holder. Remove the brush and use a needle nose plier to twist it back a little. It probably got twisted while removing a very tight screw, as that often happens. It's best to straighten it with the brush removed, or you may break the new brush.
You can draw some fine sandpaper (rough side against the brush of course) between the brush and commutator to curve the brush to the commutator. This will help the brushes to seat much quicker, and may eliminate the squeak. If it doesn't, then I wouldn't worry about it. |
12-06-2015, 08:48 PM | #28 |
Senior Member
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,908
|
Re: Bent armature wires
Do you have the battery cut off switch with the green knob? If so that could be the cause of your slow turning starter.
__________________
Dave / Lincoln Nebraska |
12-06-2015, 09:12 PM | #29 | |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
Quote:
Is the green style known for poor conductivity???
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
|
12-06-2015, 10:56 PM | #30 |
Senior Member
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,908
|
Re: Bent armature wires
My battery disconnect caused my truck to turn over slow on starting. Took it off and it made a big difference. I have heard others have the same trouble.
You might just try taking yours off for a bit to see if it helps.
__________________
Dave / Lincoln Nebraska |
12-07-2015, 12:45 AM | #31 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
It's worth a try; It might create too much resistance. Those starters pull a ton of amps, especially with 6v. Thanks for the tip, Dave.
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-10-2015, 10:45 PM | #32 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
FINAL UPDATE: My generator is back in, and works FINE! Thanx to all the great advice again. I did notice that the new third brush, being longer, gave my ammeter a higher reading of 12v, where it had been 8v before. I read an old post by Tom W from May of this year, and got the low-down on adjusting the third brush. I set it about 6v, for in-town triving.
ANOTHER SUCCESS STORY FOR THE GUYS IN THE BARN. CHUCK
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-10-2015, 10:57 PM | #33 | |
Senior Member
Join Date: Apr 2014
Posts: 709
|
Re: Bent armature wires
Quote:
Learnt this when refreshing railway traction motors during my apprenticeship some 50 years ago. |
|
12-10-2015, 11:26 PM | #34 |
Senior Member
Join Date: Nov 2011
Location: Queensland Australia
Posts: 640
|
Re: Bent armature wires
Congratulations Chuck, well done. Thanks for the update.
__________________
Adjust your points with gentle blows of a 2 pound hammer |
12-10-2015, 11:45 PM | #35 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
Thanx Runnerbun Down Under...I'm just a rookie, but workin' on my A is like nookie.
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-10-2015, 11:49 PM | #36 |
Senior Member
|
Re: Bent armature wires
Feels good does it not!!
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
12-11-2015, 12:01 AM | #37 |
Senior Member
Join Date: Apr 2015
Location: Albuquerque, NM
Posts: 441
|
Re: Bent armature wires
Nothin' like cold steel in the winter... heh heh heh... like a cold stare from Bonnie Parker...
__________________
... prosperity is not the product of charity but of industry - HENRY FORD |
12-11-2015, 12:25 AM | #38 | |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Bent armature wires
Quote:
I guess it's one of those "old wive's tales" that never goes away. |
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|