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AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > How to remove the Holtzer Cabot commutator

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How to remove the Holtzer Cabot commutator  Rate Topic 
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 Posted: Mon Mar 2nd, 2020 03:58 pm
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Dan Nguyen
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I am working on a project to rewind the reaction of a HOLTZER CABOT fan, it seems like this is a difficult project.
I don't know how to remove commutator from rotor.
Hope someone here helps on how to remove it.
Thanks!




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 Posted: Mon Mar 2nd, 2020 06:53 pm
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Don Tener
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I know it is a different maker but it could be like my Crocker Wheeler. On the Crocker Wheeler it is all held together by compression from 2 big brass nuts on each end.










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 Posted: Tue Mar 3rd, 2020 04:02 pm
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Dan Nguyen
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Thanks for your guidance!  But I still don't know how to remove the shaft from the rotor, I need to remove it to rewind the coils.  In the image, you can see the three screws in the center of the rotor, I removed those screws, but the shaft didn't loosen.  Thanks for all the help!










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 Posted: Wed Mar 4th, 2020 01:00 pm
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David Hoatson
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Can you unscrew the end plate with a pin spanner?





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 Posted: Wed Mar 4th, 2020 04:15 pm
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Dan Nguyen
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Thanks for all the help!
At this stage, I just want to remove the shaft from the rotor to rewind the coils.
I think, the commutator is okay, so don't want to open it.

Thanksss!!!

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 Posted: Wed Mar 4th, 2020 04:35 pm
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David Hoatson
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Dan Nguyen wrote: Thanks for all the help!
At this stage, I just want to remove the shaft from the rotor to rewind the coils.
I think, the commutator is okay, so don't want to open it.

Thanksss!!!

You are a brave man

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 Posted: Wed Mar 4th, 2020 05:23 pm
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Don Tener
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Okay I thought you wanted to remove the commutator. On my Crocker wheeler there are 2 set screws holding 2 brass brackets that held the iron ring with the windings. I can't say that is how yours is but on mine you would need to remove the hard cloth covering to get to the set screws because they are indside close to the shaft. But before that you would need to UN-solder all the wires going to the commutator. Now that does not mean yours is made that way so who knows for sure?

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 Posted: Mon Apr 20th, 2020 03:27 pm
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Dan Nguyen
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It was not easy, but I finally managed to remove the shaft and the commutator from the rotor.

Attached Image (viewed 264 times):

IMG_2996.JPG

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 Posted: Mon Apr 20th, 2020 04:12 pm
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David Hoatson
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Dan Nguyen wrote: It was not easy, but I finally managed to remove the shaft and the commutator from the rotor.


You are a brave man!

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 Posted: Tue Apr 21st, 2020 10:13 pm
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Jim Kovar
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Dan Nguyen wrote: I am working on a project to rewind...
Fascinating endeavor!

Please post the progress of this project
with plenty of pictures.

I've replaced a couple of commutators
on much lesser fans, and have rewound
a few armatures, but nothing compared
to what you are doing.   I have never
rewound a gramme ring.

You are an inspiration!

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 Posted: Sat Apr 25th, 2020 01:02 pm
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Chuck Abernathy
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Dan, you are truly an amazing craftsman! I would never have the skills to tackle such a daunting project!  Can’t wait to see other progress pics!  Best of luck! Those are wonderful fans, by the way! Congratulations!

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 Posted: Sat Apr 25th, 2020 01:45 pm
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David Hoatson
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Dan Nguyen wrote: It was not easy, but I finally managed to remove the shaft and the commutator from the rotor.


Did these three screws expand the mechanism to hold the coil to the shaft?

After loosening the screws, did you then tap the axle in/out? Tap the coil up/down?

Thanks. 

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 Posted: Sun Apr 26th, 2020 01:59 am
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Dan Nguyen
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It is difficult for me to describe the whole process.
Google can't translate what I mean.
Maybe I will have to make a video.

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 Posted: Sat May 23rd, 2020 02:20 pm
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Dan Nguyen
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I have completed the restoration.
And, just want to share a few pictures.


Attached Image (viewed 61 times):

IMG_3629(1).jpg

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 Posted: Sat May 23rd, 2020 02:31 pm
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Dan Nguyen
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and

Attached Image (viewed 57 times):

IMG_3652(1).jpg

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 Posted: Sat May 23rd, 2020 03:16 pm
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Russ Huber
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I envy the in-depth restorative talents of individuals like you, Dan. That was a very brave achievement. Thanks for sharing! 

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 Posted: Sat May 23rd, 2020 04:41 pm
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Dan Nguyen
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Russ Huber wrote: I envy the in-depth restorative talents of individuals like you, Dan. That was a very brave achievement. Thanks for sharing! 
Thanks for your encouragement!

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