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Replacement Motor Brushes - Are both carbon and copper used as brushes?
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Offline genusCastor  
#1 Posted : 17 December 2024 17:45:37(UTC)
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genusCastor

United States   
Joined: 19/11/2024(UTC)
Posts: 11
Location: Tejas
I have an older Marklin 89028 (CM 800) engine, when I checked the brushes I found a carbon brush on one side and copper mesh on the other. Did an innerwebs search for replacement brushes and see they are sold in packs of two dissimilar (carbon & copper) brushes. Is this a requirement to use both? Or can both carbon or copper alone (both sides) be used OK?

brushes on eBay

Thanks in advance.

- djb
The best things in life aren't things.
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Offline TrainIride  
#2 Posted : 17 December 2024 18:11:32(UTC)
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TrainIride

France   
Joined: 23/10/2010(UTC)
Posts: 2,059
Location: FRANCE
Hi,

You have to use both, and at the good place !:

CM800_inside.jpg

The two brush springs are different:

- one flat spring for the carbon brush
- one curved spring that goes inside the small hole of the copper brush.

Best Regards
Joël
Marklin HO - M track & C track - Analog mode - https://www.marklin-users.net/TrainIride - my channel : https://www.youtube.com/user/2mes2mains
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Offline FastEddie  
#3 Posted : 18 December 2024 16:41:31(UTC)
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FastEddie

United States   
Joined: 09/07/2023(UTC)
Posts: 37
Location: Delaware, Long Neck
Originally Posted by: genusCastor Go to Quoted Post
I have an older Marklin 89028 (CM 800) engine, when I checked the brushes I found a carbon brush on one side and copper mesh on the other. Did an innerwebs search for replacement brushes and see they are sold in packs of two dissimilar (carbon & copper) brushes. Is this a requirement to use both? Or can both carbon or copper alone (both sides) be used OK?

brushes on eBay

Thanks in advance.

- djb


For the older engines, you need both. Usually the carbon actually wears down while the copper one tends to wear unevenly over time and provides less contacts area. Its usually best to replace both at the same time but the carbon will wear quicker. it is also helpful to open the engine rotor assembly and clean the flat plates that the brushes contact so that the electrical connection is optimal.

Ed
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Offline genusCastor  
#4 Posted : 18 December 2024 17:02:25(UTC)
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genusCastor

United States   
Joined: 19/11/2024(UTC)
Posts: 11
Location: Tejas
Allrighty, thanks guys. The engine is running a lot better (quieter) since I cleaned the rotor and brushes. I'll need to order a new set of brushes to have on hand, these two are looking a little short. I see them for sale on eBay, any suggestions for another source?

Thanks again.

- djb
The best things in life aren't things.
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Offline hermanvk  
#5 Posted : 19 December 2024 05:03:57(UTC)
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hermanvk

Canada   
Joined: 15/11/2023(UTC)
Posts: 56
Location: Alberta, Calgary
Originally Posted by: genusCastor Go to Quoted Post
Allrighty, thanks guys. The engine is running a lot better (quieter) since I cleaned the rotor and brushes. I'll need to order a new set of brushes to have on hand, these two are looking a little short. I see them for sale on eBay, any suggestions for another source?

Thanks again.

- djb

I don't know if Tejas is a typo for Texas?
You might want to look at:
Texas European Model Trains
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Offline genusCastor  
#6 Posted : 19 December 2024 13:29:17(UTC)
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genusCastor

United States   
Joined: 19/11/2024(UTC)
Posts: 11
Location: Tejas
Originally Posted by: hermanvk Go to Quoted Post
I don't know if Tejas is a typo for Texas?
You might want to look at:
Texas European Model Trains


Tejas is a historical spelling for Texas. Cool

Thanks for the link, looks like they have some brushes, I'll order some today.

- djb

The best things in life aren't things.
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Offline dickinsonj  
#7 Posted : 21 December 2024 01:20:18(UTC)
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dickinsonj

United States   
Joined: 05/12/2008(UTC)
Posts: 1,796
Location: Crozet, Virginia
Plus one on AJCKids - they are my go to dealer for everything Marklin, from small parts to entire trains.

And I don't live anywhere near to Tejas. BigGrin
Regards,
Jim
I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains!
So many trains and so little time.
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Offline hermanvk  
#8 Posted : 21 December 2024 02:26:19(UTC)
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hermanvk

Canada   
Joined: 15/11/2023(UTC)
Posts: 56
Location: Alberta, Calgary
Originally Posted by: dickinsonj Go to Quoted Post
Plus one on AJCKids - they are my go to dealer for everything Marklin, from small parts to entire trains.
And I don't live anywhere near to Tejas. BigGrin

Neither do I (live anywhere near to Tejas), but shipping is actually killing it always for me.... Sad


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