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Question Motor replacement - Motor replacement compatibility challenge
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Offline nick.r  
#1 Posted : 01 June 2024 22:29:00(UTC)
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nick.r

United States   
Joined: 21/12/2022(UTC)
Posts: 3
Location: Texas, Austin
Hi,

I have a 3153 which is a Delta locomotive.
I'm building a new layout, all digital of course and converting the locomotives one by one.

For right now however, my question is this:
Can I replace the existing motor (which is using 3 poles, ground, forward, backward) with a new 60941 motor (2 poles that get inverted) and keep the existing Delta decoder?
If the answer is yes, then how should I wire this up, with diodes maybe?
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Offline JohnjeanB  
#2 Posted : 02 June 2024 00:15:05(UTC)
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JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,550
Location: Paris, France
Hi Nick

Can I replace the existing motor with an HDLA, 5 pole DC motor?
On my Koll's Catalog it says that the BR 120 of the German DB in Beige Red has been manufactured in 1980-1984 and one shot in 1987.
So early models may still have the SFCM motor (Small Flat Collector Motor). The motor can be recognized by its round-section brushes (1 copper and 1 graphite) In this case the 60943 motor can be used
Later models using a DCM (Drum Collector motor) with 2 graphite brushes with square section. In this case the 60941 motor can be used.


Can I keep the existing Delta decoder?
Straight out of the box, no you can't and besides, the performance could be worse than with the original motor.

Another interesting possibility
- Keep the motor and use a 60906 decoder (MFX, DCC, MM2). It has 2 additional outputs additional to headlights outputs (x2). It has everything except load regulation.

Cheers
Jean
My layout videos
latest vid
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thanks 1 user liked this useful post by JohnjeanB
Offline nick.r  
#3 Posted : 02 June 2024 01:07:04(UTC)
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nick.r

United States   
Joined: 21/12/2022(UTC)
Posts: 3
Location: Texas, Austin
Quote:
Another interesting possibility
- Keep the motor and use a 60906 decoder (MFX, DCC, MM2). It has 2 additional outputs additional to headlights outputs (x2). It has everything except load regulation.


The original motor IS my problem.

I'll get myself another decoder as well then.

Thank you
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Offline 60904  
#4 Posted : 02 June 2024 23:07:19(UTC)
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60904

Germany   
Joined: 27/11/2007(UTC)
Posts: 324
Originally Posted by: JohnjeanB Go to Quoted Post
Hi Nick

Can I replace the existing motor with an HDLA, 5 pole DC motor?
On my Koll's Catalog it says that the BR 120 of the German DB in Beige Red has been manufactured in 1980-1984 and one shot in 1987.
So early models may still have the SFCM motor (Small Flat Collector Motor). The motor can be recognized by its round-section brushes (1 copper and 1 graphite) In this case the 60943 motor can be used
Later models using a DCM (Drum Collector motor) with 2 graphite brushes with square section. In this case the 60941 motor can be used.


Can I keep the existing Delta decoder?
Straight out of the box, no you can't and besides, the performance could be worse than with the original motor.

Another interesting possibility
- Keep the motor and use a 60906 decoder (MFX, DCC, MM2). It has 2 additional outputs additional to headlights outputs (x2). It has everything except load regulation.

Cheers
Jean


3153 has always had the DCM and no factory built in Delta. Never the SFCM. If you like to keep the original performance use 60906; otherwise change to 5 pole motor.
Best regards
Martin
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Offline nmbssncb  
#5 Posted : 15 June 2024 18:20:46(UTC)
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nmbssncb


Joined: 07/08/2008(UTC)
Posts: 29
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