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Offline mjborelli  
#1 Posted : 25 November 2022 22:15:31(UTC)
mjborelli


Joined: 24/02/2018(UTC)
Posts: 32
Location: Washington, Federal Way
Good afternoon.

I currently have a Marklin 1071 electric motor R & B terminals. I've used it with my Marklin 6667A 16V transformer. There is a switch on the side of this electric motor which slides back & forth to reverse the directions of this motor. Is there a way to bypass this switch & control the clockwise and counterclockwise motor directions through another type of wiring switch instead?

Detailed instructions would be appreciated.
Offline JohnjeanB  
#2 Posted : 26 November 2022 02:27:13(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,084
Location: Paris, France
Hi MJ

The 1071 motor is a "universal" motor, both for DC and AC.
One way to remote control the motor from a distance with damaging it is:
- to connect one wire to each of the contact poles (not the one with the rotating arm) without soldering on the sliding surface (so that you may reverse the modification)
- to side an adhesive tape on each of those contact poles so that the contact lever does not contact them
- to connect the 2 added wires to a SPDT extreme contacts (NO, NC) and the C (common) to the O side of the transformer 16 VAC output
- connect the B side (16 VAC) of the transformer to the side plug near the opposite side of the brushes (I think)


Cheers
Jean
Offline mjborelli  
#3 Posted : 26 November 2022 04:47:36(UTC)
mjborelli


Joined: 24/02/2018(UTC)
Posts: 32
Location: Washington, Federal Way
Originally Posted by: JohnjeanB Go to Quoted Post
Hi MJ

The 1071 motor is a "universal" motor, both for DC and AC.
One way to remote control the motor from a distance with damaging it is:
- to connect one wire to each of the contact poles (not the one with the rotating arm) without soldering on the sliding surface (so that you may reverse the modification)
- to side an adhesive tape on each of those contact poles so that the contact lever does not contact them
- to connect the 2 added wires to a SPDT extreme contacts (NO, NC) and the C (common) to the O side of the transformer 16 VAC output
- connect the B side (16 VAC) of the transformer to the side plug near the opposite side of the brushes (I think)


Cheers
Jean


Hi Jean,

Thanks for your response. Is there any way you could provide a wiring diagram showing your suggestions in more detail?
Offline JohnjeanB  
#4 Posted : 26 November 2022 11:51:02(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,084
Location: Paris, France
Hi
The only thing I can provide is this diagram:
- Top : how the motor is factory wired
- Bottom: how the remote SPDT switch is added
Sans titre.png
Cheers
Jean
thanks 1 user liked this useful post by JohnjeanB
Offline Mman  
#5 Posted : 26 November 2022 20:59:03(UTC)
Mman

United Kingdom   
Joined: 23/05/2021(UTC)
Posts: 247
Location: England, Guildford
Yes, luckily the Märklin Metall motors 1071 and 1072 have separate field windings (shown as ‘inductor’) for forward and reverse directions just like the older analogue Märklin H0 locomotives. The 1072 (a larger motor) already has the wires brought out to the supplied single pole double throw switch for convenience. The 1072 is an impressive looking fully enclosed motor but not very powerful. Both motors were also marketed by Meccano of Liverpool in dark blue boxes in the 1970s with the prefix ‘EU’ before the number.
ChrisG
thanks 2 users liked this useful post by Mman
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