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Track Buffer-Stop Used For Battery Charging
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 Posted: Sat Apr 3rd, 2021 09:57 am
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Steve Soar
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Hi  

Prototype of a charging system,
using loco buffers, in contact with a buffer-stop. 

3 position switch selects :-   Charging / Off / Run
 
Buffer-stop has small (3mm dia. x 3mm long) mobidium magnets,
to couple with mild steel buffers on the loco,
which connect to the onboard circuit board.

If the charger is set to 'Charging', and the loco runs at low speed onto the buffer-stop,
the loco switches off as soon as it makes contact with the buffer-stop, and charges up.

After charging, the switch is set to 'Run', and the loco powers up and can be driven off.
The onboard circuitry is quite simple, and I will post a diagram if anyone is interested.

I am also making a 'battery wagon',
this will have a larger battery, charger circuit and magnetic buffers,
so that charging can be done anywhere on track.

Hope the photo is clear, please ask questions.

Best wishes 
Steve





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 Posted: Sat Apr 3rd, 2021 10:30 am
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Helmut
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Which demonstrates that modeling continental practice,

instead of US style center-coupling,

can have advantages sometimes.





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 Posted: Sat Apr 3rd, 2021 12:17 pm
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Steve Soar
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Never thought of that !!!  

Thanks for your input.

Regards
Steve  


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 Posted: Wed Apr 7th, 2021 06:14 am
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Si.
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My favourite buffers !  :old dude:





:java: :mex:


Si.




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 Posted: Wed Apr 7th, 2021 06:31 am
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Steve Soar
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Spring loaded too, unfortunately I had to Modify mine,
so that the buffers are isolated from the chassis. 

I am now working on a plastic version,
and also reducing the size of the magnets.

(loco could not drive away after charging and needed a push)

Nice Photo

Regards
Steve


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 Posted: Thu Apr 8th, 2021 04:22 pm
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fallen
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You could experiment with a thin piece,
of copper or brass, on the face of the magnets,

They would be good for electrical contact,
and slightly reduce the strength of the magnet's hold.

Frank


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 Posted: Thu Apr 8th, 2021 06:26 pm
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Kitbash0n30
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That is an interesting idea.

Cool !






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 Posted: Fri Apr 9th, 2021 05:57 am
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Steve Soar
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Good idea,   

I have some silver loaded conductive glue,
which could hold a small piece of copper.

Thanks for the tip.

Regards
Steve


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 Posted: Fri Apr 9th, 2021 05:59 am
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Steve Soar
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Thanks, works well.

Regards
Steve



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 Posted: Sun Apr 11th, 2021 05:41 pm
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Toeffelholm
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Steve Soar wrote:   
If the charger is set to 'Charging', and the loco runs at low speed onto the buffer-stop,
the loco switches off as soon as it makes contact with the buffer-stop, and charges up.

After charging, the switch is set to 'Run', and the loco powers up and can be driven off.


Hi Steve,

So how did you manage that the loco recognizes the buffer contact and switches off?

Juergen




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