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My simple magnetic couplings. - General Model Railway Discussion. - Other Areas. - Your Model Railway Club
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 Posted: Fri Dec 29th, 2017 12:45 pm
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Western Way
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A problem I had and an age old one, was to be able to join my trains together, realistically but with out relying on my fading eye site and fiddley coupling/uncoupling tools.
 
I needed some thing both easy to use but strong and reliable. After much head scratching I came up with a system using rare earth magnets. The trucks will cope with curves and can be pushed/shunted around with out parting company. It is also easy to 'uncouple' them.
 
I have videos here showing them 'in action'

https://youtu.be/I6igzWdmulY
https://youtu.be/7iWPXBj7Yw4
https://youtu.be/ZANloSZQaEQ



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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 01:22 pm
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Petermac
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Looks good on the straight John.

Can we have more details about where and how you fit the magnets, also, how do you uncouple ?



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 Posted: Fri Dec 29th, 2017 01:37 pm
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Western Way
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Thank you  :)

Yes I will take some photos and add a bit more detail on how i do them. It is very easy to make (I can only do easy).

Uncoupling is just a simple pull them apart, I use a model coupling hook, (not to any scale) if I have visitors but just use my hands when no one else is around  :mutley

John



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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 02:17 pm
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col.stephens
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Very ingenious John.  Please show us more.


Terry

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 Posted: Fri Dec 29th, 2017 02:24 pm
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Western Way
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The couplings hold well around corners and over points. 

I use rare earth magnets, one is first super glued to the under side of the wagon.




____________________
Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 02:28 pm
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Western Way
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Next is to get a 3 link chain and add a magnet again using good old super glue. It is important and also very obvious that you check this magnet will be attracted to the magnet on the bottom of the truck. Channel no 5 (other perfumes are available) works but I find it best to check manually by letting the magnet go in close proximity  ;-)

Once dried simple hang it on the models hook.





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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 02:36 pm
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Western Way
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I paint mine a weathered colour, it does not affect how well they grip but it does stop any shinny silver showing.

I also add one link of chain to the hook above the magnet on the truck. Angle this so that it touch's the chain when coupled. This then gives the impression of a continuous chain.






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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 02:40 pm
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col.stephens
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Brilliant! :thumbs


Terry

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 Posted: Fri Dec 29th, 2017 02:42 pm
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BCDR
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Hi John,

Neat. There is a commercial system over here that does exactly the same thing but using the air pipes and 2 magnets. Yours looks nicer.

Nigel



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 Posted: Fri Dec 29th, 2017 02:46 pm
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col.stephens
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What size are the magnets and where do you get them from John?


Terry

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 Posted: Fri Dec 29th, 2017 02:53 pm
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Western Way
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col.stephens wrote:

What size are the magnets and where do you get them from John?

Terry

Thank you all for your very nice comments.

Terry, I use 3mm x 0.5mm and get them from The Bay Of Fleas (ebay) they are only about £1.77 for 25 so very inexpensive.

The system can be adapted by adding and extra link if required. It is easy to tailor it to your own needs.

John :)



____________________
Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 05:16 pm
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Western Way
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Another addition you can make should you have any problems with them holding around tight curves, is to add a second magnet on top of the one fixed the bottom of the truck. I use a dab of super glue then let the second magnet drop onto this. It saves it being pulled off by any connected wagon.



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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 05:36 pm
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col.stephens
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Thanks John.  Very informative thread.


Terry

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 Posted: Fri Dec 29th, 2017 08:53 pm
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MaxSouthOz
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Very nice, John.  :thumbs

Can you show us the uncoupling, please?



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 Posted: Fri Dec 29th, 2017 09:01 pm
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Western Way
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MaxSouthOz wrote: Very nice, John.  :thumbs

Can you show us the uncoupling, please?

Thank you Max.

It is just a case of parting them either by gently pulling them apart or holding something against one and reversing the engine away.

John :)



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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Fri Dec 29th, 2017 09:14 pm
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MaxSouthOz
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Thanks, John.  :cool:



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 Posted: Sun Dec 31st, 2017 05:56 am
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peterm
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How do you get on with pushing round curves ?



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 Posted: Sun Dec 31st, 2017 09:30 am
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Western Way
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peterm wrote: How do you get on with pushing round curves ?

Hi Pete.

Pushing around curves works well enough however if there are problems an easy solution is to replace the magnet underneath the wagon with a magnet glued to a single chain link. This is then hung from the truck models hook, 'upside down' . It gives just a little more articulation if required.

I will add a couple of videos of some wagons being pushed around the curves on my points.

John :)



 






____________________
Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Sun Dec 31st, 2017 09:51 am
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Western Way
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These videos show trucks being pushed with the magnet under the truck, over the curves on points..........


https://youtu.be/8PumNomzlqk
 
https://youtu.be/-LK5Rzlk9pA
 



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Oh, Dr Beeching what have you done?
There once were lots of trains to catch, but soon there will be none.
I'll have to buy a bike, 'cos I can't afford a car.
Oh, Dr Beeching what a naughty man you are!
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 Posted: Sun Dec 31st, 2017 03:37 pm
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amdaley
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Well done John.

So simple yet seems to work so well  :thumbs



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Tony.
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