!!

Not Registered?

Welcome!  Please register to view all of the new posts and forum boards - some of which are hidden to guests.  After registering and gaining 10 posts you will be able to sell and buy items on our N'porium.

If you have any problems registering, then please check your spam filter before emailing us.  Hotmail users seem to find their emails in the Junk folder.


Thanks for reading,
The NGF Staff.

Author Topic: DG Couplings and Permanent Magnets  (Read 2291 times)

0 Members and 1 Guest are viewing this topic.

Offline Big bad John

  • Trade Count: (+2)
  • Full Member
  • ***
  • N Gauge Society Number: 26400
  • Posts: 403
  • Country: gb
  • Gender: Male
    • Facebook
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #15 on: November 08, 2017, 02:45:24 pm »
They should do the job you need it's just that I use them to repel permanent magnets. For your situation I don't think the polarity of the connections would matter either unless the couplings are magnetized.

Offline Black Sheep

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 282
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #16 on: November 08, 2017, 03:10:32 pm »
They should do the job you need it's just that I use them to repel permanent magnets. For your situation I don't think the polarity of the connections would matter either unless the couplings are magnetized.

doh, should have thought of reversing the polarity!

on a side note, that's not a hornet in your profile picture is it?

Offline Big bad John

  • Trade Count: (+2)
  • Full Member
  • ***
  • N Gauge Society Number: 26400
  • Posts: 403
  • Country: gb
  • Gender: Male
    • Facebook
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #17 on: November 08, 2017, 04:45:59 pm »
No it's an XJR 1300sp

Offline Black Sheep

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 282
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #18 on: November 08, 2017, 04:52:29 pm »
fair enough,

Had a ZZR and recently got a Hornet

Offline Black Sheep

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 282
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #19 on: December 03, 2017, 10:39:19 pm »
Finally got things wired up to test and one coupling built!

Anyone know what measurement they actually cut the actuating wire to and any advice on shaping it and holding it in place while soldering it?

Thanks :D

Offline lil chris

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 23889
  • Posts: 2751
  • Country: england
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #20 on: December 10, 2017, 07:05:21 pm »
I have built my first d & g coupling, I used florist wire and made a one piece loop to avoid soldering.
Lil Chris
My layout here East Lancashire Lines
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=29492.0

Offline Black Sheep

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 282
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #21 on: December 10, 2017, 08:41:14 pm »
I've done some enquiring about one piece loops and have been told that over time they do magnetise and stop working.

one thing I'm worried about is, the way in which the single wire wraps around, the side with the dropper on is not supported and the loop may open up over time, especially on longer trains?

Offline Dave Searle

  • Trade Count: (0)
  • Full Member
  • ***
  • 2mm Association Number: 1189
  • Posts: 26
  • Country: 00
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #22 on: December 15, 2017, 11:53:29 am »
Hi,

I use a single  piece of iron wire stripped from the "ties" for small freezer bags.  These are bent into a suitable loop with a small "tail" at the opposite end to the dropper to prevent them pulling apart.  Hopefully these photos show the idea:






Cheers,

Dave

Offline Black Sheep

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 282
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #23 on: December 15, 2017, 05:04:18 pm »
Thanks for showing that,

Have you had any issues with the wire becoming magnetic and stopping working correctly at all?

Offline Dave Searle

  • Trade Count: (0)
  • Full Member
  • ***
  • 2mm Association Number: 1189
  • Posts: 26
  • Country: 00
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #24 on: December 15, 2017, 05:31:42 pm »
No, we've not had any magnetic problems, just minor alignment issues if they get knocked when storing them.

Cheers,

Dave

Offline Delboy

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 503
  • Country: gb
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #25 on: December 15, 2017, 05:52:01 pm »
She who must be obeyed says I am spending too much time on this forum. I love her dearly but what does she know?

Offline lil chris

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 23889
  • Posts: 2751
  • Country: england
  • Gender: Male
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #26 on: December 23, 2017, 10:01:51 pm »
This is my first attempt at making a d & g coupling with a one piece loop made from florist wire. Has you can see it is supported on both sides the the dropper is in the centre. I intend to use d & g electro magnets and power them by a/c which should prevent the magnetizing of the dropper. I have two of the magnets installed on the layout in the goods yard, must admit I have not wired them up yet. I have another 3 magnets for when I decide where to install them plus I have a b & b magnet too, I need to make a brkt for that one, it does not come with one. I need to start making a few more couplings and then start the job of fitting them to my stock, old stock first. I have made my own height gauge, i just want to avoid canabilising my locos If I can avoid that.
Lil Chris
My layout here East Lancashire Lines
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=29492.0

Offline Paul-H

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 254
  • Country: gb
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #27 on: December 24, 2017, 09:41:30 am »
Hi all

Re the Chinese electro magnets listed above, what are you powering them with, i got a batch and tried them with a 12v 5 Amp supply and all of my provide negligable magnetic pull or push.

Not enough to activate any of my magnetic couplings. They cant even hold their own weight if attached to a metal blade.

Any thoughts or am I expecting too much

Offline Yet_Another

  • Trade Count: (+3)
  • Full Member
  • ***
  • N Gauge Society Number: 25847
  • Posts: 733
  • Country: gb
  • Gender: Male
  • Chacun à son goût!
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #28 on: December 24, 2017, 12:08:48 pm »
AC or DC?
Tony

'...things are not done by those who sit down to count the cost of every thought and act.' - Sir Daniel Gooch of IKB

Offline Paul-H

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 254
  • Country: gb
    • Awards
Re: DG Couplings and Permanent Magnets
« Reply #29 on: December 24, 2017, 01:00:57 pm »
DC

 

Please Support Us!
June Goal: £55.00
Due Date: Jun 30
Total Receipts: £60.00
Above Goal: £5.00
Site Currency: GBP
109% 
June Donations


Advertise Here