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Author Topic: DG Couplings and Permanent Magnets  (Read 2582 times)

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Offline baschurch-mike

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DG Couplings and Permanent Magnets
« on: August 08, 2016, 07:05:36 pm »
Good Evening,

Has anybody out there in N Gauge Land have experience of operating DG Couplings using Permanent Magnets rather than using Electromagnets?

Thanks in Advance,

Mike Beard

Offline PLD

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Re: DG Couplings and Permanent Magnets
« Reply #1 on: August 08, 2016, 10:14:19 pm »
It's possible but I would recommend against...

With a permanent magnet if you propel over the magnet, every vehicle will uncouple whether you want it to or not. Annoying and tedious shuffling required to recouple it all up again. Also need to make sure that every vehicle has some rolling resistance to ensure  that all coupling remain under tension so that they don't accidentally uncouple when passing over magnets.

Offline Black Sheep

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Re: DG Couplings and Permanent Magnets
« Reply #2 on: October 24, 2017, 09:23:54 am »
has anyone used them for releasing the locomotive from a rake of coaches in a terminus station, so no other rolling stock other than the locomotive and the first coach will be passing over the magnet?

Offline T-TRAK_Andrew

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Re: DG Couplings and Permanent Magnets
« Reply #3 on: October 24, 2017, 09:30:48 am »
This device of mine may be a help....
https://www.youtube.com/watch?v=fV8shkYND38
Always learning, from both wins and losses.
My Model Railway blog: http://ttrakandrew.wordpress.com/
My FlickR Photostream: http://www.flickr.com/photos/85896932@N07/

Offline JBQFC

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Re: DG Couplings and Permanent Magnets
« Reply #4 on: October 24, 2017, 09:44:37 am »
i use permanent magnets at platform buffer stops and the ends of my fiddle yard tracks where train do not run through but everywhere else i use electromagnets

Offline PLD

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Re: DG Couplings and Permanent Magnets
« Reply #5 on: October 24, 2017, 10:34:08 am »
has anyone used them for releasing the locomotive from a rake of coaches in a terminus station, so no other rolling stock other than the locomotive and the first coach will be passing over the magnet?
Yes
i use permanent magnets at platform buffer stops and the ends of my fiddle yard tracks where train do not run through but everywhere else i use electromagnets
ditto...

Offline martyn

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Re: DG Couplings and Permanent Magnets
« Reply #6 on: October 24, 2017, 11:55:00 am »
Ditto Paul PLD's message; its what we do on James St lower terminus, but with B+Bs. However, in the yards where selected uncoupling is required, see below......

I would echo the non-use of permanent magnets if trains are expected to run through, to avoid unintentional uncoupling, and also if every wagon/coach has them (not so bad in rakes).

Martyn
« Last Edit: October 24, 2017, 01:25:14 pm by martyn, Reason: extra info »

Offline Black Sheep

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Re: DG Couplings and Permanent Magnets
« Reply #7 on: November 06, 2017, 09:11:28 pm »
Where would I purchase the electro magnet for DG couplings?

ta

Offline PLD

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Re: DG Couplings and Permanent Magnets
« Reply #8 on: November 07, 2017, 07:52:22 am »
Where would I purchase the electro magnet for DG couplings?

ta
Any electromagnet should do, but I'd recommend either SEEP or PK (available from Wizard Models - the supplier of DGs). The only ones I'd advice against are PECO.

Offline Carmont

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Re: DG Couplings and Permanent Magnets
« Reply #9 on: November 07, 2017, 09:27:28 am »

Offline Big bad John

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Re: DG Couplings and Permanent Magnets
« Reply #10 on: November 07, 2017, 04:12:55 pm »
These are fairly powerful. I drill a 20mm hole in the baseboard and put them right under the track and then ballast over them.

 https://www.ebay.co.uk/itm/12V-2-5KG-5-5LB-Sucked-Electric-Lifting-Lift-Hold-Magnet-Electromagnet-Solenoid/162554376673?hash=item25d8fef1e1:g:aoAAAOSw3YJZQkND

If you need a few you can get them from China for under 2 each.

Offline Black Sheep

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Re: DG Couplings and Permanent Magnets
« Reply #11 on: November 08, 2017, 10:41:37 am »
These are fairly powerful. I drill a 20mm hole in the baseboard and put them right under the track and then ballast over them.

 https://www.ebay.co.uk/itm/12V-2-5KG-5-5LB-Sucked-Electric-Lifting-Lift-Hold-Magnet-Electromagnet-Solenoid/162554376673?hash=item25d8fef1e1:g:aoAAAOSw3YJZQkND

If you need a few you can get them from China for under 2 each.

Do they pull the rolling stock around at all?

Offline Black Sheep

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Re: DG Couplings and Permanent Magnets
« Reply #12 on: November 08, 2017, 10:42:37 am »
Need to be sure the magnets will fit in the under side of the viaduct / raised section clearance wise, what's the heights on the various options listed?

Offline Big bad John

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Re: DG Couplings and Permanent Magnets
« Reply #13 on: November 08, 2017, 01:44:59 pm »
The ones I use are 20mm wide and 15mm thick they fit snug into a 20mm hole through the baseboard and didn't need anything to hold them in place. I use these on 12v for peco wagons with small magnets attached to the couplings to push the coupling upwards they have enough power to move a single or maybe two empty wagons. If movement is a problem you could try lowering the voltage or lowering the magnet away from the track. Mine are pushed right up under the track but I drilled the holes out before laying track. There is a bigger version that could possibly work just fitted under the baseboard but I suppose it depends how thick the baseboard and underlay is.

Offline Black Sheep

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Re: DG Couplings and Permanent Magnets
« Reply #14 on: November 08, 2017, 02:14:48 pm »
cheers for that info, I'm needing to pull the activating arms down on DGs I believe

But still, for the 2 to get one to try it...

 

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