88D Posted November 2, 2020 Share Posted November 2, 2020 (edited) Hello all, I use Spratt & Winkle couplings on my 4mm EM layout, and have permanent magnets which actuate a mix of 3mm and 4mm versions. However, I am thinking of using neodymium magnets for my new layout, and have no idea of the power and size I need for this. Any of you use them, what spec, etc and where you got them from. Many thanks, in anticipation of loads of help! Dai Edited November 2, 2020 by 88D iPad messing up what I wrote! Link to post Share on other sites More sharing options...
88D Posted November 7, 2020 Author Share Posted November 7, 2020 Well, I bit the bullet and forked out the princely sum of £2.50 or so for a column of the magnets, each 2mm in diameter and 1mm thick. Laid directly on top of ballast (only need one) and actuated coupling perfectly. Remember, I use coupling one end and loop on the other; I don’t think I would have had the same success with double-coupled stock. But, the way forward for me on my new layout, and such a doddle to implement. 1 Link to post Share on other sites More sharing options...
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