Digital coupler compatible with Tillig and Kuehn coupler

Digital coupler compatible with Tillig and Kuehn coupler

Postby Dibbedabb » Sun Jul 03, 2016 5:18 pm

Hey guys,

In case you don't know yet, since around a year SD-Modell offers a digital coupler: http://www.sd-modell.de/produkte/tt-digitalkupplung
It is 100% compatible with Tillig or Kuehn coupler, though not to itself (you can't couple two locos equipped with this coupler). The plastic part is injection molded, NOT 3D print. It fits into the standard coupler slot and comes with a shaft with 2 settings, so it is able to provide a shorter and a longer distance to the coupler it is coupled to, therefor also working with locos without close coupler mechanism.
With the short setting (the slot end of the coupler is cut off at a defined line) the buffer distance between loco and car is roughly a millimeter more compared to a loco with a standard coupler - if any.

It works really great, but you need to be able to solder it onto the loco's board or the decoder - depending on the loco you want to equip and the decoder interface it offers. I have it in 2 Pikos V90, and although I'm all thumbs, when it comes to soldering, I got it done...

It's not that cheap (20 Euros per piece, 40 Euros the pair), but definitely worth the money. I don't know, if SD-Modell ships outside Germany, but some of the larger German online shops also have it listed, like elriwa or MBS in Sebnitz.
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby ConducTTor » Mon Jul 04, 2016 11:17 pm

I've been contemplating buying a few but wanted to hear others' experiences first. Is it reliable? Is it durable?
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby Dibbedabb » Tue Jul 05, 2016 3:23 am

Both yes. I guess it's more durable than the one Krois sells, because their's is made of 3D print, and no one knows, how 3D print reacts when it's aging.
Although it's sold as a shunting coupler (meaning it is aimed at locos in a yard or so), I would consider it mainline save. I think it's like any coupler: If your tracks look like >> this <<, it might become difficult :mrgreen:
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby ConducTTor » Tue Jul 05, 2016 11:56 am

Cool I'll have to try them out. Thanks!
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby krokodil » Tue Jul 05, 2016 1:29 pm

Actually not the track geometry is the main problem but the function of the close couplers. In downhill ride the cars are pushing the locomotive what causes an uncoupling and the new couplers will not recouple when the train arrives to the level portion of the track. For that reason I replaced all new close couplers with the older BTTB couplers they are much safer on the smaller home layout with bigger gradients and are much easier to couple. I wish to have Kadees on TT cars. Those are far away the best couplers on the market.
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby CN-TT » Mon Jul 18, 2016 6:54 pm

I like the SD coupler very much. I have 2 on my Piko BR290. When they are installed correctly (parallel to the tracks) they work without any problems. I probably will buy more in the future.

PS: Ingo and I came up with the same idea of the coupler at nearly the same time but on different continents.
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Re: Digital coupler compatible with Tillig and Kuehn coupler

Postby ConducTTor » Mon Jul 18, 2016 8:31 pm

I'd been thinking about doing something like this but never actually got around to doing it lol
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