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Kadee couplers - Layout Design, Trackwork & Operation. - Getting You Started. - Your Model Railway Club
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 Posted: Thu Nov 7th, 2019 08:57 pm
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Sol
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An interesting topic re the brass centreing spring for Kadee couplers


http://cs.trains.com/mrr/f/88/t/278227.aspx?page=1

especially this post

Harrison, the box spring is designed to "only" to be installed "on top of the coupler". If you look closely at at the spring you will see a big difference in the spring arms. As mentioned, there's a strong and weak side to help with uncoupling and delayed action. Also, note the end of the shank on the #5 type of couplers have different angles that are not symmetrical and these match the different spring arm angles. This is why it's important to always have the spring on top. If the spring is installed on the bottom it may work OK but eventually there will be problems. Note that when the couplers are coupled and in operation this takes the centering spring out of the performance issue so the spring on the bottom has no affect. It's when the coupler has to be uncoupled and centered properley that problems will arise and the spring may wear out faster. Remember that this is all late 1950s technology which is still the most popular in our coupler line, presently even more than our whisker couplers.


 Sam Clarke R&D Kadee Quality Products



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Ron
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 Posted: Thu Nov 7th, 2019 09:41 pm
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Putting in the whisker types is bullet proof - there is only one way to put one on (unless you fancy upside down operations). As are the NEM types. All Kadees are handed, that's why the orientation of the metal "spring" with uneven length arms is probably important (I've put #5's in with the spring on the bottom or the top and never noticed any difference twixt the 2). Which begs the question - why do the whiskers have even lengths? Or NEM's have none?


Nigel



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 Posted: Mon Mar 23rd, 2020 09:46 am
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Sol
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Another site to read about Kadee & UK outline

http://www.mrol.com.au/Pages/Vu/FittingKnuckleCouplings



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 Posted: Fri Mar 27th, 2020 10:57 pm
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Petermac
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Interesting comments about the brass spring positioning Sol.  I've never really studied how these things actually work - just been pleased that they do.

The article about fitting knuckle couplings to UK stock is very useful - now saved for future reference so many thanks.

I'll naturally read it again but I'm not absolutely clear about what he meant by "compatibility" with botnh E-Z Mate anf Kadee.  Did he meant one could use either or without any compatibility problems or did he mean that, after any necessary modifications to stock, either type could be fitted - i.e. no difference in modifications regardless of which coupling one was using ....................

I've had to contend with most variations on UK stock, some easy to modify, others a real PITA and, until recent models, almost none without some kind of modification.

I suppose, give that UK is the only country in the world modelling  "OO" gauge, 4mm scale,  it comes as no surprise that we Brits like to be "different" ................. :mutley :mutley




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 Posted: Sat Mar 28th, 2020 02:03 am
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Ssamm
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Thanks for the article, Sol.

My local Mr Fixit (Pete) is just back from the UK and confined to barracks for the next couple of weeks. Not long enough some would say! :lol:

So I am teaching myself the intricacies of the Kadee system and the article has been useful. I can already see that I am a bit overcautious and have the knuckle too far forward.



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Evan

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 Posted: Sat Mar 28th, 2020 08:43 am
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Colin W
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Thanks Sol,

I've added the latest link to all your earlier reference materials here.:cool:

Colin



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 Posted: Fri Apr 17th, 2020 09:35 am
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peterm
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Ssamm wrote: Thanks for the article, Sol.

My local Mr Fixit (Pete) is just back from the UK and confined to barracks for the next couple of weeks. Not long enough some would say! :lol:

So I am teaching myself the intricacies of the Kadee system and the article has been useful. I can already see that I am a bit overcautious and have the knuckle too far forward.



Cheers
Evan
Oi, I've just read that and I'd like everyone to know that I'm on the loose again. That coupler looks like it might not be far enough forward for tight curves. Fingers crossed. I'm actually enjoying seeing things take shape as I have a bash at scenery. Not much yet but I'm getting there. I love the Kadee couplers and have started using 3mm cube neodymium magnets for uncoupling. Much cheaper than the genuine article.



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