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Another Buckeye Coupler Question
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 Posted: Wed Oct 15th, 2014 06:20 pm
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Salada
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Can anyone please tell me if the Bachmann EZ type of coupler as used on their On30 stock is supposed to automatically uncouple if placed over a track mounted magnet ?.

I cannot get the damn things to uncouple at all, despite using some quite powerful industrial type magnets. Only thing that I can get to work is the 0-5-0 switcher with a cocktail stick to open the 2 sets of jaws. Not quite what I've got planned for the St Juan Extension !.

Perhaps there is a minimum radius below which the coupler won't uncouple but I have tried everything from 36" radius upwards to straight track, without any success.

Are ALL Kaydee type couplers magnet operated, with or without "delayed operation" ?.

What would you Gentlemen suggest as the most reliable magnet uncoupling buckeye compatible with Bachmann On30 stock ?.  And which type for delayed uncoupling ?.


Regards  &  Thanks                     Michael

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 Posted: Wed Oct 15th, 2014 08:18 pm
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Herb Kephart
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Michael

Along the line, someone gave me a B'mann train set--4-6-0, and 3 passenger cars. Included was a small oval of plastic based sectional track, and one section of straight had an uncoupling magnet. No problem with uncoupling, in fact if the loco hesitates from dirty track just at the right time--some cars will be left behind.

Do you have the ''air hoses'' so that they are just clearing the rail heads at switches, etc?

The couplers must be absolutely free to move sideways in the pockets.
  I think that this might be your problem. The draft gear box, and the coupler are both  molded in a super slippery plastic,  and if you haven't used the boxes that are   provided, I doubt that you are going to have much success as there might be too much friction.

Try a set of KD's, in the On30 size.   You will have to move the coupler assy up, as the B'mann stock has the couplers at HO standard height, which is lower than scale for On30.

Also --see post 13 in '' Kadee coupler question''


Herb




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 Posted: Wed Oct 15th, 2014 11:48 pm
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pipopak
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I polished the inside of the draft boxes with the smooth end of a drill and powdered graphite. Then after assembly squirted some graphite into the box and moved the coupler back and forth a few times. Filed, sanded and polished the whole coupler and put extra care on the knuckle faces. Lotsa work, but worked fine after. Jose.



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 Posted: Thu Oct 16th, 2014 06:04 pm
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Salada
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My thanks to Herb & Jose.

It seems that knuckle couplers need more fiddling with than I had realised. Almost all of my RR experience to date has been with 1:1 scale historic stock which never used knuckle couplers in the UK nor some other European countries.
Powdered graphite anyone ?

Regards                       Michael

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 Posted: Sat Oct 18th, 2014 06:39 am
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Si.
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Hi Michael

Powdered graphite...

...is sold be Kadee under the name 'Grease Em'...

...comes in a lil' tube with small nozel, you kinda 'puff' it in to the draft boxes.

A high-number 'B' type artists pencil works pretty good as well.

Either penciled on, or a bit of sanding gives you a 'scale pile' of 1:48 graphite !!

Cheers.

Si.



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 Posted: Sat Oct 18th, 2014 03:50 pm
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Salada
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Hello Si,

Thanks for that - I've got an 8B pencil that should do it. Sounds like you know about these knuckle/buckeye problems ?.

Cheers                  Michael 

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 Posted: Mon Oct 20th, 2014 12:34 am
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Si.
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Hi Michael

Yeah kinda !

When they work, I think they work pretty well...

...correct height, freedom of movement etc. all VERY essential though.

I have used Kadee's in HO, On3, O & G scale.

I tried quite a few various types of magnet which I had knocking about...

...the only one that actualy worked OK for me, was the 'official' Kadee magnets.

I couldn't quite figure out why; they must be polorized in a weird way or something ?!

I have a Bachmann Shay & Porter sitting on the table here...

...& did re-investigate the whole coupler issue a bit recently.

My issue was that since I want to 'up-scale' the locos to 1:35...

...the std. Bachmann couplers look a tad small (quite a bit actualy).

I did notice during this; that there is now a competing brand to Kadee, making quite nice looking On3/30 couplers.

I think they are called the 'San Juan Car Company'.

They look pretty darn good, both in appearance & ops. tech...

...slightly bigger than On3 Kadees, some say this looks way better for bigger prototype D&RGW, RGS etc. stuff.

Could be worth checking out.

The Bachmann On3 couplers seem smaller to me than the Kadee On3 ones.

I used to have a TON of HO & N locos/cars etc...

...& some G 1/2"...

...I figure these days, I will have so few pieces of rolling-stock; it is worth the time & trouble, to get a coupler you like.

Cheers.

Si.

Mr. Woodrow has got me thinking L&Ps as well...

...got 'the look' for 2-bit loggin' & minin' death-traps !

Last edited on Sun Feb 14th, 2016 09:42 am by Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Mon Oct 20th, 2014 05:31 pm
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Salada
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Hello Si,

Thanks muchly for all that. The only model buckeye/knuckles I've ever seen are Mr Bachmann's. I've upped my magnetic uncoupling trials to having 3 high stacked industrial magnets & the damn things still won't uncouple. Perhaps I could persuade the D&RGW management to revert to L&P !.

That San Juan stuff is expensive, especially + UK tax, + UK tax on US postage, + UK "inspection fee" & + anything else they can think of charging us for. 

 Cheers                    Michael

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 Posted: Tue Oct 21st, 2014 04:28 am
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Si.
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Hi Michael

I did find 1 place doing the San Juan couplers in the UK...

...can't remember the price; but it seemed 'ok' as things go.

I don't have 100 frieght cars, coupler expense would be minimal.

Mmmm...

Cheers.

Si.

I don't think you'll get 'em to uncouple with ANYTHING other than a Kadee magnet...

...now THOSE suckers ARE expensive !

(guess it depends how many yer need though)


Last edited on Sun Feb 14th, 2016 09:43 am by Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Tue Oct 21st, 2014 06:00 pm
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Salada
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Thanks again Si.  Now what else could I do with a "magic wand" ?.

Regards                      Michael

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