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Offline kaav800  
#1 Posted : 06 July 2019 12:22:42(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
Hello folks!!
I have a pair of 3601 points from 50,s that have black contactshoes(the + contact) instead of silvercromed.Has anyone heard or seen
somthing like this,or have som information regarding this??
They are sold from a firm i AAchen (long gone i guess) Julius Forster & co.I have never seen this and i have seen alot of
M-tracs.
Best regards from the newbee kaav800
Offline Tiki734  
#2 Posted : 06 July 2019 12:49:09(UTC)
Tiki734

Australia   
Joined: 13/03/2012(UTC)
Posts: 209
Location: Perth
Hi
I'm also mainly interested in the 700 and 800 series. Post a photo.
You are very lucky living in such a fantastic country like Norway. I travelled as far North as Hammefest a couple of years ago.
Roge
Offline kaav800  
#3 Posted : 06 July 2019 18:58:53(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
Originally Posted by: Tiki734 Go to Quoted Post
Hi
I'm also mainly interested in the 700 and 800 series. Post a photo.
You are very lucky living in such a fantastic country like Norway. I travelled as far North as Hammefest a couple of years ago.
Roge


Hello Tiki734!!
Yeah superb.Ill try to post pictures but maybee not an easy task??Mellow
Offline kaav800  
#4 Posted : 06 July 2019 21:31:10(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
I'm also mainly interested in the 700 and 800 series. Post a photo.
You are very lucky living in such a fantastic country like Norway. I travelled as far North as Hammefest a couple of years ago.
Roge


Hello Tiki734!!
Yeah superb.Ill try to post pictures but maybee not an easy task??
Offline kaav800  
#5 Posted : 06 July 2019 21:57:55(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
Originally Posted by: kaav800 Go to Quoted Post
I'm also mainly interested in the 700 and 800 series. Post a photo.
You are very lucky living in such a fantastic country like Norway. I travelled as far North as Hammefest a couple of years ago.
Roge


Hello Tiki734!!
Yeah superb.Ill try to post pictures but maybee not an easy task??

Have problems uploading these images,how does it work? the URL ?
Finally managed this. For info the points are NOS, never used and with the blue boxes.

Edited by user 07 July 2019 12:12:13(UTC)  | Reason: Not specified

Offline Tiki734  
#6 Posted : 11 July 2019 20:32:36(UTC)
Tiki734

Australia   
Joined: 13/03/2012(UTC)
Posts: 209
Location: Perth
Hi
Photos are great. This is standard Marklin supply.
Regards
Roger
Offline cookee_nz  
#7 Posted : 11 July 2019 23:11:43(UTC)
cookee_nz

New Zealand   
Joined: 31/12/2010(UTC)
Posts: 3,074
Location: Paremata, Wellington
Originally Posted by: Tiki734 Go to Quoted Post
Hi
Photos are great. This is standard Marklin supply.
Regards
Roger


Can't say I've ever seen M-track with blackened tongues, or perhaps I have and just didn't notice but I am a "what's wrong with this picture?" guy so I would have thought I'd remember seeing one.

Either way, I don't think they are anywhere near as common as the (nickel)? plated version.

Just my experience
Cookee
Wellington
NZ image
Offline mvd71  
#8 Posted : 11 July 2019 23:41:54(UTC)
mvd71

New Zealand   
Joined: 09/08/2008(UTC)
Posts: 1,047
Location: Auckland,
In the immortal words of Bart Simpson "think harder Homer"

If we look at the picture harder, they appear to have heat discolouration. And the previously melted plastic around the mounting suggests heat also. The old Marklin transformers were powerful enough to do this if there was a short somewhere.

From the factory these tongues would have been silver like all the others.

Cheers.....

Mike
Offline cookee_nz  
#9 Posted : 11 July 2019 23:59:36(UTC)
cookee_nz

New Zealand   
Joined: 31/12/2010(UTC)
Posts: 3,074
Location: Paremata, Wellington
Originally Posted by: mvd71 Go to Quoted Post
In the immortal words of Bart Simpson "think harder Homer"

If we look at the picture harder, they appear to have heat discolouration. And the previously melted plastic around the mounting suggests heat also. The old Marklin transformers were powerful enough to do this if there was a short somewhere.

From the factory these tongues would have been silver like all the others.

Cheers.....

Mike


Sorry Mike, gonna need a little more convincing than that Laugh

I don't personally see the plastic as melted, looks more like reflection than anything, nice shiney plastic. And that blackening is very uniform and consistent all over, heat blackening usually is more discoloured and uneven than this appears.

And I think the Blue box and vintage holds a clue, it way well have been a short-term production item for reasons unknown, materials, error in the factory etc etc

Let's see who else can dive into their M-Track storage and find any other examples.

Cheers
Cookee
Wellington
NZ image
Offline mvd71  
#10 Posted : 12 July 2019 00:08:31(UTC)
mvd71

New Zealand   
Joined: 09/08/2008(UTC)
Posts: 1,047
Location: Auckland,
My diagnosis is based on personal experience many years ago. And when I zoomed in on the photos I could see the normal silver coloured finish under the blackening. The plastic if heated just enough to soften but not enough to completely lose its shape, will often finish up with a shiny surface look.

Not sure if I still have any examples still at home, but I can take a look when I get home

Cheers....

Mike
Online dominator  
#11 Posted : 12 July 2019 03:04:44(UTC)
dominator

New Zealand   
Joined: 20/01/2015(UTC)
Posts: 754
Location: Kerikeri
I have some with black contacts. [ somewhere ]
Northland. NZ REMEMBER 0228 for ä
Offline kaav800  
#12 Posted : 12 July 2019 13:53:44(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
Hallo folks!!
Thanks for many good replies here.I,am sure there is no heat-issues here the points are NOS items and there has not
been any activity on them.The tracs have no sign of wear,and the contacts i guess will easily been marked if used.

Bet regards kaav800
Offline waltklatt  
#13 Posted : 12 July 2019 15:39:56(UTC)
waltklatt

United States   
Joined: 17/03/2012(UTC)
Posts: 133
Looks like the shiny silvery parts got oxidised with air or some chemical.
The tabs that hold the plastic center rail isolator are also blackened on the top view.

Thanks,
Walter
Offline kaav800  
#14 Posted : 12 July 2019 20:37:02(UTC)
kaav800

Norway   
Joined: 05/07/2019(UTC)
Posts: 11
Location: Rogaland
Hello try to post some more pics,but don;t know if it will work?
Offline mvd71  
#15 Posted : 12 July 2019 22:05:51(UTC)
mvd71

New Zealand   
Joined: 09/08/2008(UTC)
Posts: 1,047
Location: Auckland,
Originally Posted by: waltklatt Go to Quoted Post
Looks like the shiny silvery parts got oxidised with air or some chemical.
The tabs that hold the plastic center rail isolator are also blackened on the top view.

Thanks,
Walter


thats is possible too, i didnt think about chemical reaction.

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