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Offline husafreak  
#1 Posted : 08 October 2021 21:43:46(UTC)
husafreak

United States   
Joined: 09/04/2019(UTC)
Posts: 360
Location: California, Bay Area
I am running my “previously owned” version of this train set for the first time today. My example runs smoothly in both directions but is very power hungry and doesn’t want to run slowly, this is on a 210R oval. Maybe normal behavior for it to slow around the curves and speed up again on the straights. It looks like it needs big curves. The motor car is only slightly warm. Also the motor car (restaurant car) does not have interior lighting but it looks like it should if I read the product description properly? I can’t find an exploded view. Before I pry it open I thought I would ask…
Offline husafreak  
#2 Posted : 08 October 2021 22:56:22(UTC)
husafreak

United States   
Joined: 09/04/2019(UTC)
Posts: 360
Location: California, Bay Area
OK, I found a video on you tube showing the train in very slow operation, but not a good enough video to determine the lighting of the cars. Also by then, after half an hour or so, the train was not wanting to run anymore. So I opened it up and found the driest mechanism I have ever seen, bone dry! I oiled the gearing lightly as per the manual with Labelle 108 oil. I checked the motor brushes and they were not worn very much at all, still approximately 2mm of brush, plenty of life left. I also noted that there is no lighting in the car and never could be, despite Marklin's description. I saw how track power comes to the motor from the other cars, really clever. I cleaned all the wheels and coupler contacts. The motor car wheels were a little dirty, especially in the corners (or whatever you call the part that holds the rail), which may have hurt the electrical contact on the curves. Now the train is running nicely, it can sustain at slower speeds and doesn't seem so power hungry, it maintains its speed around the track. It is amazing what a few drops of oil can do! This is a really cool train, it looks great on the track and finally I have a train that looks good going really fast!
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Offline Mman  
#3 Posted : 31 October 2021 18:01:25(UTC)
Mman

United Kingdom   
Joined: 23/05/2021(UTC)
Posts: 128
Location: England, Guildford
Interested to read of your experiences with the 88712 ICE, I don’t have that version, only have two of the 1985 model 8871 and the later one 88715, If your one is now working well I would say there was no need to modify it, the current conducting couplers are much better than the ones in the 1985 version and that is the reason why it is worth bridging the diodes in the two end power cars of the 8871. Also if you do lose current the one power car of the 88712 will simply stop without trying to drag the whole consist off the track.
As I wrote elsewhere on this site,if my later version should start to misbehave it does not seem possible to modify that version.

You mention elsewhere about Märklin’s lack of traction tyres and I wonder if it is because with the consequential slight loss of pickup they think that the product could no longer conform to the radiation emissions requirements that they print in all the instruction leaflets - just a thought.
ChrisG
Offline husafreak  
#4 Posted : 10 November 2021 17:38:26(UTC)
husafreak

United States   
Joined: 09/04/2019(UTC)
Posts: 360
Location: California, Bay Area
I was able to add an 87714 intermediate car to my set. The 5 car train operates the same as the 4 car set did so that is good news. I was afraid the extra load might be noticeable. One of the current Conducting Couplers (CCC) had the upper and lower leaves of copper pulled away or peeling from the plastic coupler. My first reaction was dismay as the car came from Germany (shipping was cheap to me though) and sending it back would have been expensive. But a tiny bit of UHU applied with a piece of paper and clamped overnight seems to have got it fixed.
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Zme
Offline Zme  
#5 Posted : 10 November 2021 18:55:33(UTC)
Zme

United States   
Joined: 02/10/2013(UTC)
Posts: 412
Location: West Texas
Hello.

I would not expect repairs to this connector would be possible. Glad to hear. I have one which needs this solution.

I think this is a $5 part, if you can find it, and you would likely wait about three months to get it. Shipping would be twice that cost.

Thanks for the idea. UHU is just plastic glue is that correct?

Dwight
Offline husafreak  
#6 Posted : 10 November 2021 21:01:50(UTC)
husafreak

United States   
Joined: 09/04/2019(UTC)
Posts: 360
Location: California, Bay Area
UHU POR is a type of contact adhesive which is very good but there are other brands that are very close. It will not attack the plastic or the copper. In this case we are not going to really allow the glue to dry before sticking it together though so it is best to clamp it overnight. I just used a tiny alligator clip. I put a thin film on a slip of paper directly from the tube, only on one side, trying not to have any globs, then stuck it between the copper and the plastic coupler, I worked it around a bit, pulled it out and clamped the piece, I did the other side the next day. I did not get any globs or glue squeezing out after clamping, it was really applied thin. Then I just cleaned the contacts with a bit of alcohol on a swab. This type of glue stays flexible and can be cleaned, removed, or just softened and left to dry again with lighter fluid so it is pretty stress free to use ;)
thanks 1 user liked this useful post by husafreak
Zme
Offline Mman  
#7 Posted : 20 November 2021 23:18:25(UTC)
Mman

United Kingdom   
Joined: 23/05/2021(UTC)
Posts: 128
Location: England, Guildford
4733BF27-6AFE-4419-9C11-1301D5FC6CC4.jpeg73D5AF4A-3B32-4DFE-9F3E-DA55BAFD83CB.jpegAccording to ‘Collection Märklin Spur Z’ book these are the current conducting couplers used in the 88712 ICE3.
This is a sealed packet of 6 of these couplers, note that one of the couplers has already been parted from its copper track!
There are two holes in the copper part and two pips on the plastic part, these are merely for locating the former on the latter and do not fasten the parts together. Therefore Märklin presumably used some sort of glue to (attempt) to hold them together. I wonder what sort it was.
ChrisG
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