Hallo Darkbit,
I hope you don't mind me answering you in English, but I am still learning deutsch, and I have a long way to go yet, and don't want to practice right now...
I also have a 2013 slx 8.0 (compact) and from my translation, your problems sound similar to mine. I received my bike mid August, and out of the box it was very noisy in the cassette area. I tried several things before returning the bike to canyon the first after a few days. I did notice that there was side-to-side play in the freehub of the ksyrium, and in the return document I suggested this might be contributing to the noise.
The bike was quickly returned to me (great) but with the noise problem and the two other problems still present (not so great). Canyon also told me that the side to side play of the freehub was within specification. At this point I will say that my wife is Deutsch and we had spent some time and effort doing a correct translation of the issues, prior to returning the bike.
Frustrated, I called canyon and after discussing with a service rep the problems, I was confident that he problems would be resolved on this second occasion. The bike was then returned after a week or so. One of the two other issues had been resolved, but the same noise problem still existed as bad as ever. The frustrating thing is that the noise is not difficult to replicate - just put the bike into 50-21 or 23 and pedal hard, preferably up hill!
In the mean time I had come across another forum thread which suggested the carbon carrier of the dura ace cassette might be the source of the noise. I called canyon again, and the service rep was happy to send out a new cassette, to see if that was the source of the problem. If not, he suggested I should continue to ride the bike with its issues, until the weather got cold and their workshop became less busy. The cassette eventually arrived, but the same noises were still present.
At this point I had made a friend who happens to have a well stocked bike workshop. He has a derailleur alignment gauge, similar to the
Park Tool DAG-2. We fitted the tool and guess what, their was a bad misalignment of the hanger. The measurement was 17mm difference between the 3 and 9 o clock positions at the wheel rim.
Park tool suggest a maximum of 4 mm, and for all I know it might be even less for 11 speed. Now, the problem is that it is definitely not a bent derailleur hanger! Both the hanger supplied with the bike, and the spare had the same issue. We removed the hanger once more and inspected the dropout but could find nothing obvious that would prevent the hanger from correctly mating with the frame. I therefore consider it unlikely that it is a problem with the hanger, and more likely it is a problem with the frame.
I do hope the "fix" is not to bent the hanger straight. I do not think the two part design of the hanger would tolerate this very well, and I do not see it as being a good solution. Every other bike I have ever owned has never had such a problem.
The bike is currently with Canyon for the third time. I am of course hopeful that on this third occasion the problems will finally be resolved (just in time for winter - lucky me!) obviously I am terribly disappointed that the issue had gone on unresolved for so long. It is particularly disappointing that Canyon do not seem to have checked such a fundamentally important detail as is the alignment of the derailleur hanger. This should have been found before the bike was ever sent new to a customer - not by a frustrated customer after unsuccessfully returning the bike for inspection and repair on two occasions already!
Perhaps you are able to gain some useful information from what I have described above. If your English is not great and you would like clarification on anything written here, then pleas let me know and I'll do my best to translate.
