Hi again - I have found some time over the past weekend and replaced the motor.
Long story short: That did the trick!!!Well of cause the bike still refuses to charge, what this thread was mainly about, but at least now I have proper acceleration. I did not have the time at the end to do a proper test ride, but at least I rode 10kms. With the old motor that distance was already enough to let the motor temperature reach 100degC and the controller temp into thermal throttling above 70degC. I had a look at the log file - the controller temp stayed around 40degC and the motor did reach 60-65degC. Plus, the bike now reaches speeds of circa 110kmph on speedo - and I am a big man! It would probably have gone faster but the traffic did not allow that.
I have taken some pictures, this time even with an IR camera. Upload here is restricted in size and with an iPad it is possible but not too easy to reduce picture size, so if you are interested please
visit this German forum only for the pictures.
I cannot really express the pride I fealt when doing the test ride! After so many tries and replacing/repairing all key components like batteries, VCU and controller it was at the end the motor - the one component that I suspected least. Well, I do have the fantasy that in fact it might even be the encoder that is somehow misaligned. The bike was engaged in an accident but the scratches indicate that it simply was dropped with no hit to anything but the ground. Maybe that was already enough. Or maybe it just happened somehow accedentally. I will probably nether know this
