So maybe finally I have made some progress in identifying the problem and it seems the point does have a problem. I spent some time testing with the voltmeter. First I discovered that the point appears dead from the plastic frog (?) on the right of the photo through to the end of the point, on the left. This was rectified if I switched the blad a couple of times. However this didn't help the Rugen get through the point. It stops, and that section goes dead again.
However then I discovered that if it stalls on the point, and then I use the voltmeter and touch the end of the blade (as in the 2nd photo), the Rugen shoots off!
So there is a problem with the blade, as several above have suggested. Is it fixable?
But back to the Rugen. Compared to all my other locos, it is much more "fussy" about the state of the track in certain places, and generally seems uncomfortable at lower speeds. (and always has done). It is the only loco in my small stable that does not have pickup skates (apart from the old Wismar railbus, which has a long wheelbase and pickup to both sets of wheels, so is very steady. Do all the modern Rugens have this pickup set -up? Do any other popular models? And do people generally find this set-up OK compared to the ones with plungers? (I guess so, as I read of lots of happy Rugen owners...)

However then I discovered that if it stalls on the point, and then I use the voltmeter and touch the end of the blade (as in the 2nd photo), the Rugen shoots off!
So there is a problem with the blade, as several above have suggested. Is it fixable?
But back to the Rugen. Compared to all my other locos, it is much more "fussy" about the state of the track in certain places, and generally seems uncomfortable at lower speeds. (and always has done). It is the only loco in my small stable that does not have pickup skates (apart from the old Wismar railbus, which has a long wheelbase and pickup to both sets of wheels, so is very steady. Do all the modern Rugens have this pickup set -up? Do any other popular models? And do people generally find this set-up OK compared to the ones with plungers? (I guess so, as I read of lots of happy Rugen owners...)

