The testing of Brush 4s continues, I am now up to number 26. Most of the latest ones have been Lima and Hornby. Only one has been sidelined for more attention, runs nicely and will shift a train of ten but at a snail's pace. I cannot see what is wrong so I suspect it is either a weak magnet or a damaged armature.  Others have needed wheel cleaning and motors oiling. I had one that kept losing traction, wheels were spinning/slipping but a drastic reduction in speed on some parts of the circuit. I
    • Craftsmanship/clever
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