Almost any of the newer, heavy models of diesels with central can motors and flywheels driving eight or more wheels will cope: my own usual choice is a pair of Heljan class 33s topping and tailing the track cleaning train. I can use just one of these locomotives, but if a leading locomotive encounters a dirty stretch of track before the track cleaner can get to it, it stands to reason that the train might grind to a sudden stop.
I did put up a video on YouTube showing my first runs with the CMX track cleaner, with both one and two locos at different times.
I did put up a video on YouTube showing my first runs with the CMX track cleaner, with both one and two locos at different times.