this was awsome, this pickups shows we some flexbility for recent 9v system
i almost order some from you alainneke :p
its good enough for a standard 2878 train wheel RC train holder
but if any chance to have a custom lego train metal wheel which fits technic axle will be more better plus alainneke your pickup stuff then.
i really hope somebody implement this custom train metal wheel in the future,
i believe that wheel plus alainneke's pickups might be the final solution :)
small, tiny, easy to hide and assemble, which can lower our train base for looks more reality.