The RFC train garden has a new standard scale layout this year as part of our holiday display, but it turns out parts of the track are not easily accessible for cleaning, and dirty track has become a recurring problem. I was unable to find a commercially-offered standard gauge track cleaning car, so I decided to source a spare chassis and try to make my own.
Which leads me to my ask: does anyone know of a suitable track cleaning mechanism (pad, spring, weights, etc.) that could be mounted on a donor chassis to clean the whole track while in operation? I suspect an O scale mechanism could be adapted (with wider pad, etc.), and I'm not adverse to DIY solutions. What say you (extra points for real life experience)?