The following query came through on our Facebook page
My "vehicle" has no wheels, so I have mounted a TT scale railroad truck on the underside of the vehicle. My concern is the metal train wheels will "scratch/leave rub marks" any surface paint as we see the sliders do. I am planning to use thin, clear acrylic as a top surface, with a dirt road surface painted on the bottom/track side of the acrylic and just paint the top of the acrylic with a matt finish to dull the shine. Do the magnets in the track and/or the track itself rub against the bottom of whatever ones uses as a top surface? The question that popped in my head is if the magnets on the vehicle will pull the track magnet up to run along the bottom of the road surface material, in essence defeating the purpose of using paint on the bottom side.
My Reply was
Tracking from tyres is common unless they are rubber, however if you mount magnets directly onto the chassis so they just clear the roadbed, they will still be pulled along by the track magnets but will not leave a mark on the roadbed. The more coats of matt finish will help and also a light rub over with steel wool will smooth the surface without removing the protection - it is like sanding it down!
Clyde has been involved for many years with the Magnorail system having initially built his own layout "Echo Lakes" featuring two concepts using the Magnorail System. In 2019 he rebirthed his layout as Crater Lake featuring four Magnorail circuits plus an Ho3 train line around the perimeter which is now the Magnorail flagship for exhibitions.