When my Lionel 3927 track cleaning car gave up the ghost several months back, I decided to build myself a new one (the 3927 track cleaning car also used to spark a LOT at the pickup roller; which I was not happy about
).
Unlike the electrical engineers that contribute so generously to this forum (you KNOW who you are!
), my projects are built using readily available off-the-shelf items (no designing and building circuit boards from scratch for me...I just dont have the knowledge or experience ).
Anyway....below is my new track cleaning car that I cobbled together using one of my Lionel MPC box cars.
The car consists of an AC-to-DC buck converter, a 12VDC N20 1,000 RPM motor, a mini polishing pad with arbor, a shaft coupler, a bronze collar bushing. add-on Lionel pick-up rollers, stick-on tire weights, silicone wire, various TINY metric screws and nuts, some sheet brass to build the mounting bracket and the box car.
The parts list might make you think it's pretty complex to build, but as you can see the assembly is pretty straight forward.



Here it is in operation. It's a bit noisy but no worse than the 3927 car.
The car does a pretty good job cleaning the track. And no more dreaded sparks!
Hope you like!