Thanks Todd.
The coupler bar is necessary to push it infront of an engine, but I could get around it if necessary.
The wheels for these are special, as are the wheels for the track cleaning caboose, in that the axles are insulated from side to side. Still, I don’t really expect my existing truck to last forever and spare parts are always welcome.
BTW, I spun this over a piece of track just using double sided tape, and it really polishes the rails!!! (http://www.largescalecentral.com/externals/tinymce/plugins/emoticons/img/smiley-cool.gif)
I have it set with the abrasive wheels just above the rail head and a bit of weight gets it right where it needs to be. Really makes the rails shine and hopefully not too abrasive. They make four grades of abrasive and these are the coarsest.
I may just sit a 12 volt battery on it for the weight and use my drywall pole to push it around, or add a dedicated pole with a switch (momentary maybe) to spin it on demand. The difference between using a drywall pad is that this spins at thousands of RPM.
At this point, from the time of the photo, the two brass flanges have been turned down on the lathe to ~0.75". The abrasive wheels are 1" when new so I can wear them down until the trucks bottom out their springs without shorting the rails. Also, the center acrylic mount/spacer (1/4" thick) was replaced with a 0.3" thick piece to accomodate the Aristocraft wheels.