wheels

I recently upgraded my rolling stock with Kadee metal wheels. At times I lost track of which were the plastic wheels I removed from the metal wheels I was installing. As wheel sets are typically made of non-ferrous metal (zinc, bronze......), they are non-conductive, therefore checking...

As a newbie I try to keep an ear to anything that gives me a clue to improving my stock, most of which has been purchased second-hand. I notice that certain suppliers offer new wheel sets and except for replacement of missing trucks, I wondered if there was another reason for these being...