@MTN posted:Your Flyer 4-8-4 for 3 rail operation wish can come true - Gilbert made 3 rail O gauge trains prior to WW2 which were built to 3/16ths scale proportions, and the UP 4-8-4 was one of their nicest pieces. They look especially nice pulling a string of Marx 3/16ths O gauge tin litho cars. Here's a 572 3 rail UP 4-8-4 in action:
I have my own O Gauge Flyer 4-8-4 that's under repair at Brad's Train Repair in either Chesterfield or Mt. Clemens, Michigan. I wonder how long that's taking since the engine and matching tender themselves are scarce.