Track Question - O scale is a free Model Railroad Discussion Forum and photo gallery. We cover all scales and sizes of model railroads. Whether you're a master model railroader or just getting started, you'll find something of interest here.

I have a new lionel set and it says O-scale on the box. I am looking for more straight track to put a suspended loop around my train room. My question: Is there a difference in O and O-27 three rail track. How do I tell what to get. Thanks in advance, Tom


Drum Driver
The difference is the height and only thing you need to add is a shim under the one to make them compatible. (see artical copied below)

"The two profiles were not designed to be mixed. They can be used together on the same layout, however, if the O-27 track is shimmed by 1/4 inch and the holes in the tubular rails are enlarged to accept regular O gauge pins."

Affiliate Disclosure: We may receive a commision from some of the links and ads shown on this website (Learn More Here) is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section. - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.