This is my first layout.

Jerry, I can’t answer that from experience, but I suspect others might tell you that you’re asking for trouble. I’ve read of folks running equipment through O-54 curves even though they’re marked O-72. I can see how the curved switches might work better, but I can also see how they wouldn’t. Many modelers with such equipment relegate that equipment to the outer main and live with the limitations.

On the file question, I’m beginning to think the file has to be shared via RailModeller Pro to their cloud service in order to be accessed by the app I mentioned. Here’s the article, assuming you have that version:

https://www.railmodeller.com/n...mmunity-layouts.html

Here’s a tutorial that might lead you to learn how to display track labels.

https://youtu.be/_li-ov0sKMI?si=OVQvVBFeKPUuPh3X

I think any large steam engine with a fixed wheel base will have a problem with O54 curves.  All other cars and diesel engines and small steam engines should go through.  HOWEVER, the increased overhang of the larger models can be a problem which you'll need to monitor.  You'll find that overhang discussions have almost exclusively dealt with the spacing between adjacent curve tracks leading to collisions.

In your yard as long as you monitor the movement of these long models you should not have a problem.  On all your parallel storage tracks don't crowd the switches.  Leave room for the cars to straighten out.

Jan

@Gerard Colf posted:

Dave, I have unfortunately or fortunately had to use 0-54/0-72 curved switches in several places on this layout trying to make the track arrangement work. Not being familiar with this switch, am I going to have problems with engines and  21" passenger cars, that require a minimum  0-72 curve? Thank you for the information on finding files on MAC.

Lionel 21" passenger cars require an O54 curve, however, some locomotives that specify O72 curves will most certainly not run on O54 curves.

I have successfully run 21" passenger cars on O54 tubular track.  They run well but look awkward.

I changed all of the 072-054 curved switches to 096-072 curved switches except the one going into the center area. Tried to use the 096-072, just could not make it look right on paper. I have an additional foot on the back wall stretching the center section a small amount and also giving more aisle room on the left. This may give me enough room to allow that exchange