Help needed on using RR-Track v5.0 with Flex Track

That's what I did for a while.  It's a real PITA.  I ended up using the tool that cuts to length a stock curve.

doug

Use the "Custom Radius Curve" curved section option. Just chose a radius (that's HALF the "O" number) and the arc, then RR-Track will do the rest. If the section is too long, cut the arc down -- i.e., instead of a 22.5 degree arc at 120" radius (O-240) do an 11.25 degree, then copy/paste it onto the first one.

When I do design experiments, I'll often make custom sections in several sizes, then copy/paste them into the layout design.

If you're trying to fit a curve between to points, hold the alt key, press and hold the right mouse button and drag between the end points you want to connect. The box will appear when you let go and you select "General Curve." When you first open RR-Track, it's a good idea to go to the setup wizard, click on "Flex Track" and choose "Radius Curve." This will make cleaner curves of broader radius.