What is the minimum radius for AZL trains?

The standard minimum radius curve for AZL locomotives and rolling stock is 195mm (7 11/16″).

There are some exceptions:

The AZL Brass Challenger steam locomotive will operate on 195mm radius curves, but for best operating results, we strongly suggest a minimum of 220mm radius.

The AZL Brass Big Boy steam locomotive will operate on 220mm radius curves, but for best operating results, we strongly suggest a minimum of 245mm radius.

The AZL RDC locomotives will operate on a minimum of 160mm radius curves, but for best operating results, we strongly suggest a minimum of 195mm radius.