@Jim Waterman posted:Bob - overhang is dependent on the radius - for the 72 diameter it is just at 3" from outside of the rail to farthest overhang on ends of the loco.
Jim
Jim,
Understood. That said, I think your GG would have hit some trackside accessories located next to the track on more than one of the SGMA Trainfest layouts I managed between 2012 and 2017. Worse, as Kirk points out it might hit other Standard Gauge trains on SGMA's STD87 mainline
For example, checkout 3:20 into this video of SGMA at Trainfest 2014: https://www.youtube.com/watch?v=x7DIBFLi1zo
Bob