I have one Ross O72/O54 curved switch on my otherwise all Atlas track layout. Like has been mentioned before the Atlas curved switch has a long dead spot so I decided to use a Ross switch for this application. It is mated to Atlas track and mounted on Rossbed as can be seen in this picture.
Unfortunately I've had to do a lot of work on the switch. Some engines derailed on the switch because the gauge was too tight. To fix it I had to remove a few spikes and carefully bend the outside rails to widen the gauge slightly. The moveable rails were too tight and had to be slightly bent to widen the gauge. After doing that I didn't have any more derailments, but had shorts when a few engines and cars would pass through the switch. The center rails leading to the frog had to be ground down at the ends to eliminate the shorts as the wheels passed through that area of the switch. You may be able to see the ground down rail ends in this picture.
After the modifications were done I don't have any problems with derailments or shorts. Diesels and cars move through the switch smoothly, but scale articulated engines bounce through the frog. I've figured out how to change the track plan so I can replace the curved switch with an O54 switch so I plan to do that over the winter.
Ken
