Chuck,
I found what I was looking for.
In the February 2006 Model Railroader, pg. 46 is an article on "Bending the Iron". Talks about all kinds of switch motors, rods and targets and how to build them. It is based on HO, but the methods can be used for other scales.
Also is a special issue by Model Railroader, "How to Build Realistic Layouts", is an article on pg. 34, "Moving Targets for Switch Stands". Again it is based on HO, but can be used for other scales as well.
Have fun with these.
B-) & :x