I model the E.B.T. in Fn3 and plan to model some standard gauge F scale rolling stock.
To avoid the situation in the picture below the EBT devised a way to lift the standard gauge car, remove the trucks and replace with narrow gauge trucks. One standard gauge car (on ng trucks) could be moved in a train. The standard gauge car was placed first in line behind the engine. Special aluminum coupler adapter castings allowed the sg couplers to mate to the ng couplers. Standard gauge boxcars, gondolas, hoppers and tank cars were moved along the EBT.
I have been working on a project to introduce a 1:20.3 model kit for the X-29 boxcar pictured on the right. The kit will be designed to run on either standard gauge or narrow gauge trucks. Some of you may have seen the “volume study” that I displayed at the last ECLSTS. It is BIG.
(http://farm8.staticflickr.com/7370/9733310837_25a5e984c0_c.jpg)