Howdy Mark,

Indeed, the TWMRC used extensive narrow gauge on the layout, successfully modeling the prototype operations of the D&RGW narrow and standard gauge transfers. We had a series of two parallel tracks (one for standard gauge and one for narrow gauge) where narrow gauge cars were spotted next to standard gauge cars to make the transfer. We used dual gauge for the track for flexibility of use, but standard and narrow track could have been used. The narrow gauge transferred cattle, oil, and minerals to standard gauge cars and assorted items back to the narrow gauge.  ProTrak managed the transfer and it worked well.  The author of ProTrak, Jim Moir added all the features to the program to allow both standard and narrow gauge operations.

I'll bump this to Jim for comment about changing AAR codes.  Are you modeling 2 foot gauge?  Let us know if we can help with the narrow gauge stuff.

Have fun,

Mike C

>My main thing is that my prototype is small.   Each carriage can carry no more than 24620lbs or 12.32 tons which is way smaller that any option that I could identify in the options avaliable.  

The bearing sizes and their capacities are based on AAR (Master Car Builders) practice and vary by the "Built Date" selected for the car.  (e.g. Three different sizes on A bearings, depending on whether one is before 1890, 1903 or 1920.)

Howard set me straight on this at the third ProTrak Weekend for his 1903 era.

It certainly would be an addition to the program (ProTrak) to add other capacities for narrow gage cars.  This is, if you selected "Narrow gage" for a car, the bearing-capacity dropdown would show relevant "gross weighs on rail".

Easy to code in.  I just need some advice on what the relevant gross weights are.

Thanks,

         Jim