Army Alco's at Altoona

[kelticsylk]

Alco MRS-1, 1955

[seusscaboose]

And same family of locos in mid 80's

https://www.google.com/search?q=sbvr+cass&site=webhp&source=lnms&tbm=isch&sa=X&ei=TX-XUpPtNMH8oAS48YCIDw&ved=0CAgQ_AUoAA&biw=320&bih=416&dpr=2

[nkalanaga]

I have heard that the MRS-1 also ran on the D&RGW narrow gauge.  Since they had variable-gauge trucks, I wonder if one of these was also in Colorado?

2 of my freelanced Nn3 Alcos inspired, in part, by the MRS-1:

[S Class]

Looks like our 45 class
http://en.wikipedia.org/wiki/New_South_Wales_45_class_locomotive

[davefoxx]

Reminds me of the U.S. Army's Alcos that could have been seen around Fort Bragg and the Cape Fear Railway in North Carolina many years ago.

DFF

[nkalanaga]

Tony:  It may very well be your 45 class, or an ancestor of it.  Alco built a lot of export units that looked like RS-1s, 2s, or 3s, but with the low cab.

All I did to my units was lower the cab on an Atlas/Kato RS-3 shell and put it on a MT Z SD40-2 chassis.  The truck centers are almost perfect, and the wheelbase is very close to the 4-axle RS-3, but it would be nice to have an Nn3 version of the RSD truck to fit the Atlas chassis.  The shells are packed with lead sheet and putty, so they'll actually out-pull the original model.