About the GMD-1's
GMD stands for General Motors Diesel. Originally owned by the Canadian National Railways, the GMD-1 used by the CC&PA Railroad is rated at 1200 horsepower. It weighs in at about 239,780 lbs or about 120 tons. It is 55 feet long and can reach a maximum speed of 65 mph.

Rebuilt in 1986 by CN (Canadian National) and redesignated the 1151, the 1151 and three other sister units were purchased by Robbins in February of 1999, two for the Dardanelle & Russellville and two for the Ouachita Railroad. You will notice in earlier photos before the unit was repainted, there are the letters O-U-C-H stenciled on the nose.

The following info was taken from http://lrs.railspot.com/r-ouch.htm...

"The GMD1 is a 1200-horsepower light roadswitcher. These particular units — CN 1143, 1151, 1155, and 1159 — were built with A1A trucks, but were latter equipped with Flexicoil B trucks from retired GP9's.
 

GMD 1151
1151 GMD · GMD1 · serial no. A1748 · order no. C262 · Oct 1959

* built as Canadian National 1051 with A-1-A trucks
* re# Canadian National 1151 when equipped with B trucks
* to Ouachita 1151 in Feb 1999"


The journey to Youngstown was not an uneventful one. The following APB was put out to railroad buffs in March of 2001, when the 1151 was lost for a couple of days. 

 

From Don's Rail Photos Website,

1151, GMD1m, was built by General Motors in October 1959, #A1748, as Canadian National 1051, Class GR-12w. It was rebuilt with four wheel trucks in 1986 and renumbered 1151. In February 1999 it was sold to the D&R and assigned to the Ouachita RR as 1151. In March 2001 it was shipped to Pennsylvania and relettered.

GMD 1155
From Don's Rail Photos Website,

1155, GMD1m, was built by General Motors in October 1959, #A1752, as CNR 1055, Class GR-12w. It was rebuilt with four wheel trucks and renumbered 1155. In February 1999 it was sold to the D&R and was transferred to CC&P in June 2002.