The 44 tonners have/had Caterpillar D-17000 diesels, usually rated at 200hp each. The 45 tonners were Cummins (NH-150) powered, at a hp rating of around 150 per diesel. I have seen both chain drives, and side rods, on the 45 tonners, as well as side rods on 44 tonners. I can't say for sure, if the 44 tonners were originally equipped that way, or had been re-trucked.
Union agreements of the era, mandated an engineer, and fireman, on all locos over 45 tons and heavier. The 44 tonner was an attempt, by certain carriers, to circumvent the agreements, by creating a "one man" loco. Great concept, but as anyone who has run one (or most locos under 100 tons) knows that being able to move around 6-10 cars at a time, not the fastest way to get the switching done. Cool little locos, I am still searching for an early version, to purchase, as a restoration project. Those little Cat D-17000 series diesels, were okay engines, and the ability to move about with just one running, was another "bonus" for a loco that had a hard time earning it's keep, on the rosters of the class ones. Know of a blunt-nosed version sitting in the weeds somewhere? The earliest ones have the intakes for the radiators, on the sides of the noses, instead of on the front of the noses. Have been trying to chase one down, for the last 5 years.....
Traveling Engineer, Coast to Coast, Border to Border.
Any Train, Anytime, Anywhere.....