1968 Ski-Doo 600 T'NT
First Rotax twin set course for future sleds, industry
Back in the day, one-lunger snowmobiles were the norm and horsepower was something folks associated with, well, horses.
Ski-Doo, marking its 50th year this season, changed things up in 1968 when it powered up the industry with its T'NT 600 for racers and its first vertical twin, packing 35 horsepower. The engine also was Rotax's first that was specially designed for a snowmobile, as earlier powerplants were adaptations of industrial engines, mostly water pumps.