Super Drifter XL with Rotax 912 - ByDanJohnson.com
Rotax 503 - Wikipedia
Kitfox Ultralight Aircraft, powered by Rotax 503, 2016 - YouTube
Fly Rotax - #themoreyouknow: In the 70s North American companies tried to use the ROTAX snowmobile engine in ultralight aircrafts, prompting ROTAX to develop it's own aircraft engines in record time! #100yrsrotax #