Is Rotax a good engine?
Over two decades later, rotax engines remain the most popular line of engines for light sport and ultralight aircraft, and the second-most-popular (after lycoming engines) for u. s. experimental / amateur-built (e/a-b) aircraft. Rotax is the brand name for a range of internal combustion engines developed and manufactured by the austrian company brp-rotax gmbh & co kg (until 2016 brp-powertrain gmbh & co.