Share Facebook Twitter LinkedIn Pinterest Email Oooohh that Moki sound! Andrew Griffith Featured News Comments We love radial engines and this 50% Gee Bee racer with an enormous Moki radial engine is unimaginable! Over a 12 foot wingspan the Moki 400cc is 5-cylinders and swings a 38-inch propeller. [Source Link] Moki Oooohh sound