11. In 1990 he joined the RCW588, which was powered by a Wankel engine . 12. The Wankel engine has a 50 % longer stroke duration than a piston engine. 13. The Norton Wankel engine was further developed at MidWest aero-engine. 14. The Wankel engine is actually a variable-volume progressing-cavity system. 15. Diamond Aircraft state that the technology using Wankel engines is scalable to a 100-seat aircraft. 16. Diamond aircraft state that the technology using Wankel engines is scalable to a 100-seater aircraft. 17. Wankel engines are fitted to many unmanned aerial vehicles.18. On September 24, 1974, Ed Cole postponed the Wankel engine , ostensibly due to emissions difficulties. 19. The "'Wankel engine "'is a type of internal combustion engine using an completely different designs. 20. But unlike the Xplorair, the Moller skycar has rotating ducted fans powered by Wankel engines .
