That there is a MAS 18x6 Classic .(Meant for the likes of a 1/3-1/4 scale cub.) I'm hoping to have some video if the weather permits. We've been flying in -20/25mph lately, except for today which was fantastic. I hope Friday's maidening will be just as fine a day! BTW the engine has 3.7 hp listed on the tech sheet. We'll have to see just how much flutter this here aeroplane can handle. Wish me luck! Peace