H-A-H Hi I built a little stick which I kit- bashed and turned into a bi-plane and used the TD .020 that flew it great. I used the std 4.5 x 2 .020 prop and that flew it fast and wild- a real handfull, but also a real blast. I also had to make the rudder larger to get more control but the throws are not large ( rudder and elevator only control ). I also used a extended tank of about 1/4 to 1/3 oz which gave me about 4 to 5 min. of flight time. I had landing gear at first but took it off- it flew better w/o it. But just go for it and have fun. Have someone else throw it for you the first time and hang on Dale