I just purchased one of these myself 2 days ago thinking the three cylinder radial saito 90cc gas would be plenty (turns a 24x10 prop) but now I see the firewall calling for a da85 ??? I wanted something with lots of wing because the saito weighs over 7 lbs but I am wondering how much tail weight I might need . . thanks for all the great pictures , kind of took a gamble ordering it as I could find little information about it . wish mine had the 4 piece wing , it's 2 piece . Would have been so nice to leave the wheels on the plane . . anyway keep up the great work . cheers Roger