A 26 just isn't going to cut it on this plane. A 35 would be minimum, and a 45 or 50 is even better. Mine came out at 18 pounds, and I balsa sheeted the whole thing. I have a Homelite 45cc on mine, and a smoke system. There is a lot of good information in [link=http://www.rcuniverse.com/forum/m_9173434/mpage_1/key_/tm.htm]this thread.[/link]