Look over in the scratch builder's forum

http://www.rcuniverse.com/forum/m_3556941/tm.htm

Intertwined with the 50cc size build is a 120 sized one as well. It came out somewhat porky at 12lb+ with an MVVS 160 gas engine, but I have looked at the plans and there is significant weight to be removed from it if you sub a lot of balsa for lite ply and enlarge the lightening holes everywhere. Between that and using a 1.40-1.60 glow engine you should get well under 11lb, which would be fantastic with an OS 160 on it.


Mark