RE: 4-Star 60 Bi-plane
Top wing is set 1 1/2 ahead of the bottom wing. Both wings are swept back 3/4 inch per side. Distance between wings is the same as the chord. Engine is 75 Tower 2 stroke, AUW is 11 pounds. She is a bit heavy, but she flies nice. It tends to 'search' at high speed, but lands like a dream.