This Scale Model of a Cessna 140 flies well. I flew it at a meet of the Cleveland Free Flight Society in Lorain Ohio in September 2012, where I took the picture of it flying by the tree tops on the Home Page.  I built it from Dare Design Kit 116FS in 2011. The kit  is still available through Brodak (https://brodak.com/dare-cessna-140.html). and is about 1:15 scale. Full scale data may be found at  http://en.wikipedia.org/wiki/Cessna_140 .  The model has a 26 inch Wing Span, and wing area is 104 Square inches.  

 Airframe weight was 42 grams and motor weight 5 grams for 47 grams total.  This includes about 4 grams clay in the nose to adjust center of gravity.  Wing loading is about 2 ounces per square foot.  Motor was 2 loops (4 strands) of 1/8 inch wide FAI rubber 15 inches long.  Rubber makes up 11% total weight.  An 8 inch diameter Peck silver propeller was fitted.  Winding to 800-1000 turns gave flight times of 1/2 minute up to 1 minute.  Landing gear attachment is a bit weak, needing repairs occasionally.  Elevator warps needed some attention.  While flight performance was satisfactory for fun, it would have been better if built lighter.