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Sturla design

Aeronca  chief 11ac
scale                1/4
wingspan         2730mm
Fuselage         1600mm
weight              6.5 kilo
engine              Saito FA-80 Four Stroke Engine

 https://www.flickr.com/photos/aeronca/albums/with/72157630183311660

PBY Catalina
wingspan        3965mm
Fuselage        2435mm
weight            22 kilo
Engine           2 x  26 ccm or electro

 https://www.flickr.com/photos/sturla/albums
 

DC 3
scale                1/8
wingspan         3600mm
fuselage           2480mm
Weight             18 kilo
Engines           2 x 26 ccm   or electro

https://picasaweb.google.com/107826444081072659924/18ScaleDouglasDC3C47