original SIG Rascal 110 was to little for me , and I start to build a 141 inch (3600mm) wing span "my own" RASCAL.
exactly, my plane only "looks like" RASCAL, because a construction is fully independent of SIG kit's.
it has a 2 spar wings, detachable 1550mm consoles and non-detachable 500mm middle-plane.
target was a 6-6.5 kg all-up weight at electric version, or 8-9 kg 50cc gas version.

here some pictures of building process (electric version):

http://forum.rcdesign.ru/blog_attach...3&d=1263939318
http://forum.rcdesign.ru/blog_attach...5&d=1271531039
http://forum.rcdesign.ru/blog_attach...7&d=1271528665
http://forum.rcdesign.ru/blog_attach...1&d=1272026029
http://forum.rcdesign.ru/blog_attach...8&d=1272029578
http://forum.rcdesign.ru/blog_attach...5&d=1272222227
http://forum.rcdesign.ru/blog_attach...8&d=1272631357
http://forum.rcdesign.ru/blog_attach...7&d=1273321645
http://forum.rcdesign.ru/blog_attach...4&d=1275327040
http://forum.rcdesign.ru/blog_attach...3&d=1279732412
http://forum.rcdesign.ru/blog_attach...5&d=1279910591
http://forum.rcdesign.ru/blog_attach...5&d=1281094941
http://forum.rcdesign.ru/blog_attach...6&d=1281207852

now I need just to complete a covering and install a motor and radio gear.
approximated all-up weight is 6.2kg