I'm working on a CA models 27% Extra which is a really nice choice for this size engine. This is a kit however the flying surfaces come pre sheeted. There should be Edges available in this size however I'm not a fan of the design. Check out AeroWorks as they have a few Edges available. There are few Katanas available and all I'm aware of are in the 100 to 150 cc engine range. There is an interesting thread in the pattern forum about ZN line building a new plane designed by Sebastiano Sylvestri who introduced the Katana S to the TOC.

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