Phil,

yes. The 40 size plan is the only one that I'm aware of. As you can see it has the original markings in the specs section in the bottom right of the plan.

Scalings:

Tsunami 20 (48/58.5 = 82.05%)

Length = 40.75" (Should be 41" but spinner has nose cutoff)
Wing Span = 48.0"
Wing Area = 377 sq in
Stab Span = 20.4"
Spinner & Wheels = 2.00"

Tsunami 10 (43.25/58.5 = 73.93%)

Length = 36.75"
Wing Span = 43.25"
Wing Area = 307 sq in
Stab Span = 18.4"
Spinner & Wheels = 1.75"

The percent scale numbers are the figures you should use to scale the ribs. I plan to omit ribs W6, W8 and W10 from the T10 for a wing with 8 ribs per panel. For the T20 I'd probably go with 9 ribs but spaced differently which would require relofting the ribs or simply band sawing blanks in between root and tip templates and spacing them out evenly.

Also, since the nose rings don't scale to even 1.75" or 2.00" diameters, modify the size of the nose to match that size and obtain the scaling factor increase to augment the width of the formers forward of the wing LE. The additional equivalent height can be added to the bottom of the formers for a slightly less pronounced curve to the top sheet fairing into the spinner but keeping the curvature of the bottom sheeting. The tail of the plane is simply brought together aft of the wing LE former and structured internally as required.

Attached are Greg's ribs for the 74% T10. I'm working on a CAD plan but still a ways to go.

David.