Hi Jason, the plans indicate 1/16" wood for sheeting but I need to remove that, my mistake, the 1/16" wood sheeting is very fragile so I've been doing all my sheeting with 3/32" wood. The ribs are spaced about 2-1/2” apart and if you sheet a wing with the ultra-light balsa you use with foam cores the sheeting will fail, the foam is bracing the wood.

The kits are 3/32" wood too, some say this could be 1/16" but at times it's hard to assemble the wing with the thicker wood due to the deep, relative to thickness, cutouts in the ribs, I would hate to try 1/16” for ribs. If you can get 14 to 16 gram 4”x36” long sheets the wings and stabs will be light, I finished my elliptical wing several weeks ago and they weigh 8 oz each, 226 grams and 229 grams, I'm anticipating 12 oz ready to fly panels when finished with servo. As an experiment I have sheeted several stabs and one wing with 1/16" wood, they are prone to damage before monokoting but hold up well after the finish is on. When I did sheet with 1/16" wood I used the same weight per sheet as the 3/32", this way the wing/stab is sheeted with denser wood and will resist any handling damage.

Earlier in the thread Colin indicated his stab panels finished with servo were 3.5 oz, he used very good wood to achieve that weight. At times it’s very difficult to find the light wood and the cutter this time had two stab rib sheets on the heavier side. This is why I state the finished ready to fly weight without servo should weigh about 3.5 oz, at this weight Colin would have save about an once per panel, 3.5 oz + 1 oz for servo, not his great results of 2 oz per panel.

Hope that helps.

Dave