On my RV-3B, I used Howe Fittings, the wooden gadgets, to help with the shape.
These changed the angle of the tiedowns and gave a better shape.
If the leading edge portion of the rib starts to crush down, you can use supports like these. These were on the outboard part of the wing, but the same would work for the tanks.
Are you using the proper size spacers behind the tank baffle? I cut several blocks out of MDF and had to experiment with different sizes to get the skin just right.
Yes I had to experiment with that.
__________________
Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
This pic shows the amount of leading edge pre bend from the factory with my RV 3B wing kit. It played quite nicely without undue force. If (as you say) you are starting with flat stock then a substantial pre form of the leading edge will make it whole lot easier. Hopefully your predrilled top holes with still line up.
Russell
Thanks Russell. My skins are only at 90 deg. That?s the big difference. I wrestled with them some more and I think I have it now. Thanks and thanks to all who responded especially with pictures. Makes a huge difference.
__________________
Scott Black
Old school simple VFR RV 4, O-320, wood prop, MGL iEfis Lite
VAF dues 2020
Instagram @sblack2154
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