Although it sounds pretty dry, one of the most important steps in setting up the airplane to fly well is accomplished when the wings are in place against the fuselage. The sweep, the angle of incidence, and dihedral are all set, and fixed, by ONE bolt on each wing. The forces on the bolt are substantial, so it's position must meet very stringent parameters. This is an absolute "measure twice, drill once" event.
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| This is the final, and very satisfactory result. Bolt centered in the rear spar tab, 6/8ths from any edge |
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| We measured sweep with four weights hung from the leading edges. All were co-linear on a chalk line |
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| As seen here. Not shown are measurements from wingtips to aft fuse centerline. We were within 1/8th inch. Pretty good. |
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| Angle of incidence requires a measurement, set up as above, on a three inch block at trailing rivet line |
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| Close to perfectly level |
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| simultaneously checking that fuse is level (fore/aft and side/side) |
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| Yup! |
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| Afterwards, for fun, we installed the control sticks |
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