Step 9: Select one each of the W-1208-L Nose Ribs and W-1208-R Ribs with the aft and forward trimmed flanges. Dimple the rivet hole locations as shown on page 15-02 Figure 4. Final drill #19 the center nutplate holes as shown. Dimple the install three nutplates on each of these nose ribs.
Builders note: I drilled to #40 & deburred the rivet holes before dimpling them. Also, dimpled the nutplates.
Step 10: Select one of the three untrimmed W-1208-R Nose Ribs and dimple the rivet hole locations for the two forward nutplates as shown in Van's Aircrafts plans on page 15-02. Final-Drill #19 the center nutplate holes. Dimple then install two nutplates on the nose rib.
Builders note: Again I drilled the rivet holes to #40 before dimpling.
This completes page 15-02 of Van's Aircraft RV-12 plans. The nose ribs are now ready to install so the next big job is getting the main ribs ready.
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