Monday, July 11, 2011

Vans Aircraft RV-12 Build, Section 17: Wing Skins (part 5)

Reference: page 40-02; 2.5 hours

This entry continues the instillation of the RV-12 lighting kit while building the aircraft wings.Some of the steps are modified from Van's Aircraft's plans as I have access to the back of the light because the top skin has not been installed. Note: While working with the plastic lens make sure the room is warm (+ 70 degrees works well.) The high temperatures lessen the chances of the plastic cracking.

Step 2: While holding the landing light lens tight against the Outbd Wing Skin. Match-drill #30 using a plexi bit and cleco the eight holes in the outbd wing skin surrounding the landing light cutout into the lens.

Step 3: Mark the inbd and outbd edges of the landing ight cout out onto the Lens with a removable Vis-A-Vis marker. I used masking tape.

Step4: Remove the Lens. Final-Drill #27 using a plexi bit the holes in the lens.

Step 5: Trim the Lens using the dimension in Figure 1 on page 40-03 of Van's Aircraft's plans for the RV-12. Start by trimming within 1/32 inch of the final shape with an abrasive cutting disk then finish by sanding.

Step 6: Final-Drill #27, deburr, then dimple the eight holes in the Outbd Wing Skin surrounding the landing light cut out for the head of a #6 screw.

I found out later that it was impossible to get the lens in through the cut out without trimming it more than is pictured above.