Saturday, April 19, 2014

Vans Aircraft RV-12 Airplane Build, Section 42C: Skyview Update (part 8) & Section 37 Fuel Tank

Reference for this entry: pages 42C-18, 37-08, 37-09; 6.5 hours

Today I will finish up more of the Avionics wiring and the fuel tank venting system on the RV-12.

Reference: page 42C-18

Step 1: Insert the wires from the GPS into the 9 pin Male connector asshown on page 42C-18 figure 1.

Step 2 & 3: Route the GPS wires through the cushioned clamp near the cooling fan mounted on the Base Panel. Add the Backshell and label the GPS connector. Install onto the Control Module.

This completes page 42C-18

Reference: page 37-08

Step 3: Remove the filler neck.

Step 4: Rivet the Vent Bracket to the aft side of the Bulkhead.

Steps 5 & 6: Install the Adel Clamp and fabricate the B & C Fuel Vent Lines.

Step 7: Assembly the Fuel Vent Air line adapter.

Builder's note: By cutting the plastic line as a at an angle it was much easier to pull it through and make the adapter.

Step 8: Assembly the fuel Air Vent.


Step 9: Temporarily install the fuel tank Assembly. Don't install the fuel lines at this time.

Step 11: Install the blind rivet into the bottom tail skin.

Step 12: Install the Fuel Vent Air Line. Install the fuel air line to the blind rivet.

Steps 13 - 15: Install the Fuel Vent Line. Mark the Fuel Line approximately 1/4" from the bottom of the airframe skin. Remove and bevel the vent on the forward side. Reinstall the Fuel Vent Line.

This completes page 37-08.

Reference: 37-09

Step 1 & 2: Creating a seal between the fuselage skin and the Fuel tank Filler neck. Builder's note: I didn't reinstall the fuel tank lines at this time. Instead I put a layer of packing tape over the area the filler neck contact the turtle deck and then coated it with mold release. Also covered just the filler cap with packing tape. Next covered the flange of the filler neck with fuel sealant, reinstalled the filler neck and let it cure before removing.

This completes today's work on the RV-12 airplane.