{"id":5872,"date":"2022-12-03T08:46:23","date_gmt":"2022-12-03T07:46:23","guid":{"rendered":"https:\/\/www.rv-7.dk\/?p=5872"},"modified":"2022-12-03T08:53:05","modified_gmt":"2022-12-03T07:53:05","slug":"wings-mating","status":"publish","type":"post","link":"https:\/\/www.rv-7.dk\/?p=5872","title":{"rendered":"Wings mating"},"content":{"rendered":"

Before starting to work on the wings, I still had a little to do on the empennage.
\nFirst, I had to install nutplates on the fuselage for the upper empennage fairing.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

The lower fairing strips gets countersunk for the screws.
\nI fixed them in place with double-sided tape, and countersunk using the fuselage rivet holes as guides.
\n\"\"<\/a><\/p>\n

Then I drilled and tapped the holes for the 6-32 screws.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

Last thing to do on the empennage was to install nutplates on the horizontal stabilizer.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

Next up was getting the wings adjusted and drilling the aft spar bolt holes.
\nAlthough my wing sweep was within range, I wasn’t perfectly satisfied.
\nI had about 3\/8″ forward sweep on both wings.
\n\"\"<\/a><\/p>\n

The culprit was the forward part of the fuselage aft spar, that was hitting the inner wing rib flanges.
\n\"\"<\/a><\/p>\n

I removed one wing at the time, to trim a little of the spar bar.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

After that, the wings were perfectly in line.
\n\"\"<\/a><\/p>\n

\n

I adjusted the wing incidence according to the plans.
\n\"\"<\/a>
\n\"\"<\/a><\/p>\n

Before drilling the aft spars, I installed the flaps to check the fit under the fuselage.
\n\"\"<\/a><\/p>\n

I had to trim a little of the inner upper edges, to keep them from rubbing against the fuselage.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

The fit under the fuselage was nice and flush.
\n\"\"<\/a><\/p>\n

After tripplechecking everything, I drilled a pilothole in each wing aft spar.
\n\"\"<\/a><\/p>\n

I used a piece of alu extrusion as a drill guide, to drill them to just under final size…
\n\"\"<\/a><\/p>\n

Then reamed them to final size and installed\u00a0 the bolts.
\n\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

I had marked lines for the lower gap skin screw holes before installing the wings. I used these to mark and drill the holes.
\n\"\"<\/a><\/p>\n

Next up is to install the flap bellcrank and drill holes through the fuselage for the control rods.
\nI fabricated the rods after I got home yesterday.
\nOh, and I just realized I’ve passed the 2000 hour mark. \ud83d\ude00
\n\"\"<\/a><\/p>\n