A little drilling, a little dimpling, a little riveting.

Reassembled the nose skin and match drilled the remaining #40 holes form the skin into the the counterbalance tubes. Then upsized them to #30.

img_2761

 

Dimpled the skins for the stiffeners and ribs.

img_2762

Started back riveting the stiffeners to the skins. After riveting the first one I realized that I neglected to trim them to the correct length. It was obvious that they would interfere with the trailing edge extrusion. I’m guessing that the stiffeners are another shared part with the RV-10 thus requiring shortening for the RV-14.

I was able to trim the one I riveted with a cutoff wheel on the Dremel by sliding a thin piece of scrap aluminum under the stiffener to protect the skin. I deburred it with sandpaper. No harm No foul. I trimmed the rest on the bandsaw and deburred on the ScotchBrite wheel.

Had to quit to go watch the Bruins in game 7 of the Stanley Cup Final.

 

Today’s Time (hours): 2.0
Wing Time (hours): 177.0
Total Time (hours): 389.0

 

Attached top rudder tip

I was away in south Florida all last week for work. Good trip but glad to get back in the shop today.

I final-fit the top tip to the rudder with some sand paper. I match drilled #40 all of the holes.

img_2111

I final drilled the holes to #30.

img_2112

I machine countersunk the holes in the tip to fit the dimples in the skin.

img_2113

I dimpled the holes in the skin.

img_2114

I attached the tip to the rudder with the pneumatic pop rivet gun.

img_2115

Et viola…

img_2117

I attached the rudder to the vertical stabilizer on the workbench. I fit the VS tip with sandpaper and match drilled all the holes #40.

img_2118

I used the band saw to cut some foam to back the fiberglass closeout. I test fit the assembly to the VS and used sand paper to gradually reduce the size of the foam until I got an interference fit.

img_2121

I mixed up some epoxy resin with glass micro bubbles to . nice thick paste that wouldn’t run.

img_2123

…and used it to glue the foam into place.

img_2125

 

Today’s Time (hours): 1.5
Empennage Time (hours): 206.5
Total Time (hours): 206.5

 

Sanded and attached horizontal stabilizer tips

Sanded and fit the HS tip to fit. Before I paint the airplane, these will need to be filled and finish sanded.

img_2085

Final drilled #30, dimpled the skins, and machine countersunk the tip.

img_2090

I picked up a pneumatic rivet puller at Harbor Freight yesterday. I used it to set the rivets and attach the tips.  So much nicer the the manual puller!

img_2087

This completes the work on the horizontal stabilizer and elevators. So I’ve moved them to a safe place until I’m ready to final attach them at the end of the build.

Today’s Time (hours): 1.5
Empennage Time (hours): 205.0
Total Time (hours): 205.0

 

Attached right elevator tip

Same drill as as the left tip… Final drilled #30, remove counterweights, dimple reinstall and torque counterweights, countersink tip, cleco, and pop rivet.

img_2078

Tada

img_2079

I used this bit on the Dremel to cut some fiberglass and phone out of the middle of the HS tip to correct the fitting issue I mentioned yesterday. Not a precision instrument. At least not in my hands. But it got the job done.

img_2073

I added a temporary foam block to hold the correct width.

img_2074

I used some masking tape to compress to the correct width. And adjusted to an interference fit with the HS skin.

img_2076

Cut some cloth to fit the inside of the tip.

img_2075

Added epoxy and set aside to cure. Once it’s hard, I’ll remove the temporary foam spacer and backfill the gap I cut with micro at the same time I fill the front side.

img_2077

 

Today’s Time (hours): 2.0
Empennage Time (hours): 203.0
Total Time (hours): 203.0

 

Fiberglass work on HS tips

Jared came by with all of his fiberglass stuff and showed me how to close out the horizontal stabilizer tips. I am so grateful to have someone who built the same plane as well as a couple of others that’s willing to help me out as I am learning to build my first plane. Thank you Jared!

We started by attaching the elevators to the hs on the bench. I drilled and clecoed the elevator tips that I had trimmed and fit yesterday to the elevators. Then we trimmed and fit the HS tips to the horizontal stabilizer. We drilled and clecoed them in place and trimmed the trailing edge to match the profile of the leading edge of the elevator tip with a 1/8″ gap.

img_2062

Then we trimmed and fit the HS tips to the horizontal stabilizer. We drilled and clecoed them in place and trimmed the trailing edge to match the profile of the leading edge of the elevator tip with a 1/8″ gap. We removed the tips and cut out a foam backer and sanded it to fit into the HS tip.

img_2061

 

I traced the inboard edge of the tip on some glass cloth and cut it out with shears.

img_2064

 

We used West Systems epoxy with the fast hardener. First we mixed up a batch of epoxy and incorporated glass micro bubbles into the resin to make a thick paste that we used to glue the foam in place.

img_2063

Then we mixed up another batch of epoxy and laid the glass cloth over the foam. I used a brush to impregnate the cloth with resin and set it into place. It’s rare that I get a picture of me actually building my plane! Photo credit to jared. I had the mask on to work with the micro bubbles. it’s powder fine and super light so it disperses into the air easily and probably isn’t very good to breath.

img_0605

And here are the HS tips setting up. Once they’ve cured I’ll fill them with micro and sand them to match the profile of the leading edge of the elevator.

img_2066

 

Today’s Time (hours): 4.0
Empennage Time (hours): 200.0
Total Time (hours): 200.0

 

Trimmed and fitted the elevator and rudder tips

As much as I enjoyed looking at the aft fuselage with the tail feathers attached progress must continue! I remove the rudder, elevator, vertical stabilizer and horizontal stabilizer. I trimmed and fitted the elevator and rudder tips using a Dremel with a diamond cutting wheel, files and 60 grit sand paper.

img_2057

img_2058

I also received the molex pins I ordered from Mouser so I fixed the wire I accidentally yanked out of the aft wiring harness molex connector.

img_2059

Tomorrow Jared will teach me how to fiberglass and we’ll close out the VS and HS tips. I’ll need to drill, dimple, countersink and rivet/screw the rudder and elevator tips as well.

Today’s Time (hours): 3.0
Empennage Time (hours): 196.0
Total Time (hours): 196.0