Primed everything and started assembly

 

Wiped everything down with acetone and then shot primer. I did the spars first, then the ribs in two batches, and finally all the other small parts.

 

 

Riveted the flap hinges and hinge ribs to the ribs. I started using the squeezer but it couldn’t reach most of the rivets so just switched to the gun and shot the rest of them.

 

 

Assembled and riveted the the torque tube brackets and riveted them to the inboard ribs.

 

 

Clecoed the ribs to the spars and reinstalled the AN3 hardware and torqued everything down. I also installed the snap bushing in the systems holes in all the ribs. Many of them were a bit loose. I’ll have to give some thought on how I want to resolve this.

 

 

Today’s Time (hours): 7.0
Wing Time (hours): 52.5
Total Time (hours): 263.5

 

Rinse, repeat, right spar complete

Match drilled the J channel to the spar.

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Machine countersunk the nutplate attach holes.

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Riveted in the nutplates

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Countersunk the screw holes.

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Machine countersunk all the skin attach holes.

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Riveted in the nutplates at the tip end of the spar.

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Riveted the doubler to the spar and installed the tank attach nutplates.

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Final drilled, deburred, scuffed and primed the aileron bell crank brackets

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Installed and torqued the aileron bell crank brackets.

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Right spar done!

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Today’s Time (hours): 4.5
Wing Time (hours): 21.5
Total Time (hours): 232.5

 

Left spar complete

Riveted the spar to the doubler with the 5 AN470 rivets using the squeezer. Then shot the tank attach nutplates using the gun.

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Final drilled and deburred the left aileron brackets.

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Scuffed and primed the aileron brackets with rattle can.

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Installed and torqued the aileron brackets to the spar.

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Put up the left spar and moved the right spar to the bench. Hopefully I’ll get that one knocked out tomorrow.

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Today’s Time (hours): 1.0
Wing Time (hours): 17.0
Total Time (hours): 228.0

 

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.

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Tada

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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.

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

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

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Cut some cloth to fit the inside of the tip.

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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.

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

 

Attached left elevator tip

I final drilled #30 the elevator skin to the tip. Then I removed the tip and countersunk the holes.

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I dimpled the holes in the elevator.

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I had to remove the counterweight to dimple the forward two holes. Then reinstalled and re-torqued the nuts.

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Installed the tip with CS4 pop rivets. I’m thinking I might replace my pop rivet tool. I’m getting a burr on the top of all of the rivets and I’ve had several break off in the tool. I’m careful to keep the tool perpendicular to the work but this keeps happening. A while back, a mandrel got jammed in the tool. I disassembled it to remove the mandrel and reassembled it. But I think the jaws are not grabbing properly now.

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In other news, you can see that after trimming and sanding the left HS tip, it fits nicely. The right tip is another story. I think I neglected to final fit it after I sanded the foam or perhaps I seated the foam too deeply. In any event, it spread the tip about an eighth too far and now the tip wont fit between the top and bottom skins at the spar. I’ll noodle on how I might salvage the part for a while and If I can’t I’ll order a new one. My best thought at this point is to take a 1/8″ wedge out of the middle of the foam/fiberglass with a saw and then put  another layer of glass over it.

 

Today’s Time (hours): 1.0
Empennage Time (hours): 201.0
Total Time (hours): 201.0

 

Forward Spar Assembly Complete

Riveted the doubler and spar caps to the forward spar.

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I received the torque wrench I ordered from Amazon and torqued the nuts securing the inboard hinge bracket to the rear spar.

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Both forward and rear spar assemblies completed. On to the ribs…

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Today’s Time (hours): 2.0
Empennage Time (hours): 58.0
Total Time (hours): 58.0