Added nutplates

Short build session tonight… Got all the nutplates riveted on to the inboard edge of the tank skins.

The sealant is curing up nicely.

 

I also temporarily installed the fuel senders in order to tweak the float rods to ensure the proper clearances. I’l permanently install them with sealant after I’ve riveted the baffles in place.

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Today’s Time (hours): 1.0
Wing Time (hours): 223.0
Total Time (hours): 375.0

 

Fuel Tanks: the struggle is real.

Fuel tanks are absolutely kicking my ass. I got back from Toronto last night and checked to see if the sealant had cured. The stuff I had applied Monday had hardened up nicely. The first batch from from Sunday was still gooey. Not cool. They came from the same can. So I must have made a mistake in mixing that batch.

I talked to Jared and Van’s. Consensus was that it may cure eventually but Van’s recommended that I re-seal these parts with properly mixed sealant. Unfortunately this meant removing 22 stiffeners, 2 fuel fillers, and 2 fuel drains. I had to drill out a couple hundred rivets and was left with a sticky mess. Thankfully the sealant on all of the ribs we had just riveted into the left skin was fine.

When the sealant is first applied, it wipes off easily with some lacquer thinner. Once it has started to cure, not so much. I’m headed to Aircraft Spruce tomorrow to pick up some PolyGone. It is specifically designed to remove polysulfide fuel tank sealant.

 

It was essential to my sanity that I make at least some modicum of forward progress today. So I bent up the rods for the fuel sender floats per the plans. Since the ribs were installed in the left tank, I was even able to fine tune the left sender to the proper clearances.

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Today’s Time (hours): 3.0
Wing Time (hours): 208.0
Total Time (hours): 360.0