Tag: service bulletin

Much progress on rear spar

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Peeled the vinyl from all the parts. Did the minor cutting and fabrication called out in the plans. Cleaned up and deburred all the edges with file, deburring tool, scotch brite wheel, and sandpaper. Scuffed everything with a scotch brite pad.

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Assembled and final drilled the aileron hinges. The inboard hinges are from the service bulletin. I’m surprised they haven’t updated the plans yet. Had to follow the SB instructions.

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Clamped the spar doublers to the spars and match drilled them.

 

 

Drilled out the aileron pushrod hole in the inboard doublers and cleaned them up with the Dremel.

 

 

Clecoed the right rear spar together with the wing assembly.

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Today’s Time (hours): 4.5
Wing Time (hours): 59.0
Total Time (hours): 270.0

Wing ribs complete

Riveted the forward flanges of all the ribs to the spar with the rivet gun. My riveting seems to be getting better… Didn’t have to drill any out. I set the pressure at the compressor to 75psi for the -4 rivets. This seemed to work really well. I had tried a lower pressure in the past and the manufactured head would get all beat up. At the lower pressure, I had to hit the rivet so many times that I think it was getting work hardened.

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I also finished installing the AN3 hardware and torquing to spec. Kinda sorta starting to look like wings…img_2291

 

Picked all the parts (including the service bulletin kit) for the rear spar.img_2293

 

Today’s Time (hours): 2.0
Wing Time (hours): 54.5
Total Time (hours): 265.5