Friday, January 16, 2009

Skin Installation and a Static System Question






Riveted the bottom left and right skins together, riveted the same skins to the fuselage frames. The plans tell you ONLY to rivet the lower right an left skins to the bottom skins. I did it that way, leaving the lower right and left skins NOT riveted to the fuselage frames. After discussion with a fellow builder, the plans must be written this way to allow the frames to flex a bit to allow installation of the F-1211 aft bulkhead assembly. On the other hand, maybe a plans omission. But, it doesn't matter. Can rivet them during side skin riveting.

Installed the aft bulkhead assembly. Deburred, finished, and broke the edges of the left and right side skins. Installed the skins and appear to have a good fit. Ran the pitch/trim wire and the strings thru the fuselage. One end of the pitch/trim wire has pins. It appears that the pin side goes forward as lugs are crimped on the aft end, Page 11-06, Step 13.

Started reading the instructions for installation of the static air system and then had to do a bit of research. Was worried there might not be enough meat inside to connect the 1/8" tubing after setting the static air system rivets.

The one page of instructions that comes with the static air kit tells you to set the rivets into the fuselage side skin and after setting the rivet the mandrel is driven out.

A post from Scott on the VAF forums in November 08 indicates.....

"I believe the instructions say to slightly set the rivet, but not enough to break the mandrel. Tap out the mandrel to leave a hollow rivet. Push the static hose over the rivet end and seal it in place with a smear of proseal or RTV around the perimeter. I could be wrong...but thats how I have done it about a dozen times and have never had a leak (in that location anyway )."

Placed a post on the VAF forums asking for the best way to do this?

Time - 5 hours