Brief Description: Vertical Stab main skin fit issue
Started work on the main skin. Removed the tab from skin per step 2. Tonight I was reading ahead on page 06-07 where the fin structure is installed into the main fin skin. I noted the note about not forcing the ribs and deforming the skin. I'm waiting for a nutplate from Vans that I decided to replace after I had to remove a rivet I was not happy with so I thought that I would do some trial fitting of the various components into the skin. First I fit the front spar and lower rib VS-1202 and VS-1208 which I had completed connecting except for one of the nutplates. It fit Ok except at the nose of the VS-1202 front spar at the front bend area of the skin. The last two holes in the rib would not line up because the piece would not push into the bend area sufficiently. It appeared the front end was too tall on the rib. I had done the radius work per the drawing but that did not appear to be the issue. I looked at the interference area and ended up filing some of the front end at the upper and lower corners away. Putting it back in and out twice I got it to Cleco up without adding a significant amount of force. It still appeared to me to be very tight. I put rib VS-1207 in place and it fit fine. Next I decided to try the upper rib VS-1205. I could not get it into place front to back. It is nearly a quarter of an inch to far back per the hole locations on the skin. The front end will not push any further forward. I did some work on the front end of the rib to the point that I am not happy with what I have done and the rib still is not close to fitting. I installed the rear spar in position just to make sure the geometry was OK and it was. I took a measurement at the location of the two front most holes in the skin where the front rib holes should align and got a gap between the upper and lower holes of between 0.95 and 0.99 depending on how much the skin is deflected from its natural bend. I measured the front end of VS-1205 at the hole location and the rib is 1.19 high at that point. That tells me that I would have t
