Tuesday, October 11, 2016

Moving forward on the Ailerons - 8 hours

So I started the day by finishing backriveting the stiffeners on the aileron skins. Similar to the elevators I used a dab of Dow #3145RTV on the aft edge of the stiffeners before riveting.
 
 

 I was now ready to bend the aileron skins. I had run to home depot and picked out the straightest 2x6's I could find and some 3/16" dowels. I taped the dowels in place and began to bend. The manual says to bend the skins such that when relaxed they touch the aileron spar, but I was having a heck of a time getting it to do that. I was at a point where the ailerons where basically toughing together in the brake and was still about an 1" away.   

So a quick call to vans support confirmed that I was in the ball park. The most important part is that there is no danger of the skin bulging when its cleco'd and its nice and straight. It only take a pound of two of pressure to close the skin the last 1" so there was no worry about too much tension. As for the straight edge....A little squeezing with my homemade trailing edge tool made sure it was nice and straight.

Once that was complete I was ready to begin batch drilling the A-408 reinforcement plates and the aileron hing brackets. Of course I did as much drilling on the drill press!