Next, the curved tips go on. I had to remove the aileron to install on it's wing, so that the tip will match the curvature of the wood wingtip built earlier.
Now she's ready for the covering that goes around the leading edge...with...868 rivets!?! The sheet covering forms the closed "D" section which gives the aileron stiffness from twisting. That is very much like the Triumph's fully boxed frame! Or...very unlike the Model "A" Ford frame which was an open "C" frame that twisted easily.
I am sure the scorching on some of the ribs bothers some viewers. Those are ribs that were mangled and had to be straightened. With aluminum, you must anneal it before doing any major bending or straightening. If you try to straighten a bad bend, the thin sheet will crack...and that's the end of the road for that rib. They are much too thin to repair by welding. A trick is to mark the aluminum with a sharpy. Then when you heat it, you know to stop heating when the sharpy mark just disappears. If you heat any more, you end up with a small puddle of aluminum that used to be your part, LOL. Once it air cools you can do some more straightening without cracking.
That's it for now...
Hope everyone is taking advantage of the nice Spring weather to get the cars out for a ride!