Brief Description: Inboard Aileron Hinge Mounts - Oops
Well... the first aileron hinge mount had a 1/8" of shrinkage. Decided to see if I could correct. Keeping the mounting holes lined up with the jig the bearing tube would move into PERFECT geometry (3/4" from hinge point) with 1/8" gap between the hinge mount and the jig. I cut 3- 0.125" washers from a sheet of 4130 and edge welded them to the mount. I didn't want to have to remember to add 1/8" of washers between the part and the rear spar. Now other than 3 washers having to be added, the geometry of the hinge mount is perfect. Will add more to my correction for shrinkage on the next mount.
Began assembling second inboard aileron hinge mount. Doing this one differently to see if I can reduce shrinkage. Welding from spar aft. Solid tack to the bearing tube and then weld tubes to finished state. Cut tacks reposition bearing tube and weld legs to bearing tube. See if that will reduce the amount of shrinkage.
In a brilliant display of stupidity, I had stacked washers on the 1/4" bold to proect the bearing surface... I welded one side of the washers to the mount. Guess I'll get to use my cutoff tool.
Update: Washers came off easily. Finish welded attach points and placed mount back in jig. Started welding bearing tube to legs.
I hate it when something that should take an hour, takes 4.
Complete Inboard Aileron Hinge Mount With 0.125 Washer Added.
