Brief Description: Fab'ed W-417 bellcranks for ailerons
Fabricated the W-417 bellcranks from factory pre-cut, and pre-bent components.
Used clecoe side grippers to secure components and 'back drilled' through the bearing flange to establish rivet pattern through all layers. Then added required .063 spacers on each 'arm' and repeated the drilling process.
Disassembled, deburred, primed and re-assembled complete assembly. Measured the 'radius' distance from ends, all sides to locate center of 3/16" hole. Then drilled through the assembly on the drill press. This worked great on the first W-417 assembly but somehow resulted in a slight off-center location on the second assembly. Think that I needed to get better lighting on the workpiece and missed the mark. Also, have a slight wobble in the arbor of the press and attribute some lack of accuracy to that. (That's my story and I'm sticking to it.)
Decided to use the hand-squeezer on these AN4-6 rivets instead of the c-frame that I used on the F-635 bellcrank made earlier. The squeezer was definitely easier to control and get clean sets without any smileys.
