Clearance holes for bolts. The AN3-7A bolts (3/16" diameter) which attach the aileron bellcranks are shown as having 3/16" clearance holes on the plans. Now, according to accepted methods of manufacture, we are told to drill a #10 clearance hole for this bolt.
Question: Why doesn't Van spec this on their plan for this (and other) detail?
Note to others when trimming brass bushings for aileron bellcranks:
Chucking the bushing in the drill press and depressing the blunt end onto a sheet of sandpaper provides a nice, perpendicular and finely machined surface which can be slowly trimmed to the PERFECT length!
Give it a whirl!
CJ
CJ