Hi John
I would never suggest not using safety wire, however,
just for a data point, I have been flying for 10 years with the ball joints
and have not had any failures. I do inspect the bolts/nuts/cotter keys
when ever I have the cowl off. I did replace the hardware after 6 years
of flying simply because it was beginning to show signs of
deterioration. Its hard for me to imagine a scenario that would break
the three bolt connections and yet safety wire would survive.
But, again, it certainly would not hurt anything to
safety wire it.
Ed