G.p. 1/3 Scale Pitts - Ca Hinges
Not knowing how heavy your into fly-ins, ie AMA/IMAA events,
the Ca hinges will not pass tech. inspection. You will not be allowed to fly until they're changed to something like the Robart
elbow style - at least the 1/4 scale kleet hinges. It's scary to
spend that much money and that size of plane to risk it on those
hinges. Too much of a chance for flex flutter even if you tape the joint. Ok, you say your not in the IMAA , think of the safety of the
others at the field. I'm not anti-Ca hinges , they're on a couple of my 40 size planes.
A few years ago the IMAA High Flight magazine published a study
that UV rays over time caused deterioration of the soaked hinge
material causing a failure of the hinge then flutter and you know
the possible next step.