Ed Sullivan wrote:
On Thu, 27 Sep 2007 01:45:50 -0500, cavelamb himself
wrote:



As long as the uiball is tight against the bell crank or horn there
will be no play.

:Ed

True, nut not necessarily the whole story, Ed.

Because there is a small moment due to the off-axis pushrod, the
arm itself could flex.

If the arm is really thin metal (as possible if a sheet steel part
were used) it MIGHT be possible to excite the aileron system -
ie: cause flutter.

Richard



That could be true, however I only attached rod end bearings to 4130
tubing.

Ed


One end, maybe.

But tube arms???