FWIW, Paul Poberezny once told me there were a number of Piper PA-11s
that came off the assembly line with tailposts inadvertently offset from
centered location by 1/4". He said "The air never knew the difference."
Slop, flex, or looseness could make an airplane more prone to develop
flutter in some conditions and should be addressed, but it's not really
an effective use of time and effort to try to blueprint out from an
airplane's rigging any deviation to a degree that is probably
unreasonable. Would you try to do it with a boat, another vehicle that
operates in a fluid medium? Just another $.02.
There are any number of valid approaches to the issue of aileron
rigging. We've heard from Mac that the RAF's method was to rig them to
droop at rest to take up slack. Back in the day, some models of Wacos
were rigged with the trailing edge of the ailerons higher than the fixed
trailing edge of the wing, which effectively reduced the angle of
incidence at the tips and allowed the ailerons to be very effective well
into a stall.
You refer to flaperons - is that what the original builder did with the
ailerons? Can the angle of both ailerons be changed together to affect
glide path and drag like flaps?
Chris K
On 4/19/2019 8:16 AM, Max Power via KRnet wrote:
Slop was a poor choice of words, maybe flex describes it better?
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