When installing and adjusting the flaps on the LIV-PT as per plan,  the
instruction manual alludes  to some "tightening up of the rollers"  as full
extension is achieved.  Upon further inquiries as to acceptable limits,
prevalent answers seem to be that the flaps should move "free and easy with
no binding".   I have spent numerous hours "observing the geometry" and
"using my analytical skills" to try and determine the optimal adjustment of
the flap linkage.   I would feel much better if there was a definitive, and
quantitative  measurement for the allowable binding in the flap linkage.
I have attached a spring scale to the inboard bellcrank of the flap linkage
crossover tube and measured an average of 28lbs of force (peaking at 46lbs)
to fully deploy the flap with both actuator arms connected to the flap.
I would like to hear from other builders of LIV-Ps to see what sort of
actuation force is required to deploy their flaps  so I can attempt to
quantify  "free and easy with no binding."
Craig Burgess
LIV-PT Kit #224