You can wind in flap till the feel is the tails following the plane , or the feel is through the wing , you cant feel the elevator .
Presumably this might be a maximum flap ratio.
Anyway , its getting the wing to do the work .
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Some persons mention of downthrust .
Presumably in certain cases its valid .
The old spiral airflow scenario .
Worth a test to validate .
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Presuming the incedances are sot on ,
Drag in the wheels will cause this. . . .
Check or trim with the relative incedance of the wheel fairings,
or if theres a turbulance issue in the wheel openings ,
test by blowing ciggarette smoke through drinking straw from 4 or 6 inches forward of it , in line with oppening.
see if it gets caught and rolls at junction wheels / pants . This is why they use pants liners (around wheel )
as theres a pressure differential otherwise , too . ( take four very deep breaths before Ea. blow , to avert
health issues , chokeing , and turning blue ! )
This could effect insides , and be irrelevant or assit outsides.
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Having used 3 1/4 ballon wheels , the frontal hight of the center of resistance was apparent.
Combined with the high thrust line.
Offsets in forces and resistance .
Cranking in a few inches of diheadral solved it in this case.got the corners even.
even with the big wheels, though working hard the tailplane would thump through the turbulance wakes from the wheels once .
previously it'd kick three times going through it .
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