The manual specifies 25 degrees up and 35 degrees down for elevator trim tab. 60 degree total travel.
Manual trim
Dwg 5a specifies 1 7/8" from piano hinge pin to horn clevis pin (arm) distance.
That would seem to indicate a maximum of 1 7/8" inch travel of trim cable.
(sin(25) + sin(35) =~ 1)
Is that what you have with your manual trim?
Electric trim
EEF-1 drawing for electric trim does not have an exact dimension for the arm, but looks like 1.6".
The T3-12A servo has 1.2" travel.
It would appear to only give 45 degree total travel -- only 75% of manual trim range.
Is that enough? Has anyone encountered lack of trim range with electric trim?
Finn
Manual trim
Dwg 5a specifies 1 7/8" from piano hinge pin to horn clevis pin (arm) distance.
That would seem to indicate a maximum of 1 7/8" inch travel of trim cable.
(sin(25) + sin(35) =~ 1)
Is that what you have with your manual trim?
Electric trim
EEF-1 drawing for electric trim does not have an exact dimension for the arm, but looks like 1.6".
The T3-12A servo has 1.2" travel.
It would appear to only give 45 degree total travel -- only 75% of manual trim range.
Is that enough? Has anyone encountered lack of trim range with electric trim?
Finn