If you want maximum flutter resistance in the retracted position ensure that the geometry is such that the servo horn and the pushrod are in a straight line.
David,
thats only the case in the "flaps down" position. When the servo pulls the flap up, its more of a 90 deg between the arm and rod, and the servo is holding the flap up on power. ... either way, on the down or up position, you have a servo "holding" under power ... non digitals work best here. There is no need for a digital, as speed and precision are of no consequence over that of a good analog servo ..
Jeremy,
I know the 8611 is stronger than any of the multiplex servos, however the Firebird comes with a specially machined elevator rod system which also includes a special servo horn which is made for the Multiplex servos .... Im curious to see if everyone is using the recomended Multiplex servo here in the US ? I know Tom Cook says you do not need more than the 200oz torque on the elevator, and im sure thats the case as so many firebirds have had success wth it, but i would like to explore my options ... Im also concerned that the Multiplex line of servos is going away with time, along with parts support ...
Wojtek