Originally Posted by
80sPattern
Now that I have tried both methods I can tell you that two servos is the ONLY way to go. I'd also suggest a separate steering servo slaved to your rudder with a mix. Makes trimming the steering a breeze and allows you to turn the servo off when the retract switch is "up."
Setting up the Dave Browns on a single servo plus actuating gear doors on same, was a great deal of fun for me back in the day. Yes it took thought to figure out the geometry but once it was done, it worked exceedingly well for a long time.
Multiple servos is simpler, I agree, but heavier