Battery backer
The battery backer will automatically switch from a
discharged battery pack to a charged one.
A servo for each aileron
Mount servos out in the wing with relatively short 4-40 rods going
directly to the aileron horns.
2 servos for elevator control.
Use one servo on each half of the elevator along with separate
control rods to each elevator half or 2 servos on a servo
doubler system.
Use coreless servos
A coreless
servo will allow a "blow back" to neutral on an in-flight
servo failure. While it's possible to have a servo failure resulting in
a full power, full deflection lock in it is extremely rare.
Use of servos with adequate torque
It is much better to have a bit of
"overkill" on servos as opposed to lack of power although any standard servo may be used on throttle.
Use a
little extra displacement in engine choice
Additional power can get you out of tight
spots.
