The flip side is that instead of two things which can possibly go wrong, you now have four.

Unless you short the servos or stall them so long that they overheat the motors... more often than not the problems tend to be with stripped gears or loose plugs.

These can easily be checked for prior to starting your flying day.

That's not to say that I haven't had a flat out "bad" servo, ( I've had about 3-5 thus far ) that behaved strangely etc... but these are the sort of things that you tend to find out about on the first flight...

e.g. I had one that worked perfectly on the ground, that is, until you ran the engine up, then it would go nuts...

( Replacing the servo with another of exactly the same make and model fixed the problem... )


... but a plane crash every once in a blue moon is unfortunately a fact of RC life.

Forgo loading the plane down, taxing the power system more, and introducing new variables if you can.