Super D,

I am a Futaba sponsored pilot. I am currently running all of my Futaba digitals on 6.0 volts regulated, and I know of other guys who are running the "4.8" only servos at the higher voltages with no problems. One was even running them unregulated on a LiPo 7.4v pack and had no issues. I personally am running, 9154's on my ailerons, 9351 on the rudder, 9254 (heli tail rotor servo, 50oz torque, .06 transit time at 4.8, so its probably closer to .04 at 6v). In my new ship, I will be running dual elevator servos, simply to counteract the heavier YS 1.60DZ in the front, so I'll be using 9650's mounted in the stab. All of these servos will successfully handle 6.0 volts with no problems.

For cheaper servos, the 3151, and 3152 sport digital servo's are nice servos at a very reasonable price.

Arch Stafford
Team Futaba