I run 6V on a couple of different Futaba based planes...some of the old style Duralites (yeah, I know!) and a 5 cell NiMh. The servos are mostly 9202's, some 9201's (servo just before 9202, same specs) and even some 131's (earlier yet, same spec). I like the little 1000Mah NiMh packs..

The 9202 "family" as it were are not particularly fast, so the 6V really makes a difference in speed....noticeable to say the least.

And I just finished a plane with some faster 9252's. Originally I ran these on 6V, but with the revolving door Futaba spec/advice I decided to go back to 4.8V until they get their s...... er story together.

But even at 4.8 V they are way faster than a 9202 at 6V.

All these are unregulated...I don't think they are twitchy, and one plane has a lot of flights like this...if it was gonna blow up it would have by now. The other plane is the same except the RX, and it's working fine, too.

What does all this mean?? Not a thing. I put a higher voltage pack in a couple of planes, got faster response, and am happy. If I had fried my system, I'd not be happy.