I run five 5955's off two 2 cell A123's and have done for about two years in a QQ Yak without problems, this is fitted with Futaba on 2.4Ghz now and still no problems.

I allso have six 7955 and one 5955 in a Rookie again without problems on a 6014 admittedly with an Orbit power jack fitted which regulates the voltage to 5.9, I would suspect the linkages rather than the servo's, being Digital and Titanium geared they would be pulling a lot of Amps in a stalled condition and I think would burn out very quickly.

Mike