RE: Futaba 3154 on 6 volts???
i bought the 3154 brand new for 34 bucks. put it on the tail with the gy401. no regulators were used. used with the align 35a esc with the bec rating at 6v. not even 2 flights in the servo got hot then went completely dead. if you add the cost of the servo with a regulator its the same cost for a 9650 without the performance of it. but i guess if you had a small bird in the 300 size using this servo at 5v it would be ok. this servo is TINY!