Wonder if anyone can help? I have searched the net and have not found the info I require. I have 3 EmaxES9258 servos Can anyone tell me what frequency that operate at i.e. 1520u at 250Hz or 333Hz or 70Hz. They are digital servos with metal gears. Cheap, yes, very. I have burned out 2 of them so far but can not find all the info on them. Cheers. Incidentally I have two heli on the go at the moment again . Yes , I know it won't last but I am being very, very disciplined and gone back to basics. Tail in hover, side on and get that imprinted on my brain before I gone on. All the best.