A good digital servo will always kind of chatter like that. It's trying to maintain it's position.
Originally Posted by
GuiltyByAssoc
Got a Spektrum S6040 (Couldn't find a Savox at local shops) decent price $75.00. Compared to the old stock rtr servo its like nite and day..WOW! But is it normal for the unit to make that much noise when turning?!? or do I have a defective unit? Is the Voltage protector necessary (haven't had any issues yet)?