Originally posted by imjonah
2. Digital servos draw more current. I guess some ESC and receivers have a FET output wire. Is this something that helps or will the digital servo still plug into the standard receiver?
There's no relation between the current draw of a digital servo and the socalled FET wire.
Each and every digital servo draws more current, regardless of they have a FET wire.
Servos with a FET wire, do get 7,2 volt directly from the main battery. Thus they get a higher voltage (=more speed) AND there's no current limiter in the BEC in the ESC.
So if you already have a speedo, which you're happy for, the remedy could be to get a servo with a FET wire
However, we're talking 100$-servos. But again, a fast servo is a grate, yet overlooked, hop-op, which will last for years and can be taken to the next car