RE: 6V Nihm Receiver Packs - Regulator or not
The Futaba ones are listed on their website ( maybe Towers too ) as 4.8 only.
I have all kinds of JR servos and although all the ones I have will run on 6 volts the coreless ones will scream like a banshee when the voltage is over about 5.8 volts and as stated a fully charged pack will give you about 6.8 volts. This stops as the voltage goes down.
I have always regulated my voltage to 5.7 volts but I am rethinking this after almost losing 2 planes that had the voltage regulator pack it up. I was just lucky it started as an intermitted problem and not a sudden all out failure.