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Weight shouldn't be a concern, your battery will
replace lead.
My feeling is that simplicity is best. A
regulator just adds expense and another failure point.
4.8 volts will work just fine. We have experienced
some wacky behavior with 6 volts and some servos. There is a feeling,
unconfirmed, though empirically driven, that 6+ volts is perhaps more
likely to toast/wear out servos prematurely.
You may consider having 2 4.8 packs, just wire them
both into separate switches and then into the wiring harness at 2 different
point/lines such that a failure of any connector along the way will not lead to
a dark ship.
We fly lots of 1/3 scale ships here, that's what
works for us.
Lee Estingoy
Kansas Soaring and Electric Club
(KCSE)
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