lowering the voltage sounds like a waste to me.
think about it, ESC's are more efficient when going flat out (less FET on/off phases) so hence running a pack that can do 6v for the whole time would be better imo
E-revo 3.3 conversion, 249kv outrunner, 6s, MMM
the porthole from the noob world an here has been opened!! that's how i got in.