thanks for the help guys..i tried to get another motor from lhs but no luck (2 week wait ) can the 3s bats be used with the ecs i have ??(15 amp) any one have amp / tach / thrust readings for this (2s) setup?? what are you using to measure thrust ?? i was told the 12/6 gws prop was best for this setup, any other suggestions ?? are the smaller props used only on the 3s setups or different gears ?? how do i know if the ecs is going to full throttle ?? have a good new year....rob m probro 372