Hi BrynbachAus,
its not possible to do what you want with just 1 esc. You will need an esc for each motor. I personally haven't tried using a v tail mixer to achieve this effect but have read several articles on it. Most seem to go for a dedicated on board mixer rather than use the transmitter mixer, as most transmitters v tail mixers don't seem to give sufficient mixing to get satisfactory performance.
I guess it depends on the transmitter, I'm sure some others here will enlighten us more. a good start would be to have a look at action electronics web site, theres loads of information on mixers there.
cheers Glenn
