thanks for the info, I was just wondering, I have a couple of brushless twin screw and just have them on one throttle channel, they don't need to manoeuvre that precise.
lipos, minimum voltage as Jim says, 3.4v, 3v is on the threshold of no return, and the timing is for the speed controllers. If operating slow, the motors are "jerky" or not smooth, up the timing in incremental stages.
I found certain speed controllers don't like to operate slow, or might induce a screeching sound from the motor, changing the timing can help, if plug and play default works ok, then just leave it. I think the poles on the motor also comes into play, and the motor spec sheets can sometimes suggest the esc timing.
My 4 foot twinm screw fireboat, I had a terrible time trying to sort this, the hobby king esc's kept cuttting out, turns out the low voltage shutdown was kicking in way too early, as I accelerated, the current and amp draw obviously spikes, and the esc's kept thinking time to shut off, I turned this feature off and all was well. I use cheap lipo low voltage alarms on all my lipo cells, they plug into the balance lead, set at 3.6v per cell, so if they bleep, I have time to get back to shore
Paul