Thanks for the info guys and gal.........
Malcolm 'does the ESC share power?' That was my question but as you pointed out it has a BEC which gives 5v on the red wire that I think I may have my answer now....... Read on (maybe have a good laugh but if you do please let me know where I am going wrong)
DN72...... I want one of those tee shirts so here goes
I need a minimum 11.1v for my brushless motor (up to 18v)
I need a good 6v to power my winch servos (minimum 4.8 but at a lesser torque, I want 6v)
I prefer to have 2 smaller 6v batteries joined in series than one big 12v (easier to position in the hull and lower down!)
I want to charge the batteries at the same time with one connection.
SO, will this work?........
I get 2x 6v gel cell batteries and join them together to give 12 v
I cut the red wire on my ESC and connect it to the 12v supply and plug it into my throttle channel on my receiver
I get a 12v to 6v reducer and plug it into a spare channel on my receiver
I think (hope
) that gives me a constant 6v for my servos and should I need to use my motor it will run at 12 volts