dave many thanks I forgot about disconnecting BEC lead ,I found a lead on one of the esc had been dislodged works great now.

take care cause I care

dennis

HI Dennis
Yes you must have a seperate ESC for each brushless motor. Brushless motors regulate their speed by communicating with the ESC so they have to have their own controller.
I have always used separate receiver channels foe my brushless set ups but I believe a y lead should work. Many ESCs have built in BEC circuits so you may need to break one of the red ( ve) leads between 1 ESC and the Y lead. I suggest you amend the Y lead by pulling out one of the ve connectors on one of the leads to the ESC.
Brushless motors are high current users so separate batteries should give you a longer run. For best results you really need to use a Wattmeter to measure the load so that you can select the correct props for your motor, ESC and model. Too big a prop can and will burn out either the motor or ESC, you may well need to watercool both for fast prolonged running (racing).
I am assuming you are using NiMh batteries so will not need to worry about discharging the batteries below their minimum permissable voltage. Should you be using LiPo's then please advise so that I can advise you further.
Good luck 😀