Many ECS's come with a "Battery eliminator circuit" (BEC) which will power your ESC, Servos, and Radio receiver(Rx). There may be a time when you want to disable the built-into esc. One reason could be that the BEC doesn't provide enough amps or voltage to your servos, or you are running a twin motor setup and want to disconnect the power from one ESC, or sometimes these onboard BEC's will fail and you can simply disconnect it and use an external power source.
Below are the basic steps for disabling the built-in BEC from your ESC.- Disconnect the main battery pack & make sure the prop is off the boat and clear of it hitting anything.- Remove the thin red wire from the black ESC signal wire connector, the one with the brown/black and red wires. (See picture). The easiest way to do this is to lift the tab on the black connector and pull the red wire connector out. Then tape this wire to the outside of the connector. Just in case you need to enable the esc bec circuit.
- Now you have to supply power back to the system to power the RX, ESC, and Servos. There are a few different ways to accomplish this. The easiest is to install a 4-cell aa Rx pack, NiMh or LIFE battery Rx pack. Or to install an external BEC, but this is a bit more involved, soldering will be required. Those work off of the battery pack from your main motor battery. An external BEC will be a bit less work in the long run because you do not have to charge or replace Rx batteries.
- After you have installed the power source its time to test the system, plug in the main battery pack.- Go through the calibration process of your ESC.
- And test the esc for function.
Good Luck!
Login Status 
Login Status
Login Status