Originally Posted by
mattster1971
how does it make a difference? I am curious if I should have these on my Axials, but I am running the Castle Creations Mamba max pro which has a built in BEC but should I have an external also?
The Mamba Max Pro has a selective BEC output (5v~7.2v). I don't know what the default setting is on the ESC, but check it out.
Update: MMP default BEC setting is 5.5 volts, and I believe you need Castle Link or Feild Link to change the settings.
Do you have a Castle Link?