Originally Posted by
DRTMI
Glitch buster or a BEC. I use a BEC on all my rigs personally. On an 1//8 scale it won't even notice the weight that one adds, and you can adjust the voltage to suit you servo. I use mine with a by-pass harness so the BEC only runs the servo and the ESC powers the receiver.
+1. If your ESC doesn't have a 5A BEC, forget about it. Use an external BEC.