Some people ask about running motor without need for Tx / Rx ...
I thought on my next test - I'd try and remember to take a photo.
Here yer go - attached.
Tester is the cheapo Dual tester from Hobby King ... think it was about $7 ?
Red Brick 70A ESC with 5V 5A BEC
4S 2700 35C Compact LiPo
4400kv Heli motor
70mm Haoye 6 blade EDF
As you can see - the Tester is just same as a Rx ... it accepts power via servo plug connections as well as the labelled battery slot. The ESC lead is plugged into one of the servo locations and bingo.
One of the main things to remember is to have dial turned all way counter clockwise or the ESC will not arm ...