The Parrot AR.Drone comes with 8 brass bushings – 2 per brushless motor. Replacing these with bearings reduces friction and therefore energy usage, which can result in improved battery life or flight times. As an added bonus, this can also help to improve the longevity of the brushless motors.
As you can see in the video below, performing this upgrade only takes a couple of minutes.
The Parrot AR.Drone sponsors: