RC Excavator - MORE POWER for free - Huina 1550 / Double E 561 / SP800

Upgrade your rc excavator for free. But be carefull this can damage the gears. It's better to add limit switch and diodes to prevent breaks. Music: Tonic And Energy by Elexive https://soundcloud.com/elexive Creative Commons — Attribution 3.0 Unported— CC BY 3.0 http://creativecommons.org/licenses/b...