BDD system - Helicopter tail rotor
1,660 views · Published 4 February 2012 · 1:13 · Indexed 29 October 2026
Channel: RCmags · 2012 · Entertainment
This helicopter uses Mr. Whites BDD system (a av. ballsocket between two props) to couple the rotation of the main and tail rotor on a 1:1 gear ratio. Mr. Whites BDD tutorial: http://www.youtube.com/watch?v=bXdft6GL4vM