icon04:00 RC-Videos Rare MD-520N R/C Helicopter with Air-Stream Tailrotor and 5 Blade Mainrotor RCHeliJet9 Jahren ago 1 Jahr ago Swiss Heli Challenge 2015 *****Special R/C Helicopter***** Rare MD-520N RC Helicopter with Air-Stream Tailrotor and 5 Blade Mainroto... 03.6K