Hi, I had never paid attention to my tail belt until I saw this post....... I had to replace it because I overspeeded the heli without blades (I didn't know that could happen
). Anyway, not it's brand new, it's well tighted but now I see there is some "black dust" around the tail rotor, I guess it comes from the belt... why????? is it normal or I have to lubricate it?????? before reading this post, I never lubricated my tail belt and I didn't have problems for maybe 30 flights until I made the mistake mentioned before. Do I have to lubricate????? what does it prevent????