I get that same noise but only occasionally. I usually get it on cool days on takeoff from a dead stop before the bike is warmed up. I've found that if I take it easy on takeoffs at least until it's warmed up, then I don't hear it. I don't get it repeatedly like you do in the video; my bike would usually do it once early in a ride and then not do it again.
I've always assumed it was clutch, and that it has something to do with the engine and oil getting warmed up. But i read the other thread about it possibly being chain-related. Sorry i dont have any helpful info for you...just noting that i hear the same thing occasionally. Are you hearing it all the time on takeoffs?
Will
