Trying to find a rattle (not ticking)on new R1. It makes a fast vibrating rattling sound only in 3/4/5/6 gears at about 3500-4200rpms when you slowly give it gas in that rpm range. Took it to the dealer and put it on a dyno and could not duplicate the sound. It did make the noise when I rode it back home. I assume that the dyno is putting the same kind of load on the rear tire as if were on the street. So, if that is true, the only thing that wasn't moving was the front wheel/brakes. The front tire was cinched down. I've tightened up the clips that hold the brake pads..same noise. I've even tried to stretch my leg out and touch the caliper with my foot to see if I could feel the rattle in the brakes...leg not long enough. I've checked everything I could think of ie...EXUP/ airfilter/exhaust.ect.. I'm wondering could it be the cam chain tensioner? I would think it would of shown up on the dyno. Anyody have any ideas and if you had a bad tensioner what did it sound like and when did it make the noise? The other possibilties..detonation (I use 93 octane), clutch???