As bevel box was out i changed oil to the redline we got from the U.S.A think it makes some difference but dosent silence it completely, seems to have moved the sound to different speed, Off to TOTH next week we see how a longer ride affects the situation
I changed my BB oil twice. First with Redline MT-90 which did not make much of a difference. The second change to Redline Shockproof (the pink oil) produced a reduction of noise, especially the unpleasant high pitched whine. The BB now lets one know that it is there, and varies with speed, but the sound is a more pleasant mechanical sound. I did also apply sound deadening material behind the seat back and lining the drive train tunnel which helped reduce the residual sounds.
Best wishes on the success of your intervention.
