[iclick]

Here's an update that gives little in the way of news, but I'll pass it along anyway. I received a call from my local dealer's service manager, who was responding for the owner who promised me answers on the noisy-tranny issue. Apparently, HD's position on the various noises produced by the 6-speed tranny is normal and not a sign of problems that will bite us later. I tend to believe this, as I've had transmissions that were noisier than this that never failed (e.g., Muncie M21 on my '66 Corvette), and have already taken steps to rectify it by experimenting with various fluids. First, I changed the primary fluid to 20w50 Castrol GTX (fossil engine oil) and Royal Purple 75w90 in the tranny, which did seem to make a moderate difference with the clattering. Then, in response to feedback here, I recently changed my tranny fluid from Royal Purple 75w90 to RP 85w140, which made a dramatic difference.

He also mentioned that the noise exists in all 6-speeds, not just touring models, and that they are more noticeable in the big bikes because the fairings tend to reflect the noise toward the rider. You would think windshields would do the same on any bike, however.

I asked the guy if HD had a problem using the thicker gear oil and he said "absolutely not," and that if it quietened the tranny down that I should continue using it. So, that's my plan, since although it isn't totally quiet, it is quiet enough to no longer detract from the many virtures this bike has to offer. As far as I'm concerned, the tranny noise is no longer an issue with me, although I will be watching the messages here for any new developments.