As to the 'Goldwing whisper' that was the original point, no, we have not resolved that. However, having said that, I think that I may be off-base in what I was looking for.
If one is not on an RT, but standing off to the side, these are not loud machines. I even had someone comment on how quiet my RT is when they hear it in the parking lot at my workplace. And, as previously posted, while standing in school parking lot while my wife was practicing for her MC endorsement, I was impressed by how quiet the RT is.
I guess what I am coming to realize is that the noise when ryding the RT is not the same as the noise when observing the RT. Perhaps earplugs will address the issue that I perceive.:dontknow: