albertaduke
former airline pilot without the big bucks
Correct me if I am wrong, but the Roadsters did not come out until the end of 2009 - beginning of 2010. so you may have a Rocket III or a Rocket III Classic. Both excellent models and of the era of no vibrations. LOL
smantsy pantsy! roadster, classic, standard blah blah blah details all the same anyway ... frame and engine but mine is none of the mentioned anymore it is now a JD special and after changing both output shaft bearings in my garage ,(with the help of many experienced captains)I can report that it runs very smoothly did before and after the swap and I found out early about the bearings because the smoothness had somehow dissipated and a coffee grinder vibration and noise became apparent so your vibration is NOT a reasonable assumption it should be smooth period.