You might check the tightness of the clutch bolts....
Experienced something odd on the way back. Eased up on some traffic that should have been moving at a light that had just turned green, but it just sat there. I stalled the bike in 4th and had to pull out of traffic. After restarting and downshifting to 1st, the bike ran perfectly smooth for awhile, maybe 20-30 minutes, but went back to buzzing tremendously the rest of the trip.
Totally smooth bike and it went to heck after you installed some accessories? Recheck the installation of the Heli-bars. Not sure what Grab-on grip covers are. I don't see how that could cause any issues though. The Heli's would seem to be the most likely suspect. Check the hot idle. Should be around 1250.
It seems this happened after you went through the mods so I'm not sure we can blame the bike on the buzzing if it happened afterwards. It's something you did to the bike. Again, my guess is the Heli's unless you did something else you didn't document.
Of course it could also be adding more miles uncovered something but I really doubt it. Before I did all those things you are going to do, I would put it back to stock first and see if the vibration lessens.
If I understand what happened here (and maybe I don't) you must of braked at the last minute and pretty hard at that, right?
If so, perhaps that's the key to the trouble shooting. Either the hard stop did something to the engine mounting or perhaps the steering stem? In other words, something shifted (micro-measuredly) and then the vibration ended until it shifted back again? Just typing out loud here, but I'd try another hard stop on some safe dry pavement somewhere and try to recreate the smoothness.
What's the hot idle rpm and what tires are you running and do they look worn?
In retrospect, your results are atypical of the bike. Was this bought at a dealer and do you have a warranty? Also, in thinking that this is a 'new' bike, you must have the BTs which are quite frankly crap. Also check the air pressure in the tires. This bike likes 42.
So....will you dump the bike at a lousy dealer as a trade-in or as a private sale and disclose to the buyer the perceived problems so they can have it looked at under warranty by a lousy dealer? Just curious.
What are you implying? I intend to resolve the issue. It is my experience that dealers AND manufacturers these days have one answer for a handful of subjective problems... "they all do that." Buzz/vibration/wobble is one of those issues. Makes it hard to get a resolution. BTDT. FWIW, I would trade at a dealer that sold the make if it came to that. BTW, "lousy dealer" is also subjective, sometimes.
I personally would dumpster the 5 year old Crapstone BT- 021's first- they are bad even when new, I think they are made of horse foreskins.
What are you implying? I intend to resolve the issue. It is my experience that dealers AND manufacturers these days have one answer for a handful of subjective problems... "they all do that." Buzz/vibration/wobble is one of those issues. Makes it hard to get a resolution. BTDT. FWIW, I would trade at a dealer that sold the make if it came to that. BTW, "lousy dealer" is also subjective, sometimes.
I hope to make tires a moot point in the near future, but I don't count on them solving the braking or vibration issues. On my last bike, new tires were the unanimous forum favorite to solve a similar issue and they were not it. I would agree that tires might be the issue with 'stopping' but not the 'braking' phenomenon I'm experiencing. The slightest touch of the brake lever at even crawling speed results in the lever pumping under my hand and hopping at the wheel. Hopefully, a bleed will fix this; if not, then it could be an ABS issue requiring dealer involvement.
I agree with and experience 'minor vibration at just below 3k rpm'; I believe this to be a normal harmonic of the engine