Buzzing feel on the hand grips

[billyboy]

When I speed up real fast I get a buzzing feel in the hand grips. What can this be, it seems to be
getting worse. Someone said it may be the carbs out of synch. Any ideas? Thanks Bill
       

[Black Dog]

Got this from 'Shop Talk'...

http://www.valkyrieriders.com/shoptalk/buzz.htm

Worth a look 

Black Dog

[Chrisj CMA]

The buzz bolt thing is a sound, not a vibration in the handgrips. 

If you dont feel that vibration in the right footpeg as well then I say its just normal.......if you feel it in the handgrips and the right footpeg then I woould check the U-Joint

[salty1]

Loose motor mount? Tire balance?  

[Jess from VA]

Many (including me) have complained of a harmonic vibration in the grips......mostly the throttle side only.  And only while running at higher speed /rpms for a period of time.  I have thought this was caused by the necessary looseness of the throttle sleeve on the handlebar (and maybe moreso with Kury Iso grips so many of us run).  When it happens I get a tingly right hand, like a funny bone strike or carpel tunnel syndrome, which can become painful after a while.  I remedy with thicker gloves and using my throttle boss and throttle lock. 

[art]

Many (including me) have complained of a harmonic vibration in the grips......mostly the throttle side only.  And only while running at higher speed /rpms for a period of time.  I have thought this was caused by the necessary looseness of the throttle sleeve on the handlebar (and maybe moreso with Kury Iso grips so many of us run).  When it happens I get a tingly right hand, like a funny bone strike or carpel tunnel syndrome, which can become painful after a while.  I remedy with thicker gloves and using my throttle boss and throttle lock. 

Are you riding a harley?

[billyboy]

Not a chance 1998 tour

[big bear craig]

I have noticed this too, but I really didn't feel it until after I cut the piggies.  I'm not sure there is a connection there though.  Maybe different harmonics?  I  have the Kury ISO grips also.

[Patrick]

Are you using an aftermarket trigger wheel ??  Sometimes they will cause it.. These monsters really don't like much ignition advance..

[salty1]

I have iso-grips and do not experience any kind of vibration. Actually I think iso-grips absorbed more vibes than std grips.   

[Jess from VA]

Many (including me) have complained of a harmonic vibration in the grips......mostly the throttle side only.  And only while running at higher speed /rpms for a period of time.  I have thought this was caused by the necessary looseness of the throttle sleeve on the handlebar (and maybe moreso with Kury Iso grips so many of us run).  When it happens I get a tingly right hand, like a funny bone strike or carpel tunnel syndrome, which can become painful after a while.  I remedy with thicker gloves and using my throttle boss and throttle lock.  

Are you riding a harley?

No, but I did ride an EVO for 18 years, and while the bike shook like Parkinson's at idle, it wasn't bad on the road, and with polyurethane handlebar-riser dampeners (and Kury Iso grips).  And my right hand was never bothered.  We're not talking about shaking, it is a vibration at sustained higher speeds.

You know I do have a trigger wheel on one bike, not the other, and I cannot recall if has bothered me on both bikes; it doesn't happen often because I rarely run the slab for very long.  I trade bikes every few months, so I will be watching.

[billyboy]

I have stock grips. would the iso's solve this?

[Chrisj CMA]

I have stock grips. would the iso's solve this?

If its a big enough vibration to need to be "solved" then I may have been wrong to suggest its normal.  I feel a little vibration in the handgrips during a stout acceleration, but others talk about it too, so I feel its normal, and not a problem at all to ignore.  Shouldnt be someting you cant just ignore........more than that and Id look into u-joint or pinion cup before you get stranded on the side of the road

[Jess from VA]

Jeff, this has been reported by a few folks from time to time over the years, and has never been tracked to a defective driveline issue.  I suspect it is normal to the bike, and only bothers the few who are susceptible to a neurological vibration in the hand(s).  Kurys do not solve it, many who have Kury Iso's have reported it (like me).  In the six or seven threads I've read, only one or two guys said they had a problem with the left hand too.

[Chrisj CMA]

Jeff, this has been reported by a few folks from time to time over the years, and has never been tracked to a defective driveline issue.  I suspect it is normal to the bike, and only bothers the few who are susceptible to a neurological vibration in the hand(s).  Kurys do not solve it, many who have Kury Iso's have reported it (like me).  In the six or seven threads I've read, only one or two guys said they had a problem with the left hand too.

I agree Jess....I simply didnt want to mislead the guy into thinking what could be a more severe vibration was still normal.......Its very hard to fully understand the exact trouble someone describes jus ton this here flat screen

[Brian]

On my 97 I am using the OEM grips, the trigger wheel and I have cut the piggies and drilled the first baffle. I have not noticed any vibration.

[sugerbear]

just for s&g try a tank of higher octane.

[CajunRider]

Try a full tank (read, run to reserve before) of REAL gas... not the Ethanol stuff.  I got a tank while on vacation and the bike seemed to run better, easier, and smoother. 

Also try a carb sync if you haven't done that in a while.  Out of balance will cause some (not a lot, but some) vibration. 

Make sure your bearings are good (wiggle the tires while on a jack... shouldn't be any play). 

Take a CLOSE look at your tires... make sure there's no cupping.  It doesn't take much... just a SLIGHT bit of cupping will be exaggerated at speed. 

Beyond that, it's a machine... some slight vibration at certain RPMs is normal, but the Valk is VERY slight on that front.

[texaninsouthfl]

If you notice a minor vibration in the grips you're not going fast enough... go faster. 

[R J]

I would look at the front wheel bearings.

I had a slight vibration way back when I was running all over the US.  It was just warning me I had a bad bearing.   About 8,000 miles later as I was getting on the super slab there was a sudden shudder in the bars and the nose dipped.   50 miles later there was a nice rattle in the front wheel.    It has shucked the bearing out.

Replaced both bearings (97) and no more slight vibration at the dollar mark.

That could or maybe not be your problem.   If the front tire is cupped it will give a vibration in the dollar mark area also.

[Disco]

The buzz bolt thing is a sound, not a vibration in the handgrips.

I didn't hear mine.  I felt it, but more in the footpegs.

[billyboy]

Thanks guys. Going to sync the carbs soon, also going to put on a c/t Falken ze512 and moly paste
all the splines while in there. can I inspect the u-joint without pulling it out? Again thanks. 
                          Bill