Handlebar vibrations

[Streak]

Ok brains trust, got a problem with Teelas ZZR250 that I am looking for an answer on...

Vibration through the handlebars is giving Teela sore wrists, what could be causing it?

Teelas words"It's not too bad on short rides around town. I was getting a really sore wrist to begin with but was taught a way that eased up my grip and gave me more throttle control. However the constant bounce when on uneven road and the vibration at high speed just gets to me after a while. Maybe I need to just harden up lol"

[StinkyPete]

Are the bar end weights still in place?   Their purpose is to use their mass to dampen vibration.

[Biggles]

It looks like the weights are there.
I suspect the only solution is to reduce the weight on the wrists by sitting more upright.  Resting the fingers on the bars rather than the palms will help in the cruise.

[Streak]

Are the bar end weights still in place?   Their purpose is to use their mass to dampen vibration.

Her bike does not have bar end weights

[Bluey]

A trick I've been told about, but never done, is to fill the bars with lead shot. Take out the right hand bar end, turn the bars until the exposed end is at its highest, then using a funnel pour lead shot into the bars, then replace the bar end. Not sure where you would get lead shot - perhaps a fishing tackle place, or a place that sells the bits to load shotgun cartridges.

Grip puppies are also good at providing a softer grip.

[Biggles]

Her bike does not have bar end weights

Well unwind that grip, remove the end caps and screw in some weights.  They should be a standard thread.  Does Toowoomba have a bike wrecker?  You could source some weights there.

[Streak]

Her bike does not have bar end weights

Well unwind that grip, remove the end caps and screw in some weights.  They should be a standard thread.  Does Toowoomba have a bike wrecker?  You could source some weights there.

I am found to double check but I am sure these are a one piece, I remember noticing that when Leo and I put the grips the bike

[Biggles]

I am found to double check but I am sure these are a one piece, I remember noticing that when Leo and I put the grips the bike

Those shiny caps must come out of the tube.  Then you might try Bluey's lead fill technique.
Sounds like something HD owners do regularly as the lead usually vaporises after a few months of their vibrations.

[Wild Rose]

A bit of an overkill but I have these bar end weights, they are probably heavier than the bike
It is funny that I had them on my Kawasaki GTR1000, it must be a Kawasaki thing
But they were great for taking the BUZZ out of the bars 

 

[Streak]

A bit of an overkill but I have these bar end weights, they are probably heavier than the bike
It is funny that I had them on my Kawasaki GTR1000, it must be a Kawasaki thing
But they were great for taking the BUZZ out of the bars 

 

Do you these spare mate? Could I borrow for the weekend?

[Wild Rose]

Yes you can borrow them as they are surplus to requirements but not for sale 

[Wild Rose]

Just looking at the bar end weights on Teela's bike, they look like they don't have bolt on end to hold on tight
so the heavier weights may be able to be bolted on 

[Streak]

I pulled the grip off this morning, I can't see how I can do bar wieghts, any other suggestions?

[Wild Rose]

A throttle lock or a palm rest work well but may not be good for a new rider
http://oneup.com.au/product/motorcycle-throttle-cruise-control-go-cruise

[nate]

I pulled the grip off this morning, I can't see how I can do bar wieghts, any other suggestions?

Angle grinder...

[StinkyPete]

To test the theory that bar-end weights will help, perhaps you could wrap several layers of some lead flashing around the bare grips, and tape it in place. 

This temporary measure could tell you if bar-end weights will sufficiently dampen the vibration, before cutting the ends off with an angle grinder to permanently fit bar-end weights.   

[Streak]

To test the theory that bar-end weights will help, perhaps you could wrap several layers of some lead flashing around the bare grips, and tape it in place. 

This temporary measure could tell you if bar-end weights will sufficiently dampen the vibration, before cutting the ends off with an angle grinder to permanently fit bar-end weights.   

I have booked the bike into JCR motorcycles here as the ZZR250 vibration issue is a common one apparently, they have a suspicion that it might just be a wheel weight as got new tyres not that long ago.

to be honest i am not keen on taking an angle grinder to handlebars, would rather get GPX bars or something if i had to go to that extent 

[ST2UP]

I missed this post earlier and playing catch up, consider deflating front tyre and braking the bead......rotate tyre 180degrees and reseat bead  Tyre/wheel harmonics are a buggar at times 


 

[saaz]

Check the front wheel/tyre/bearings. As Chris says, odd things can happen with front wheels, and sometimes there are tyres that might misbehave balance wise.

[Tipsy]

  py
another way would be to drill and tap a thread if bar weights are needed 1/2 c worth
 
Tipsy

[Biggles]

another way would be to drill and tap a thread if bar weights are needed 1/2 c worth

If it's only an end-cap there wouldn't be enough metal to tap a thread.

[Panman50]

Hey Streak, had the same problem on my 600.
Mine had the weights, I tried softer grips and rubber dampeners but to no avail.
It came back to getting more upright to reduce pressure on the wrists.
That plus a few more kilos is why I now ride a St.
Regards, Tom.

[Bluey]

Just a thoght - putting a pair of, say, 25mm risers may change the harmonic of the vibration so it may be at a different frequency, and therefore at a different speed. Would also have the added benefit of taking weight off the bars. I would bet somebody on the forum has a pair sitting around.


Sent from my GT-P3110 using Tapatalk

[Streak]

Ok girls and boys, bike is back from the mechanic, below is what he had to say:

Nothing wrong with bike that is easily noticeable

Tightened steering head bearing
Tyre in front is a 110 instead of 100
Front Tyre was out 5 grams

Basically pulled everything apart and put it back together again, everything got a double check

Rode it home, Bike has noticeably less vibration now, feels heaps better 

[Wild Rose]

That sounds great, and probably was good to get another check over before the ride to Inverell