Originally Posted by Wayne (Post 96982)

Sorry, I lost the attached files somehow - well I will try again.

Originally Posted by Wayne (Post 96981)

In the attached photos you will see that I moved the levers (clutch and brake) inward about 7mm and I used a 16mm diameter washer in the end of the bar for about 1.2mm extra clearance. The result is that the levers still clear everything, the TT guards still clear the Puig screen at full lock and my hands no longer go numb and almost drop off!
Just one more small adjustment to make and that is to clear a little bit of plastic with a dremel where the original end weights screw through the guards and into the end of the bars, this will make it fit nice and flush for that "factory", look, just add a drop of thread lock and we are done!

Originally Posted by scottnet (Post 97169)

Double check all your engine bolts are torqued up correctly. That made a big difference to mine

Originally Posted by josephau (Post 105489)

For those few unfortunate ones like me who have the bike vibrate - or I should say 'shakes' - around 3.5k and 4.5k rpm, I believe I have found a solution after over a year and 16k km.

Before I hand the answer to you, just to recap:
- to me, the bike 'shakes' more than 'vibrates' at that rpm range, the most intrusive is when it's full tank. This happened since day 1 with stock handlebar and bar-end weights, and I told the dealer's chief mechanic who told me it's because of the plastic tank, and we all know it's BS.

- Hoping some improvements, I then changed to Magura handlebar and no bar-end weight, but hope was dashed and the 'shaking' remains. I'm convinced this is beyond the normal vibration from a single cylinder bike.

- I had succeeded once by turning all the screws on and near the handlebar areas to the torque level according to the repair manual, but could not find that sweet spot again after I changed something.

- It did get smoother with age, but it was still annoying, it really took out the fun.

- After I discovered the bashplate cracked at the bolt area, which I hoped it was the cause of the shaking, the dealer replaced with a new one, but the vibration or the 'shaking' got worse.

- I took it back to the dealer, had them compared to their test bike, and finally they agreed reluctantly that there was something wrong, and called the chief mechanic of Yamaha Germany in Stuttgart to come take a look.

- He looked, insisted the bike was fine, but did agree the 'vibration' was too much in that rpm range. So he asked my dealer to: 1) adjust the EFI, and 2) give me a new bar-end weight which is different from the stock. This bar-end weight allows a long screw go through (not thread through) and even attach to the acerbis handguard anchor inside the handlebar.

- The adjustment and the bar-end weight helped, but the 'shaking' is still noticeably there.

- Then I stumbled onto this: www.vibranator.com. Funny name, but I thought I would give it a try with USD70, afterall it claims it has technology from helicopters.

- I installed the vibranator without the bar-end weight as I thought if it works on a helicopter, I need no bar-end weight.

- This vibranator alone does two things: 1) it kills whatever resonance at any rpm range, and 2) it shifts the 'shaking' range to a bit higher range.

- I uninstalled it, and reinstalled it WITH the bar-end weights this time. Smooth!! I no longer know where the 'shaking' range is or if it exists anymore. I rev the bike from idle to 6-7k rpm and I notice no annoying 'shaking' or wild vibration for that matter. It still works at full tank too, which is the ultimate test. Now as if the bike gets a new life, and I find a new level of fun with it.

Originally Posted by gregor (Post 111882)

Well I've removed the tank and re-seated it but still no remedy to the harsh vibes.

I've posted in Ask Kev if anyone else is interested.

This has got me worried.

http://www.xt660.com/showthread.php?t=12241

Originally Posted by josephau (Post 105610)

Well, there is not much to see really once it's installed. The pic below shows a different bar-end weight from stock provided by Yamaha. There is a hole in the middle to allow the screw to go all the way through, not threaded through though which I think would be better to give it a tighter fit. Admittedly, it's not the prettiest setup. I would like the bar-end weight inside the handguard, but oh well.

http://i440.photobucket.com/albums/q...ah/photo-4.jpg

Here ( http://www.vibranator.com/ProductDet...D710%2DN%2D003) is the vibranator. Mine is slightly different as it is for use WITH the handguard. Mine doesn't have the rubber at the end. Instead, a threaded hole is at the end of the shorter cylinder, which allows a long screw go all the way from the bar-end weight, through the handguard anchor, and connect (loctite) to the vibranator. The vibranator has some weight, but not a whole lot. With the setup, the vibranator doesn't touch the inner wall of the handlebar. Hence, it allows the resonance from the vibration to dissipate, so it claims, and it works for me. Some bloggers even say it is better than Flexx handlebar, foam handgrips, and other products that claim the same thing. Best result still comes from the combination of both the bar-end weight and the vibranator IMHO.

Originally Posted by josephau (Post 111893)

Have you tried this: www.vibranator.com?

I had the same problems since new for over 16000km or 1.5 years, and I had done the re-torqueing of various nuts and bolts, then came across the above. I had to combine that with bar-end weights to give me the best result. Still it wasn't noticeable immediately after installation, it took about 100km or so for everything to settle in, and it does seem it works. Now it's the smoothest since I got the bike.

What also came to mind is my dealer did an adjustment to the injection and the exhaust. I am not very technical, but I believe it might have to do with the way the airflow/fuel injection relates to the engine performance. I suppose the purpose of a PC of smoothing out the engine has something to do with this vibration problem, instead my dealer has the equipment to do the modifications directly. Mind you, the result still wasn't great after such adjustment by the dealer. The best result I have is from the combo of vibranator and the bar-end weights. Hope it helps.

Originally Posted by Jami (Post 111930)

Hi josephau

Do you know who has made those bar weights? I would be interested in getting ones because I also have a Magura handlebar with Acerbis handguards so I can't use the original weights.

Jami

Originally Posted by josephau (Post 111991)

It's from my yamaha dealership. If I did it all over again, I would get the barkbuster hand guards as they come with the bar end weights that go betwn the guards and the handlebar, not outside the bar like mine which is not the best looking.

Originally Posted by hammerhead (Post 96256)

i am getting vibration around 3500 revs. the only mods i have done is a taller puig screen and some touratech handguards have checked all fixings. anyone with a similar setup also having problems.

Originally Posted by klonkie (Post 114156)

I've found my bike picks up a very noticeable vibration at EXACTLY 114km/h (70.8m/h). Very weird. I don't have to look at the speedo, I just know when I'm at 114km/h. It's not the handlebars, it's the whole bike.

It's something I can get used to. But I was wondering if anybody else was having the same thing?