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+--- Thread: Handlebar wobble at speed (/showthread.php?tid=77036)
Handlebar wobble at speed - b1k3rdude - 30-11-16
Even though I have devileyam R6 shock fitted I am getting a wobble from the handle bars while accelerating at high speed.
Is there a relatively simple way to reduce or better, cure this without going down the steering damper route..?
Re: Handlebar wobble at speed - b1k3rdude - 01-12-16
More info -
- Moving the handlebars from left to right - smooth, One finger from left to right with zero distortion.
- Tyres - I have a set of Pilot Road 2's on the bike since the summer, around about 2,000 miles done on them.
- Forks - completely rebuilt back in the summer.
- Weight - well I weigh about 93kg withpout gear, no topbox.
- I don't take my hands off the bars, but it does it hands on or off.
Re: Handlebar wobble at speed - Graham53 - 01-12-16
Have you dropped the yokes down the forks or if so how much ? I got similar on my foxeye 600 when I fitted a jack up kit and dropped the yokes , I raised the forks back to normal and it cured it. Not sure if it is correct but I was told that dropping yokes quickens the steering but reduces high speed stability.
Re: Handlebar wobble at speed - b1k3rdude - 01-12-16
Forks have not been dropped through.
Pilot road 2's are good tyres but I wonder if they are part responsible for the wobble...
Re: Handlebar wobble at speed - red98 - 01-12-16
Had the same wobble on maximum acceleration
turned out to be swing arm bearings.....hows your tyre pressures ?
Re: Handlebar wobble at speed - Graham53 - 01-12-16
If yokes at normal height the only other things I could think of might be , wheel bearings , wheel balance and as previously said tyre pressures
Re: Handlebar wobble at speed - b1k3rdude - 06-12-16
Checked TP's and they were both below normal, corrected that and the wobble is mostly cured. I can still make it 'wibble' at speed or under acceleration, and I am fairly sure the swing arm bears are fine (there were last MOT and the bike hasnt done much miles since then.
Re: Handlebar wobble at speed - red98 - 07-12-16
How many miles since last checking the pressures ? Could be unusual tyre wear due to incorrect pressures....I would run it as it is for a couple of hundred miles until the tyres are wearing normally. .....strange things tyres
Re: Handlebar wobble at speed - ram - 07-12-16
are the balance weights still on? i lost one of mine once with a pressure washer
Re: Handlebar wobble at speed - b1k3rdude - 08-12-16
(07-12-16, 07:38 AM)red98 link Wrote: How many miles since last checking the pressures ? Could be unusual tyre wear due to incorrect pressures....I would run it as it is for a couple of hundred miles until the tyres are wearing normally. .....strange things tyresI normally check once a week, but forgot
None of the FZS1000's I have owned have never what I would call rock sold full stable at speed or under high speed acceleration, and this was confirmed when I bought a 1200 bandit. which is like a tank when it comes to high speed stability and wind protection when compared to the FZS.
Re: Handlebar wobble at speed - devilsyam - 08-12-16
try this ==under hard acceleration the rear is loaded hence the swinging arm bearing post which is a good line to follow mots look for excess play only small play is undetected till loaded
also try going up 1 click on preload this will make the rear harder and place load on the front
worth a go
Re: Handlebar wobble at speed - b1k3rdude - 09-12-16
(08-12-16, 10:49 PM)devilsyam link Wrote:
- swinging arm bearing play is undetected till loaded
- also try going up 1 click on preload this will make the rear harder and place load on the front
- Good info, will get a new set of bearings and swap them out asap. Will 3rd party be good, or better to go genuine..?
- Will do, thanks for the tip fella. (@all, this info is relevant & usefull because I have one of DY's R6 shocks on the bike atm.)
Re: Handlebar wobble at speed - devilsyam - 09-12-16
i have used the ones from simply bearings of ebay but try the preload as its free to do before buying bearings
Re: Handlebar wobble at speed - b1k3rdude - 09-12-16
(09-12-16, 09:56 PM)devilsyam link Wrote: i have used the ones from simply bearings of ebay but try the preload as its free to do before buying bearingsTa and will do.