| Author | Message | ||
     Pontlee77 |
I was riding for quite while on a long straight with no traffic i pushed the bike to a 100MPH when a released the throttle i started to have a shake on the handlebar it was quite frigtening, i have a tall wind shield, barkbusters had guards with bar end weights, the tyres are Michelin pilot power 2ct, the rear is quite worn in the center, the front is at half it's life. what do people think of the tyres: Dunlop sportmaxx qualifier? | ||
| Kennywiz |
The beginning of a "Tank Slapper". You are on the gas, unloading the front, and then let off, loading the front quickly and at high speed. One of the reasons many sportbikes have a steering damper. The Uly faithful will tell you this bike doesn't need it and this can be tuned out via the suspension. It could but even with a professionally set up suspension, the shake may still present itself. I had a former pro rider friend over yesterday to tweak my suspension. He feels that the ability to easily turn the front at low speeds could be the cause of some of the front end issues I was feeling. He wanted to tighten the steering stem to "tighten" the "feel". Per the manual: "With the clutch cable disconnected and starting from full right, it should take a 1 to 7 lb pull at the outside of the axle to turn the forks." I have to do some research. Don't want to tighten too much and cause premature steering stem bearing failure. | ||
| Ratbuell |
Tire pressure can do it as well as tire wear or neck bearings. | ||
| Timbobuell |
Had same issue, windshield and tire. Mounted new tire (same), problem went away. | ||
| Buewulf |
You can improve that with suspension tuning, but you certainly can't eliminate it all of the time. It is caused the the front tire loses traction and regains it when misaligned with the rear. Since you were just accelerating then loading the front end by coming off the gas when it happened, it does suggest that you could benefit from compression and rebound settings on the fork as the front wheel apparently came airborne for a fraction of a second, I'd guess from a "pogo" affect caused by the fork rebounding to quickly after the initial compression. We sit pretty upright on our Ulys compared to a sport bike. That means we typically have much less weight on the front wheel and also a tighter grip on the bars, both of which compound headshake and contribute to a "disconnected" feel with the front end. | ||
| Etennuly |
Mine wanted to do that a bit with a worn front tire and needing the steering head re torqued. I found that if you raise the front tire off the ground and feel no resistance turning the bars left to right the bearings need to be re torqued. Mine just kind of flopped from center fairly loosely. The torque setting fixed the ride feel quite a bit. | ||
| Pontlee77 |
Thanks for the replies, i can see what you mean i guess i should have released the gas a bit slower to make it easier to the front end. About suspension settings i followed the manual just added a bit more preload on the rear due to the preload know problem that over the years it looses presure. | ||
| Buewulf |
Try a bit more rebound damping than what the manual suggests. I can come off full acceleration into hard braking (to the point of nearly bottoming the fork) without any shake. So I don't think letting go of the throttle is your problem. Also keep in mind that the maintenance items mentioned by others such as low tire pressure, improperly torqued steering head, etc. can cause that issue too. | ||
| Terrycoxusa |
That's why all the other ADV bikes have frame mounted fairings. I have a larger windshield on my Uly and I can feel it starting to get squirrely about 80, the wind is loading the handlebars and front forks. With a frame mount fairing the force goes into the frame. My solution? Keep it under 80. | ||
| Uly_man |
This bike is unbalanced either through suspension settings and/ or tire pressures. Two other things. ONE. As good as the Ulys suspension is it WILL, like other bikes, degrade over time/ miles. FACT OF LIFE. Saying that though I find mine is sill "as new" at 15k miles. TWO. The book settings are a GUIDE and not a stone cold fact. You need to set it up for the individual RIDER and there STYLE of riding. And NO two people are the same in this regard EVER no matter what they may say. Many people are a "bit scared" of taking advantage of the fully adjustable suspension on a bike. I have seen it many a time. Yes it might seem complicated but if you are willing to learn how to do it it will reward you in a BIG way. And none more than a Uly that I have found for road work. | ||
| Glenn |
Had the same issue when my rear tire was almost worn out. |
