Lots of wheel wobble

[Jack the Smack]

I am wondering what exactly is making my bike wobble at high acceleration. If I accelerate really hard in first gear while leaning back and do an obviously intentional power wheelie, then set it down it's fine. However, when I am tucked in and accelerate hard and let the front wheel hover an inch off the ground the thing goes into a crazy wobble as the front wheel kisses the ground. When this first happened I dropped the throttle and it got worse but it recovered due to the dampener. Accelerating out of it while sitting up gets me out of it, but when I'm tucked it just wobbles like crazy.

 

[KazMan]

I would venture to say that you are not only twisting the throttle, but are pulling on the right bar as well when you are in a tuck.

 

[Rob]

Exactly? Poor technique...

Seriously... I dunno. :confused

I'd screw with my suspension settings until it fixed itself. arty

 

[mototireguy]

Double check the wheel balance.

If balance is confirmed then the next items to check would be the steering head bearings and the wheel bearings.

 

[Jack the Smack]

I would venture to say that you are not only twisting the throttle, but are pulling on the right bar as well when you are in a tuck.

I hope this is it, definitely an "easy fix". I do turn the wheel to the side every time I do a power wheelie.

Double check the wheel balance.

If balance is confirmed then the next items to check would be the steering head bearings and the wheel bearings.

Alright, if it wobbles even when light on the handlebars I'll try this.

 

[fasteddie_rr]

You describe whats sounds like the begining of a simple tank slapper but too many variables exisit for root cause analysis.
I can usually determine root cause as rider cuz you begin to feel whats wrong when it goes wrong givin the specific riding scenario.
If you know your suspension is solid (I still have mine set up for me then fine tune) then try adjusting dampner to exclude shake while leaving some room for steering control. I have all the goodies and I still get a little shakin action on hard acceleration out of certain corners but tend to just ride it out.

Which Bike? Are your forks runnin soft/mushy? Dampner type and setting? Fork oil fresh? last dampner oil change? Previous accidents?

 

[fasteddie_rr]

I would venture to say that you are not only twisting the throttle, but are pulling on the right bar as well when you are in a tuck.

Great point, had not considered.

 

[Z3n]

Relax on the bars. My 929 would headshake like crazy because I was stiffarming the bars...any literbike will wiggle a bit when you gas it hard and the front starts to lift, but it's a thousand times worse if you're not really light on the bars.

 

[fasteddie_rr]

:rofl:rofl

Im ready to tear the suspension down and do viscosity studies and forgot the first variable to be considered.... the rider.

 

[louemc]

I would venture to say that you are not only twisting the throttle, but are pulling on the right bar as well when you are in a tuck.

Sounds right to me, maybe combined with the body position, under hard acceleration, the arms are stiffer (using the wrong part of the body to brace against the acceleration).

I'd think mechanical issues would be mechanical all the time (or at least way more of the time).

 

[Jack the Smack]

Turns out it was an EBHS (Error Between Handlebars and Seat)

 

[Archimedes]

And it's DAMPER, not DAMPENER!!!!!

C'mon people. Got I hate to hear some say steering dampener. Almost as much as when the fucktard hockey announcers say '...cleared but not out!' If it didn't get out of the zone, it's not cleared you retard!!

 

[PhaTeLeSS]

And it's DAMPER, not DAMPENER!!!!!

C'mon people. Got I hate to hear some say steering dampener. Almost as much as when the fucktard hockey announcers say '...cleared but not out!' If it didn't get out of the zone, it's not cleared you retard!!

lol, I wasn't going to say anything, but I'm glad you did.

DAMPEN = to get wet
dampener = "wetting" device

A steering DAMPER is to "dampen" or "soften" steering input, such as headshake. :rolleyes

 

[Junkie]

And it's DAMPER, not DAMPENER!!!!!

C'mon people. Got I hate to hear some say steering dampener. Almost as much as when the fucktard hockey announcers say '...cleared but not out!' If it didn't get out of the zone, it's not cleared you retard!!

a leaky Scotts damper would get your steering head wet... would that be a steering dampener?

 

[louemc]

a leaky Scotts damper would get your steering head wet... would that be a steering dampener?

No that would be a steering head oiler :laughing

 

[benjamac]

I would venture to say that you are not only twisting the throttle, but are pulling on the right bar as well when you are in a tuck.

yes, yes. while the tire is "kissing the ground" it is hooking up just a little bit, causing it to wobble- nothing wrong with suspension, just put more weight forward or wheelie the thing- the problem is that it is in between the two.

 

[russ69]

yes, yes. while the tire is "kissing the ground" it is hooking up just a little bit, causing it to wobble- nothing wrong with suspension, just put more weight forward or wheelie the thing- the problem is that it is in between the two.

This is it. Mechanically you can put more weight on the front by raising the rear or lowering the front. Be aware that will quicken the handling.

 

[louemc]

yes, yes. while the tire is "kissing the ground" it is hooking up just a little bit, causing it to wobble- nothing wrong with suspension, just put more weight forward or wheelie the thing- the problem is that it is in between the two.

There is another choice, put more weight forward, and get on the gas harder, so you also loft the front tire in a power wheelie.

Wait..does this highly illegal behaviour require a disclaimer? :rofl