Speed Wobbles - Page 2 : Yamaha R6 : R6 Forum

» Insurance
» Sponsors
» Yamaha YZF R6 Prices
Go Back   Yamaha R6 Forum: YZF-R6 Forums > R6 Community Topics > General Discussions

Reply
 
Thread Tools Display Modes
Old 11-20-2012, 05:35 AM   #11
ChiefSmokeDawg
Parts Pimp
 
ChiefSmokeDawg's Avatar
 
Join Date: Sep 2009
Location: JerZ
Posts: 25,637
Bike: 2002 R6, 2008 R6
Re: Speed Wobbles

Must be the balance beads
__________________
CONTACT/EMAIL ME HERE



My 02 Thread My 08 Thread
RIP BALLISTIK: We miss you Ricky!!!
Ask about:-STAHLBUS- -WOODCRAFT- -MOTUL- -FERODO- -BRAKE TECH- -BMC- -Battery Tender-LEO VINCE- -XT-RACING- -NGK- -SUOMY- -EBC- -Pro-Grip- -Canyon Dancer-
ChiefSmokeDawg is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-20-2012, 05:37 AM   #12
My94GT
Premium Member
 
My94GT's Avatar
 
Join Date: May 2011
Location: MD
Posts: 7,887
Re: Speed Wobbles

Quote:
Originally Posted by shad0ws View Post
You could have had too tight of a grip on the bars the first time you smacked it.

Sent from my SPH-L710 using Motorcycle.com App
this, once you hit it you went all gigity and what not and prolly grabbed them too tight.
__________________

sig by milko
my build thread-
http://www.r6-forum.com/forums/showthread.php?t=152740
My94GT is offline   Reply With Quote
Old 11-20-2012, 05:48 AM   #13
TinyDancer
Resident Bulgarian
 
TinyDancer's Avatar
 
Join Date: May 2012
Location: Little Asia, IN
Posts: 1,545
Bike: '12 R6
Re: Speed Wobbles

I get the wobbles when I grab it too tight...
__________________


KCCO
TinyDancer is offline   Reply With Quote
Old 11-20-2012, 06:49 AM   #14
natedogg624
I eat my R6
 
Join Date: Dec 2007
Posts: 1,908
Re: Speed Wobbles

do not use balance beads evar.
__________________
Nathan - #425 - 07 Yamaha R6
35 Motorsports, Vortex Racing, Pit Posse Motorsports, Spy Optics, Suomy Helmets, 614 Paintworx, Optimal Racing, GP Tech
Nationwide Children's Hospital/Ohio Motorcyclists for Children
The Retrofit Source
natedogg624 is offline   Reply With Quote
Old 11-20-2012, 06:56 AM   #15
Tribalic One
This is bat country!
 
Tribalic One's Avatar
 
Join Date: Jul 2011
Location: Conway, AR
Posts: 1,870
Bike: 2005 white/red R6
Re: Speed Wobbles

Quote:
Originally Posted by natedogg624 View Post
do not use balance beads evar.
I've been using Dynabeads in my last couple sets of tires without any issue. Have you had a bad experience with them?
Tribalic One is offline   Reply With Quote
Old 11-20-2012, 07:07 AM   #16
ChiefSmokeDawg
Parts Pimp
 
ChiefSmokeDawg's Avatar
 
Join Date: Sep 2009
Location: JerZ
Posts: 25,637
Bike: 2002 R6, 2008 R6
Re: Speed Wobbles

Quote:
Originally Posted by Tribalic One View Post
I've been using Dynabeads in my last couple sets of tires without any issue. Have you had a bad experience with them?


The general consensus has been they really don't work. There's been a bunch of threads. Derffred works at a Benz dealer where he actually has a high speed balancer. This dude even had a shitty experience with the beads.

Have a good laugh at this thread. Especially when the Drill-do talk starts.
http://www.r6-forum.com/forums/showt...=153959&page=5
__________________
CONTACT/EMAIL ME HERE



My 02 Thread My 08 Thread
RIP BALLISTIK: We miss you Ricky!!!
Ask about:-STAHLBUS- -WOODCRAFT- -MOTUL- -FERODO- -BRAKE TECH- -BMC- -Battery Tender-LEO VINCE- -XT-RACING- -NGK- -SUOMY- -EBC- -Pro-Grip- -Canyon Dancer-
ChiefSmokeDawg is offline   Reply With Quote
Old 11-20-2012, 07:27 AM   #17
Tribalic One
This is bat country!
 
Tribalic One's Avatar
 
Join Date: Jul 2011
Location: Conway, AR
Posts: 1,870
Bike: 2005 white/red R6
Re: Speed Wobbles

Quote:
Originally Posted by ChiefSmokeDawg View Post


The general consensus has been they really don't work. There's been a bunch of threads. Derffred works at a Benz dealer where he actually has a high speed balancer. This dude even had a shitty experience with the beads.

Have a good laugh at this thread. Especially when the Drill-do talk starts.
http://www.r6-forum.com/forums/showt...=153959&page=5
Definitely a good read. It seems they start having issues under track use. I wonder if it's a heat issue. I've ran two sets of tires with beads, on the street, without any issues. I've had her up to speed a few times. :rook

I plan to start getting up to Hallet next season. So I will keep this in mind when I come due for new rubbers. Pretty sure I'm giving the Power Pures a try this time around.
Tribalic One is offline   Reply With Quote
Old 11-23-2012, 10:12 PM   #18
Chadwick85
R6 > Anything
 
Join Date: Nov 2012
Posts: 4
Bike: 2004 Yamaha R6
Re: Speed Wobbles

Too tight on the grips, or too loose on the grips can do it too bud.

First sportbike ever, honda cbr 600, 3 years ago, was doing 65 on the highway and went no hands to stretch the back, next thing i knew the front tire was doing the chickin, and I filled my pants.

relaxed grip is the way to go sir!
__________________
04 Yamaha R6 :

Sick DND Exhaust
Custom Blue Shorty Levers
Custom Blue Windscreen
Intergrated Signal Lights
Fender Eliminator Kit

BEAST
Chadwick85 is offline   Reply With Quote
Old 11-24-2012, 12:56 AM   #19
BootiHole
Lol
 
BootiHole's Avatar
 
Join Date: Sep 2011
Location: Bay Area, CA
Posts: 120
Bike: 2007 Candy Red R6
Re: Speed Wobbles

Yup, too much grip/weight on the bars.
__________________
07 Candy Red R6

SpeedoDRD
BMC Race Filter
Shermoto Levers
15T Front Vortex Sprocket
Hotbodies Racing Undertail
AGG Racing Smog Block Offs
DDM Tuning 4500k Slim HID Kit
ECU Reflash by ChiefSmokeDawg
Pro Grip 724 Dual Density Road Grips
Pro Grip Black Carbon Fiber Tank Pad
Hotbodies Racing Flush Mount Signals
Full Yoshimura Carbon TRC Exhaust System
SKUR Black Carbon Fiber Triple Tree & Gauge Cover
BootiHole is offline   Reply With Quote
Old 11-24-2012, 09:37 AM   #20
luke geis
crashing aint so bad
 
luke geis's Avatar
 
Join Date: Nov 2006
Location: santa barbara, ca.
Posts: 2,267
Bike: 2005 red r6
Images: 10
Re: Speed Wobbles

If you get speed wobbles while off the gas and no hands on the bars, it's because you are off the gas. Not because of anything else other than a bump perhaps. Remember that the bike has rake designed into it for directional stability. But as with most sport bikes the rake is a fairly small amount. So the tire has very little directional stability in general. The only thing that really keeps the tire in line is it's inertia, hence the gyroscopic effect. Being on the gas unloads the front end allowing it to react in the manner in which it was designed, but also makes inputs easier to manipulate the tire. The grip from hell fights the natural movement of the tire over road imperfections. This in turn leads to a deflection in the opposite direction, which cycles and repeats.

When wobbles occur off the gas and with no hands on the bars it's very much the same thing. The difference is that instead of an opposing input at the bars, it's the weight transfer over the front tire that is exacerbating the issue. The front tire while decelerating becomes weighted down beyond it's static load. This adds force to the suspension and when a bump is hit, it reacts similar to holding the bars too tight. The tire deflects and is slow to react but once it gets moving, it moves too far in the opposite direction. The tire again deflects and is impacted by the road imperfections and the cycle repeats. In general having a light grip on the bars would eliminate that issue, also being on the brakes would again counteract the issue. Mostly because the energy would be transferred through the bike differently. While on the brakes the suspension goes through a major geometry change, making the issue become a different beast. This is why a bike is unstable ( usually while hard on the brakes ) and the rear tire will wallow around. Because so much weight is on the front tire, instead of it moving, the now lighter rear part of the machine moves and shifts under the inputs.

A good way to test this theory is to get up to a normal speed and let off the gas. Then let the bars go. Then with one hand give one of the bars a solid whack. The bike should go into a speed wobble. It should also quickly sort it'self out. Not an idea of fun, but you can do it on your bicycle as well.

The wobble is a needed and appropriate reaction from the machine. It will almost always work it'self out if allowed to do so. This is why it is said to let the bars go when one occurs. This is so you don't fight it. The speed wobble is not a bad thing, but it's not a good thing either. It is a needed reaction in order to deal with the problem that created it, but it is non productive to directional control too. There are two ways to eliminate a wobble. One is to let the bars go and or relax your grip on them. The other is to get on the gas harder to unload the front end even more and hopefully arrest the wobble. The later is difficult for beginners and is difficult to do on bike without lots of power. Even a 600cc machine can be under powered to deal with it with the second approach. The easiest way to reduce the potential for a wobble is to maintain a feather grip on the bars and remember to relax even more when one does occur.
__________________
luke geis is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone ever had speed wobbles before? MichaelGulland General Discussions 29 08-15-2012 10:34 AM
Speed DRD cc25R6 How To's... 1 03-30-2010 11:43 AM
Top Speed? zzzr6 Drag Race Section 27 03-23-2010 05:21 PM
high speed wobbles Mkiv Suspension settings 27 10-03-2006 08:04 PM
Steering wobbles 01 R6 RocketR6 General Discussions 8 11-22-2004 05:21 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 01:53 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum
R6-Forum.com is an independent Yamaha enthusiast website. Content on R6-Forum.com is generated by its users and R6-Forum.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.