Low speed wobble....solutions? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 12 Old 08-07-2014, 09:04 AM Thread Starter
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Low speed wobble....solutions?

I noticed on my trip that when decelerating and between 25-35ish I get a handlebar wobble. I can barely feel it with both hands on the bars, but if I take both hands off it's oscillates pretty good.

The bike was loaded, but I was not carrying very much gear and almost all the weight is in the soft saddlebags or a waterproof bag across the pillion. With all the gear off the bike, it still wobbles, but with less vigor. At speed I am not getting any shake & highest passing speed on the trip was around 90mph.

Front wheel bearings sound/feel good, so would the next logical place to look be the head bearings?

15 DL650XT
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post #2 of 12 Old 08-07-2014, 09:30 AM
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The most likely causes are the front tire, either the brand or the wear it has recieved, and the steering head bearings. A bearing problem is usually just about being a little loosely adjusted. Tourance and road or trail attack tires like to wobble even when new for example. Also make sure the fork legs are parallel. A piece of plate glass laid across the fork tubes below the lower triple clamp should contact both tubes along their full length and not wobble.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #3 of 12 Old 08-07-2014, 09:39 AM Thread Starter
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The Battlewings that came on it have about 4K on them. I am trying to wear them down so I can put on tires that are more off road suited. I'll check the head bearings...I think I read somewhere here on a homemade tool...off to search........

found it..Black Lab's tutorial....nice of him to do that for us lowly peasants

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Last edited by Motor7; 08-07-2014 at 09:59 AM.
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post #4 of 12 Old 08-07-2014, 11:19 AM
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I used to have that issue on my Roadstar. Thought it was the bearings. The shop that does the work I can't do carries Ride On. They got rid of my wheel weights, put in Ride On & it never happened again. The stuff works great & is not a messy issue like slime. When I got home from my "fly and ride" to buy my Vee I had them put it in right away. Never had an issue. I also know people who opt for balance beads & have no issues.

Weights are really a poor way to balance tires. As tires wear they really should be rebalanced every so often, but that's a lot of work & no one does that.

Hope whatever the issue is will be an easy fix for you.
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post #5 of 12 Old 08-07-2014, 11:30 AM
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I use Ride-On too. It will work if tire balance is the problem. If it isn't the problem, Ride-On won't help. I had two Conti Road Attack front tires on my Wee. The first one wobbled so badly, I replaced it under warranty. The second one wobbled too but not as badly. Both had Ride-On installed. Front Road/Trail Attacks like to wobble around 40mph. Others have posted the same issue.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #6 of 12 Old 08-07-2014, 11:43 AM
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Generally the flatter the profile of the front tire and the more the front tire is unloaded the more likely the front is to have this low speed wobble.

A tire might not do it when you put it on but can gradually start doing it as it wears and the profile becomes flatter.

..Tom

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post #7 of 12 Old 08-07-2014, 11:43 AM
 
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I had a brand new Triumph that wobbled from day 1, I took it back to the dealer a couple of times, they checked everything and rebalanced the tires and it still wobbled. I began to think that the wheel or tire had a slight deflection so I elevated the front tire and laid a fixed pointer to the edge of the rim and slowly rotated the tire, the rim was perfectly true. Then I repeated the process with the pointer just touching the edge of the tire and when I rotated it I noticed in one spot it had about an eighth of an inch sideways deflection. It didn't look like much but I replaced the front tire and problem solved. I could let my hands off the bars at 50mph and coast down to about 20 mph and it was rock steady. Took a lot of phone calls and hassle but Triumph finally reimbursed me.


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post #8 of 12 Old 08-07-2014, 12:29 PM
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Quote:
Originally Posted by greywolf View Post
I use Ride-On too. It will work if tire balance is the problem. If it isn't the problem, Ride-On won't help.
I agree. I shared that because sometimes people waste time and money chasing a solution that isn't necessarily the solution.
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post #9 of 12 Old 08-07-2014, 01:52 PM Thread Starter
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Hmmm, never heard of Ride On. I was never a fan of Slime, but this stuff is different. Looks like the balancing benefit is more important than the puncture prevention....might have to give it a try.

Have the bike up on the jack. Head bearings don't feel loose, no grinding etc. Handlebars are extremely easy to turn though...zero resistance.

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post #10 of 12 Old 08-07-2014, 03:07 PM
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The amount of force required to move the handlebars with the front wheel in the air is very small, a pound or less. There is a rule of little finger rather than a rule of thumb. With the wheel in the air, extend the little finger downward and push the hand grip with the face of the fingernail until the bar moves. The proper bearing setting should cause only the joint nearest the tip to bend. If the finger does not bend at any joint, the bearing is too loose. If it bends at more than one joint it is too tight.

It isn't a terribly reliable test but it will give some idea of the forces involved. If it works as advertised you're probably fine. If not, do a proper test with a spring scale on the outer end of a hand grip. It should read between 200-500 grams to start turning the handlebar.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general...nicknames.html

Please vote in the poll on what Strom(s) you have at https://www.stromtrooper.com/informa...-you-have.html
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