Frontend Wobble - Victory Forums - Victory Motorcycle Forum
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post #1 of 29 (permalink) Old 10-01-2018, 09:52 PM Thread Starter
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Default Frontend Wobble

First, I did a search and so I am preempting with an apology if i missed any relevant posts. I have a wobble upon start up at 10-30 mph. It started in Sturgis and has gotten progressively worse to the point I am not excited to ride the bike. I usually ride two up and have the trunk in-place. Yes, the rear shock is adjusted based on the table in the saddlebag.

Here are the steps I have been through to try and troubleshoot the problem:

1. 2 new Avon Cobras with 5K on them.
2. New wheel bearings front and back.
3. Checked complete front end and tightened up the triple tree.
4. Checked the belt tension, alignment, swing arm.
5. Replaced the front tire with a new one.

I am no closer to resolving this that when I started, but I am quite a bit poorer. The bike has 20K on the clock and I love it, but it just feels unsafe. The wobble goes away at speed. I was sure a belt was lose in front but apparently not. Any ideas would really be appreciated. Thanks.

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post #2 of 29 (permalink) Old 10-01-2018, 10:28 PM
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Mine will once in awhile be more prominent, but it is slowing down and around 15 or slower. On to your issue. You say the front end has been tightened. Does that include the steering head bearings? What about the balance of the front tire? Is it balanced with weights or balance beads?

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post #3 of 29 (permalink) Old 10-02-2018, 12:33 AM Thread Starter
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Thanks for the note. Head bearings are set, front tire is balanced with weights. gm

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post #4 of 29 (permalink) Old 10-02-2018, 07:09 AM
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Tire balance? Purchase a bottle(8oz needed for the front) of Ride-On sealant \ balancer. This stuff has worked wonders for me.
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post #5 of 29 (permalink) Old 10-02-2018, 11:30 AM Thread Starter
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Thanks. I don't think it is a tire balance issue as the wobble pretty much went away when i had new tires installed 5K ago and it has come back progressively. here are no missing weights, so I am unsure, absent a defect in the tire, how it would go out of balance in 5K. Anyway, replaced the tire again, and the problem remains. Does anyone know if the motor is an integral component of the frame? The problem is very present on launch suggesting to me that it maybe a torque issue? I don't know, just looking for suggestions? Again, thanks. gm

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post #6 of 29 (permalink) Old 10-02-2018, 01:27 PM
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most wobbles come from the rear. If you have a jack take rear tire off and have a shop check the balance. Keep in mind it could be bad cords on the inside of tire.
when wheel off check swing arm for side to side movement. Yes it should move up and down with wheel off ground.
Do you feel vibration in floorboards. When you get vibration pull in clutch does it go away. If so it has something to do with driveline. check rear sprocket bolts check front sprocket for in and out movement. Pull seat and check shock rocker arm.
what speed is it when vibration stops
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post #7 of 29 (permalink) Old 10-03-2018, 03:53 PM
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Balance would not be an issue at low speeds.
I'm betting you ran your rear tire below the recommended 40 PSI for a while and the rear tire is cupped.
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post #8 of 29 (permalink) Old 10-03-2018, 11:19 PM
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i have had it in my last 2 bikes and it works great.

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post #9 of 29 (permalink) Old 10-04-2018, 02:12 PM
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Quote:
Originally Posted by PaiN View Post
Tire balance? Purchase a bottle(8oz needed for the front) of Ride-On sealant \ balancer. This stuff has worked wonders for me.
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post #10 of 29 (permalink) Old 10-07-2018, 07:42 AM
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Default Had the Same Issue

Hi,

I had the same issue and it turned out to be the rear tire was just worn out. I have Avon Cobras on my 2012 CCT and though I love, love, love 'em, I wasn't expecting such a short tread life, particularly with the rear tire. That said, I was feeling that front-end wobble starting when going into curves, and it started at about 5k on the Cobras, however I saw no obvious wear on either tire, or anything else that might explain what was going on, but it got worse steadily until I replaced the, (at that point), obviously worn out rear tire. The front tire is in fine shape, it was the rear tire causing the wobble and that was an interesting discovery.

Try a new rear tire as it seems Avon tires start declining around 5,000 miles and deteriorate quickly after that. It took only a short amount of time for the tire to go from looking decent to looking like what it does in the attached image. For what it's worth, I had another Avon Cobra put on the rear.

Safe riding.
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File Type: jpg avon_rear_tire_0.jpg (31.9 KB, 14 views)

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