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post #1 of 32 (permalink) Old 06-21-2013, 03:47 PM Thread Starter
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Default SEVERE front end wobblee

Doin' about 100 MPH down the highway and the front end starts wobbling pretty badly. I have a 2013 cct. No side wind and not much of a head wind. Throttled down, opened the vents and took it back up to 100 MPH. No wobble. Oh yes, I have the stock windshield on it. To the person who is going to respond, "don't do 100 and it won't wobble", I understand. Just have never had a bike do that before. Had a couple of Visions in my life and it didn't happen then. Thought this might be a CCT thing. Tires seem fine. Only have 600 miles on them. Anyone else experience the same thing. I know in my heart that if I had tried to "power" through it, I would have been a grease spot on the highway. Just curious about wind flow with vents open/closed and why it would wobble like that so much.

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post #2 of 32 (permalink) Old 06-21-2013, 04:02 PM
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Never happened on my 12 XC .. Had it up to 110 MPH Yesterday ..

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post #3 of 32 (permalink) Old 06-21-2013, 04:03 PM
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Quote:
Originally Posted by Squeak View Post
Doin' about 100 MPH down the highway and the front end starts wobbling pretty badly. I have a 2013 cct. No side wind and not much of a head wind. Throttled down, opened the vents and took it back up to 100 MPH. No wobble. Oh yes, I have the stock windshield on it. To the person who is going to respond, "don't do 100 and it won't wobble", I understand. Just have never had a bike do that before. Had a couple of Visions in my life and it didn't happen then. Thought this might be a CCT thing. Tires seem fine. Only have 600 miles on them. Anyone else experience the same thing. I know in my heart that if I had tried to "power" through it, I would have been a grease spot on the highway. Just curious about wind flow with vents open/closed and why it would wobble like that so much.
What is the air pressure in your front tire, and what are you using to check it with?

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post #4 of 32 (permalink) Old 06-21-2013, 04:19 PM Thread Starter
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Just had the 500 mile check up. 38 PSI in the front and 40 PSI in the back. (dealer recommendation). Shocks set at 55 lbs. Have had crotch rockets, cruisers (Honda VTX 1800), tours (goldwing) , 19 in all. NEVER had this problem.

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post #5 of 32 (permalink) Old 06-21-2013, 04:27 PM
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Quote:
Originally Posted by Squeak View Post
Just had the 500 mile check up. 38 PSI in the front and 40 PSI in the back. (dealer recommendation). Shocks set at 55 lbs. Have had crotch rockets, cruisers (Honda VTX 1800), tours (goldwing) , 19 in all. NEVER had this problem.
I believe this will happen in many bikes, but at different speeds. My CB750 would do it at about 15 MPH. My GL1800 at about 30MPH. It just depends on that bike's resonant frequency (along with other things). I don't ride at 100, so I haven't noticed it yet...



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post #6 of 32 (permalink) Old 06-21-2013, 04:40 PM
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Quote:
Originally Posted by Squeak View Post
Just had the 500 mile check up. 38 PSI in the front and 40 PSI in the back. (dealer recommendation). Shocks set at 55 lbs. Have had crotch rockets, cruisers (Honda VTX 1800), tours (goldwing) , 19 in all. NEVER had this problem.
Possible culprits:
- cupped thread (this can be caused by the tire hitting something like a curb in a parking lot, and casing the inner part of the tire to partially tear).
- wheel bearings (rare);
- bent rim (very rare);
- bent fork (very rare).

Most high speed wobbles are rooted into the tire, so you must eliminate the tire as a suspect before you consider the rest.

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post #7 of 32 (permalink) Old 06-21-2013, 04:40 PM
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With a 'tailwind' some bikes can become light in the front, old BMW I had did a high speed SEVERE wobble (110+mph) and crashed... was with a high tailwind at high speed, but that year of BMW was said to have a slightly too short frame length that was later changed... it was a 70's era.

But, those fairings create a whole new world of wind dynamics... I've always ridden NAKED...

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post #8 of 32 (permalink) Old 06-21-2013, 04:47 PM
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Default Wobble

So what does cause this wobble? This is the first time I've heard someone riding a Victory complain about it. I've never come across it since I've been riding. But had heard that it has been and issue with Harley's. Do other make have this issue also? It did hit home when a buddy of mine was heading to Sturgis, not this past one, but the year before and he experienced the wobble on his bike ( he was riding a Harley) and lost control of it. Now he is paralized from the waist down and just got out of the hospital recently from that wreck. Be care with that sh!t, I'd would want to know what was causing it. Good luck.

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post #9 of 32 (permalink) Old 06-21-2013, 04:58 PM
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Tighten your head bearing, a new bike will need it after a couple few thousand K. Road surface is a huge part og head shake as well... I have 4500kms on my bike and can tell I need to tighten up my head bearing, it's gonna seat itself and need some tightening (often overlooked).

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post #10 of 32 (permalink) Old 06-21-2013, 06:05 PM
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I agree with lunatic. Start with triple trees. After switching out my aluminum trees for chrome my bike now has a wobble at about 90mph. I had never noticed it before the switch and i ride fast all the time. It doesn't happen going straight but the second i lean to change lanes....

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