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SystemSix feels unbalanced while riding (Need Help)

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SystemSix feels unbalanced while riding (Need Help)

Old 07-26-09, 10:08 AM
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MiniLance
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SystemSix feels unbalanced while riding (Need Help)

I just returned from a two week vacation and I left my SystemSix Cannondale sitting in my AC garage for the duration. Upon returning and beginning to ride again I began to feel the bike wobble to the left every 3-5 seconds.

This is the list of things I have done:

Wheels are perfectly trued (Krysium ES)
Changed Wheels out for a different pair
Had LBS check it over (Only found a little bit of a loose headset)
Wheels are seated properly
Bars are aligned correctly
I've had two different riders ride the bike and feel this slight wobble (Everyone understand how they are in tune with their own bike)
Checked for cracks in the frame (NONE)
Also, I rode my fiance's bike with no issues and could ride a perfect line and felt in control

Symptoms:
Wobbles to the left every 3-5 seconds then returns to the line I am taking (While not pedaling/While Pedaling)
Bike feels like it is controlling me instead of me controlling it (Very uneasy at 30+)


Does anyone have ANY ideas of what this could be?
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Old 07-26-09, 10:14 AM
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Only thing I could of is that the bearing pressure nut isn't tight and your wheels have wobble from left to right, this happened on mine, but you said you tried different wheels.

Could it be cracked, or the slip locks are separating :/
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Old 07-26-09, 10:18 AM
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I have checked both sets of wheels for the bearing =/
Also, my wheels do ride perfect on another bike. Where in the world could their be a crack that would cause this? The bike hasn't been through any trauma or damage. =(
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Old 07-26-09, 10:22 AM
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Have an LBS ride it?
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Old 07-26-09, 10:25 AM
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That's one of the next options but everything on the entire bike has checked out clean so I have no idea what it could be. It's not like I have a wheel way out of true
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Old 07-26-09, 12:01 PM
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Ummm this might be kinda weird, have you checked your saddle for straightness or that one of the rails hasn't come lose?
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Old 07-26-09, 12:20 PM
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Nope, just rechecking and my fizik seat is still all connected. This problem has been driving me nuts. I took it out a little while ago and it just feels like the bike wants to wiggle just enough to drive me insane. On hard efforts I really feel like I could lose control because the wheels honestly don't feel like they are moving straight. I also tried walking with the bike while holding the seat and it rolls in a straight line =/ I'm out of ideas, I truly hope someone reads this and can help me pick at straws at finding the problem.
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Old 07-26-09, 12:23 PM
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I'd say check the headset...
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Old 07-26-09, 12:30 PM
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Headset is fully tight and everything has been checked
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Old 07-26-09, 12:31 PM
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I'd agree with Pete, god I wonder what else it could be... so it's definitely bike related and not wheels, you tried other wheel sets and still had the problem?

That's bizarre
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Old 07-26-09, 12:44 PM
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Different wheels and everything and still having that problem. I also looked everywhere on the frame to make sure there wasn't a crack and NOTHING. Not even scratches
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Old 07-26-09, 12:55 PM
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It's probably haunted by a rider with a huge left quad and an atrophied right quad.
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Old 07-26-09, 01:01 PM
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pull the fork out and check the steerer tube, you sure someone didn't ride your bike while you were away
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Old 07-26-09, 01:03 PM
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you're a hypochondriac?
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Old 07-26-09, 01:07 PM
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Originally Posted by sleazy View Post
you're a hypochondriac?
+1, I think your a head-case....BF handle says it all.

Bring it back to the LBS and see if someone else notices.
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Old 07-26-09, 01:09 PM
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Originally Posted by knucklesandwich View Post
It's probably haunted by a rider with a huge left quad and an atrophied right quad.
How about JUMBO quads? Sprinter build
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Old 07-26-09, 01:42 PM
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You didn't squeeze your top tube right. Tell me you didn't.
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Old 07-26-09, 01:44 PM
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Nope, I honestly wish this problem would be obvious and I could get it fixed. I am going to go out in a little for another ride with another rider and see if they can notice anything different. It's something just a smig off.
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Old 07-26-09, 01:45 PM
  #19  
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Originally Posted by mazdatech10 View Post
pull the fork out and check the steerer tube, you sure someone didn't ride your bike while you were away
This would be my thought as well.
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Old 07-26-09, 01:46 PM
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Originally Posted by Tom Stormcrowe View Post
This would be my thought as well.
What exactly do you think should be there if this would be the cause? Scratch? Bent? Crack? Any Damage?
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Old 07-26-09, 02:05 PM
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Was anyone else home? Maybe someone moved it, (or banged it against something.)
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Old 07-26-09, 02:06 PM
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No one else has touched it even. Not a soul even home
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Old 07-26-09, 02:19 PM
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using the wrong crown race for a given headset can produce similar effects
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Old 07-26-09, 02:54 PM
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It HAS to be something with the headset. If you're at your wit's end, get the whole headset replaced.
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Old 07-26-09, 03:01 PM
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have your fork checked. Some of the cheap carbon forks are out of line. Check your cables, if your cables are too long they can put pressure on your h-bars and make the bike wobble. And check your headset again.
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