CBR 600F2 1991 - 1994 CBR 600F2

tire wobble

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  #1  
Old 05-27-2013 | 01:14 PM
hindsey123's Avatar
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Cool tire wobble

ok guys this is probaly a stupid question but at 45-55 mph i get a slight front tire wobble when i take my hands off the bars not bad enough to make me nervious but i want to get it fixed before it gets worse what can cause it? more info the better i will check every possibality just to be safe thanks
 
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Old 05-27-2013 | 06:31 PM
CorruptFile's Avatar
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Could be a few things. How are your tires? Usually issues like that are caused by a harmonic imbalance. I'd check your tires, check for a bent wheel, bent forks, aligned rear tire, bearing condition. That being said, all bikes have a certain degree of wobble. Steering dampers help this, but aren't a cure if something is actually wrong. Bar end weights help with vibration/wobble too.
 
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Old 05-27-2013 | 06:38 PM
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or the wheel weights fell off.

When you install a tire and 'balance it' you add weights... they sometimes fall off
 
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Old 05-27-2013 | 09:46 PM
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thanks for the help guys ill look and see what i can find out the forks are not bent and there are no wheel weights the tire is balanced with beads or something like that inside the tire its self so here is another question are the wheel weights or the bead stuff better for balancing a tire?
 
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Old 05-27-2013 | 09:49 PM
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How old is the tire and how much air is in it?
 
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Old 05-28-2013 | 01:56 PM
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Rock the tire side to side at the 12 o-clock position and see if you feel any play in the bearings.

Also lock the front brake and rock the bike front to rear with one hand on the headtube where the lower bearing races meet the triple. Check for any play there.

the beads you mention are called dynabeads - google em. There's been a thread or 2 around CBRF talking about them and if they work or not. easiest thing to do is have a shop spin your wheel up on a balance machine and check it. If it is good, and you took them your wheel off the bike, shouldn't cost you but a few bucks. If it needs weights, then they can help you there too.
 
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Old 05-28-2013 | 02:57 PM
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Originally Posted by hindsey123
...there are no wheel weights the tire is balanced with beads or something like that inside the tire its self so here is another question are the wheel weights or the bead stuff better for balancing a tire?
I wanted to try the Dyna Beads out, just because the concept behind them dynamically balancing the tire as it rotates, seemed like a more precise method, and, I think wheel weights are ugly, and would have been more than happy to eliminate them!! Also, when you race, you have to duct-tape over the wheel weights, which is even more of an eyesore!

Anyway, I'm running Dyna beads with the race bike, including the rims for rain tires, and I ran them on the street bike, and I have not encountered any vibrations at any speed, at all.

1 oz for the front - 2oz for the rear.
 
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