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Old 11-14-2007, 04:20 PM   #1
mellow
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need help!!!

i have an 04 cbr and just recently the front end started to shake like if it was a mini tank slap any one have any advice?? or know where i could get a quote to fix it?
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Old 11-14-2007, 04:24 PM   #2
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Depending the situation it occurred

If it was at a higher rate of speed I recommend a
steering damper

call Motorcycles Unlimited
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Old 11-14-2007, 04:30 PM   #3
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Take to Motorcycles Unlimited and have them check it out but if it just started happening it might be the front is out of balance or you need a new tire..
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Old 11-14-2007, 04:52 PM   #4
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Could be all kinds of things. You're a little vague on the how/when/where of the problem, I'll throw out that you could have low tire pressure, tire out of balance, bent wheel, worn/ loose steering head bearings, bad wheel bearings, loose axle, sticky calipers, warped rotors, or a bad tire (de-laminating or something else...).

Since I see by your sig "junior stunter", more likely, it's the head bearings or bent wheel I'd bet.

Depending on what side of town you're on, I'd hit up Motorcycles Unlimited for an eval. I think Patrick and the boys do that service for free- just remember that you probably won't get a solid "this is what it is" answer from just looking at it. Likely, they'll need to do a good work-up on it to know for sure.
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Old 11-14-2007, 04:52 PM   #5
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steering dampers will only mask the problem. they aren't a solution.
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Old 11-14-2007, 05:57 PM   #6
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it does it most around 40 mph other then that i guess ill just save my self a headache and take her to a shop.
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Old 11-14-2007, 06:00 PM   #7
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Quote:
Originally Posted by mellow View Post
I need HELP i have an 04 cbr and just recently the front end started to shake like if it was a mini tank slap any one have any advice?? or know where i could get a quote to fix it?
Dude I already told your dumb go to the doctor thoese bumps on ur fone zone aint normal


well thats the only thing i can help you with... Bout the bike, Get A GSXR you wont have any problems
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Old 11-14-2007, 06:39 PM   #8
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^^^ toms right. If it just 'started happening' without any hard drops or situations, start w/ tire pressure, then wheel, bearings...
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Old 11-15-2007, 08:23 AM   #9
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Dude I already told your dumb go to the doctor thoese bumps on ur fone zone aint normal


well thats the only thing i can help you with... Bout the bike, Get A GSXR you wont have any problems
what the is fone zone???
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Old 11-15-2007, 08:39 AM   #10
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Tires first, then wheel bearings, then steering head.

My busa developed a wobble at about 50mph about 6-7 years ago, I went through EVERYTHING looking for it, 2 sets of tires, balanced both sets twice and adjusted steering head/checked chain adjustment/alignment etc.... Well after several months, I discovered a bad REAR wheel bearing that was almost locked up but would still turn very roughly. I put in fresh bearings and it fixed it....Strangely enough, the rear wheel was causing the front end to wobble but....it did. So look EVERYTHING over well....sometimes things are not always as they seem.

BTW I took it to Stubbs, the service mgr himself rode the bike(because he owned one) and said it was normal, they all have a little wobble and thats why they have steering dampeners.... TOTAL CROCK OF ..... thats when I decided it was time for me to start working on my own bikes.
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Old 11-15-2007, 09:13 AM   #11
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gravitational pull of the moon
or
global warming
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Old 11-15-2007, 09:20 AM   #12
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Quote:
Originally Posted by ScooterTrash View Post
gravitational pull of the moon
or
global warming
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Old 11-15-2007, 10:07 AM   #13
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Quote:
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gravitational pull of the moon
or
global warming

Somebody start a poll and we will sort this right now!
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Old 11-15-2007, 10:13 AM   #14
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Quote:
Originally Posted by ScooterTrash View Post
gravitational pull of the moon
i think by now we should all know the old racer's rhyme by heart, but just in case you dont...

first quarter to waning cresent, +3 PSI is pleasant.
waning cresent to waning gibbous, back to normal isnt hideous.
from waning gibbous to first quarter, better keep her 3 psi shorter.

Lunar Phase Diagram

it continues to amaze me how many people have never heard of this. you should see the looks i get!
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Old 11-15-2007, 11:27 AM   #15
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sounds like a tire issue.
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