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Offline Bulld01

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Vibration and worse when on brakes
« on: 02 April, 2018, 10:35:28 AM »
Hi all, need some advice, have mk 1   2006 cbf1000 abs just over 47k miles, have noticed a vibration through the bars for a little while which meant no hand riding was out of question, this has now worsened and increased to a weave when braking , front only but as a linked system may be rear end as well, I cleaned out the front floating rivets.  Have released binding front discs and still have the same issue.  Thinking it maybe a warped disc. 

How do I check for a warped disc and could this be something else, all input is appreciated

Offline alan sh

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Re: Vibration and worse when on brakes
« Reply #1 on: 02 April, 2018, 10:49:20 AM »
If you only apply the front brake that does NOT apply the rear brake. It's only rear -> front that is linked.

It could be a warped disk but have you checked the wheel bearings?

Alan
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Offline hondacbf

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Re: Vibration and worse when on brakes
« Reply #2 on: 02 April, 2018, 02:16:31 PM »
Plenty on u/tube on how to check for warped discs.
Also check the steering head bearings and swinging arm for wear, this will show up as 'knocking' and notchy movement from worn bearings, same for wheel bearings.
Their should be no free play in any bearing.
Some have complained about weaving when having a top box fitted, this is more down to aerodynamics, however: if their is wear in any of the above bearings the weaving and vibration could be amplified.

Offline hondacbf

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Re: Vibration and worse when on brakes
« Reply #3 on: 02 April, 2018, 03:25:50 PM »
Check your tyre pressure's, and also for any irregularities in the tyre itself...easily overlooked!

Offline Rev Ken

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Re: Vibration and worse when on brakes
« Reply #4 on: 04 April, 2018, 09:46:15 AM »
*Originally Posted by hondacbf [+]
Check your tyre pressure's, and also for any irregularities in the tyre itself...easily overlooked!
As well as the tyre seating is uniform around the wheel rim.
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Offline Scott_rider

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Re: Vibration and worse when on brakes
« Reply #5 on: 04 April, 2018, 05:46:21 PM »
Could be something as simple as an unbalanced wheel...or a fubared wheel rim if you've been down a pot hole? Might be worth checking both of those first.

Offline Jex

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Re: Vibration and worse when on brakes
« Reply #6 on: 06 April, 2018, 08:26:46 AM »
Just to add that I also got some of these symptoms (lots of vibration and hands off wobble) as my front tyre was getting towards the end of its life and was showing lots of scalloping (a normal wear effect showing as uneven front-back wear of the tread blocks caused by braking).

So would definitely suggest close inspection of the tyre for balance, tread wear, etc. You can feel and see scalloping as one end of the tread blocks being more worn down that the other in the forward-backwards direction.

Offline Bulld01

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Re: Vibration and worse when on brakes
« Reply #7 on: 06 April, 2018, 09:29:21 AM »
Thank you for all of the replies, can confirm tyres are in good condition. Pressures checked religiously, no cuts etc. Wobble is worse when on brakes so leaning toward either bearings or discs. Gonna look at cleaning floating rivets over weekend and having a better look at the problem

Offline jm2

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Re: Vibration and worse when on brakes
« Reply #8 on: 07 April, 2018, 10:38:05 PM »
But you implied you'd cleaned the bobbins in the first post.
If you are inducing a weave under braking that is worrying.

I'd be checking steering bearings (Honda's don't last forever) - support the front and check in place first.
And, I'd be removing that front wheels and seeing if there was anything that felt worn/uneven/less than perfect in the front wheel bearings.
Check the wheel looks true by spinning it.

Then report back with 3x findings ...
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Offline Bulld01

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Re: Vibration and worse when on brakes
« Reply #9 on: 14 April, 2018, 08:11:36 AM »
 Well unfortunately it's the more expensive option, warped disk in right hand side, checked fully last night, bearings are good, no play at all, so now need to source 2 disks, studs and pads.


 


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