Front end shaking when coming to a stop - Page 3 - BMW S1000RR Forums: BMW Sportbike Forum
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 29 (permalink) Old 11-17-2012, 04:55 PM
Senior Member
 
Join Date: Jun 2009
Location: Mesa, AZ
Posts: 1,251
Not sure about a "shake" but I know what the clicking is you are talking about.

The rotors are "floating" to compensate for slight imperfections in the disc and or rim in lateral runout. If you grab the rotor and twist it back and forth around the axle (wheel rotation and counter rotation) you will feel the little bit of give in the rotor. When braking the clicking is from the calipers pulling on the rotor around this "float". Imagine rolling the wheel off of the bike by the rotors and not by the wheel axis. Now put weight on the wheel through the axis or axle. It is going to start clunking (clicking) as the weight distributes to different points in the 5 point mounting of the discs. This is pretty much the same as the calipers pulling on the discs, while the axle is holding the wheel, causing the disc to click around the axis of the wheel. You can simulate it by grasping the disc at two ends and rolling it around the wheel axis. You should feel the "clicking".

Not sure if the "shake" you are speaking of is the related to this but possibly. Is it actually shaking the bars in your hands? or does it just seem like it is shaking because of the "clicking" noise?

Last edited by viperclaw; 11-17-2012 at 05:00 PM.
viperclaw is offline  
Sponsored Links
Advertisement
 
post #22 of 29 (permalink) Old 11-18-2012, 06:37 AM
Senior Member
 
Join Date: Nov 2011
Location: NW Louisiana
Posts: 347
All things considered, I believe ViperClaw is correct!

Curtis
cwcary is offline  
post #23 of 29 (permalink) Old 11-18-2012, 12:06 PM
Junior Member
 
Join Date: Oct 2012
Location: Glasgow, Kentucky
Posts: 26
IMHO it's the floating rotors. They make a ratcheting clicking sound sometimes at the end of a stop. Nothing to worry about.

-Eddie

2012 BMW S1000RR
2012 Ducati Streetfigher S 1098
2005 H-D Road King Custom FLHRS
2013 Mercedes-Benz G550
2011 Mercedes-Benz SL550
EBruner is offline  
post #24 of 29 (permalink) Old 11-18-2012, 01:47 PM
Senior Member
 
HULK's Avatar
 
Join Date: May 2012
Posts: 393
Sounds like the steering head bearing. Happens sometimes to me as well (2012 s1k). Also happened on my 2007 cbr1000rr. With both bikes the mechanics torqued everything to spec but it would still occasionally happen. Maybe torque it 1nm more and see if that helps? It seems to only happen with short stop hard breaking.
HULK is offline  
post #25 of 29 (permalink) Old 11-18-2012, 02:29 PM
Senior Member
 
Join Date: Feb 2010
Location: Edmonton, AB.
Posts: 595
Send a message via MSN to Slim
if it were the rotors wouldnt all bikes do it? haha. mine surely doesnt.
Slim is offline  
post #26 of 29 (permalink) Old 11-18-2012, 03:17 PM
sbs
Senior Member
 
sbs's Avatar
 
Join Date: Sep 2010
Posts: 1,128
I know some people have said its NOT the ABS, but I disagree. 43k miles into owning mine and I have noticed this exact same thing, only when at low speeds and only on occasion. Mostly it happens to me on my commute when either there are damp patches and I'm coming to a stop, OR I hit some painted areas, OR I hit some slight dirt/gravel, or metal, or oil, all of these scenarios while coming to a slow stop.

It's never consistent and it almost always happens with cold tyres and cold brakes in town, never at high speeds

Last edited by sbs; 11-18-2012 at 03:25 PM.
sbs is offline  
post #27 of 29 (permalink) Old 11-18-2012, 06:40 PM
Senior Member
 
AMPforE's Avatar
 
Join Date: Jan 2010
Location: New Jersey
Posts: 1,168
FWIW,

Check the pinch bolts at the bottom of the forks. Ask me why.

1991 Suzuki Bandit 400
1996 Kawasaki ZX6
2006 Triumph Speed Triple
2009 Honda CBR1000RR ABS

2010 BMW S1000RR
ABS-DTC-Shift Assist
Fastest Color Motorsport
AMPforE is online now  
post #28 of 29 (permalink) Old 11-18-2012, 09:43 PM
Senior Member
 
Join Date: Jun 2009
Location: Mesa, AZ
Posts: 1,251
I'll bite.

Why?
viperclaw is offline  
post #29 of 29 (permalink) Old 11-18-2012, 11:03 PM
Senior Member
 
AMPforE's Avatar
 
Join Date: Jan 2010
Location: New Jersey
Posts: 1,168
Had the wheel off and forgot to tighten the right side. When stopping I had a shake. Got home checked again and was happy the bolts didn't back all the way out. Tightened them up and the shake went away. It's a long shot but I would check them anyway for those with this problem.

1991 Suzuki Bandit 400
1996 Kawasaki ZX6
2006 Triumph Speed Triple
2009 Honda CBR1000RR ABS

2010 BMW S1000RR
ABS-DTC-Shift Assist
Fastest Color Motorsport
AMPforE is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW S1000RR Forums: BMW Sportbike Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome