Re: R1100s front end "rattle" & rear wheel play

[John Van Deren <r11rider@xxxxxxxxxxx>]

From: "Kit Scally" <kitscally@xxxxxxxxxxxxxx>

> '98 R1100s - no smashes, fiberglass shrouds all fit well, regularly
> serviced, now with 105,000 genuine road kms. In the last 3-6 months (?),
> there's been an annoying rattle (like a loose metal mudguard) every 
> time the
> front wheel goes over a small road discontinuity ('cat's eye' for 
> example).
> Nothing really evident on normal road surfaces.
>
> No discernable side-side play in the front wheel or fork assy.  Could not
> figure out a home-check to determine if the front shock was "loose". Both
> calipers tight as are front guards.  Everything in the headlight shell
> department untouched since new and certainly appears tight.
>
> Any thoughts on (a) the cause - and (b) any practical test to 
> confirm/deny
> likely cause(s)?

[...]

Hi Kit,

Maybe the rattle is coming from the brake rotor bobbins (being worn).  
These bobbins are known to wear out allowing the rattle you may be 
hearing when you hit a bump.  This link is from the IBMWR tech article 
about changing the bobbins on a K bike.  The parts and procedure are the 
same for the R1100RS...check to see if the parts are the same for your 
S:  http://ibmwr.org/ktech/floating-disk-rollers.shtml

Hope this helps, 

John Van Deren
Montpelier, VT

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