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CrazyIvan
Brick Rider
Joined: 15 Jan 2009
Posts: 27
Location: Wiltshire, UK
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 Posted: Sat Jul 03, 2010 11:36 am Post subject: Floating discs? |
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Hi,
Just taken the front wheel from my K1100RS for a new tyre and the fitter suggested I might need new discs as they are 'loose'. Now, I assume they are meant to be, being floating discs, will someone please confirm or otherwise.
The inners are conected to the outers with circular things and clips to hold in place.
Thanks.
Ivan |
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rydor
Flying Brick Rider
Joined: 16 Nov 2006
Posts: 1304
Location: Southern Illinois, U.S.A.
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| Posted: Sat Jul 03, 2010 11:53 am Post subject: |
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| CrazyIvan wrote: | | The inners are conected to the outers with circular things and clips to hold in place. |
Those are referred to as bobbins, and are what you want to replace. I assume this wasn't a BMW tech telling you to start replacing the rotors?
| CrazyIvan wrote: | | Should there be any lateral movement? |
A little movement is normal. Do a forum search for "bobbins". |
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Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
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| Posted: Sat Jul 03, 2010 12:00 pm Post subject: |
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Side to side movement is O.K. Forward to back movement is the one to suggest replacement. A teeny bit is normal. Forgive the technical term. Can't remember the exact measurement. 
_________________
Scott Hespelt, '94 K11LT
K11 OG #466 |
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CrazyIvan
Brick Rider
Joined: 15 Jan 2009
Posts: 27
Location: Wiltshire, UK
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| Posted: Sat Jul 03, 2010 2:05 pm Post subject: |
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Thanks very much for advice, now know I haven't a problem.... and the correct name for the circular things!  |
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Neiljohn
Joined: 04 Oct 2009
Posts: 24
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| Posted: Sat Jul 03, 2010 2:09 pm Post subject: Re: Floating discs? |
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If it's got original blackened aluminium bobbins changing them for either of the aftermarket steel ones will probably bring them back to only just floating... Mine were rattling until I changed the bobbins.
_________________
Southern Hampshire, England.
'95 K1100LTIC (ex-police) my first road bike after 20 years without a road bike! Now backed up by an F650GS (800 twin) and a Deauville. The '52 G80C isn't a road bike so doesn't count... |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
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| Posted: Sat Jul 03, 2010 10:49 pm Post subject: |
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I never really realized how much float those rotors can have.
Just went for a ride today with no helmet  or earplugs, and it's amazing the new/different sounds of the bike that you can hear. Like the rotors, and other assorted sounds.
_________________
Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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