K11 Owners Group

mnb · Posted: Tue Sep 02, 2008 12:17 am Post subject: Front wheel grinding

I just got back from a 900 mile weekend. I stopped at a nearby eatery for some food before heading home. When I rolled the bike backwards out of the parking spot, I could feel and occasional grinding (as well as hear it). It happens about once every 12 feet.

It was dark, so my brief inspection was visually limited, but I couldn't see anything unusual on the tire tread, sidewall, rotors or stuck under the fender. I did notice that one side of the new brake pads looks poorly bevelled and the other side looks square. SJBMW installed them a month or so ago. That's when I posted about brakes being rather touchy. But bevelling is a common trick to help prevent squealing, which these brakes, which haven't squealed in years if ever, are now doing a little.

Anyways, I was wondering if anyone had advice on what to look for. It only happens rolling backwards, so I really don't think it could be the wheel bearing, but I'm open to suggestions and explanations - an expert at mechanics I am not.
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1997 BMW K1100LT ABS Special Edition
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2007 Harley Davidson Road King
2009 BMW F800GS
2011 Husqvarna TE310
2014 Ducati Multistrada Pikes Peak MNB Edition

Mystic Red · Posted: Tue Sep 02, 2008 6:30 pm Post subject:

Check to see if a caliper is loose. Or maybe it's not releasing properly. Every 12 feet? That seems funny, how about the fender clearance?
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Scott Hespelt, '94 K11LT
K11 OG #466

dubu650 · Posted: Tue Sep 02, 2008 8:26 pm Post subject: front wheel grinding

Is it grinding or rattling? My bobbins have a bit of play in them and whenever I back my bike out of the garage, I get a rattling noise from the disks. Also, over road cracks through town I noticed a rattling from the front end that I couldn't identify for the longest time. It was driving me nuts. I recently discovered both noises could be eliminated entirely with a slight application of the front brakes. Try rolling backwards while applying slight pressure on the brake. I found that the rattle disappeared. I'll change the bobbins soon.

Steve
1994 K1100RS

mnb · Posted: Tue Sep 02, 2008 8:33 pm Post subject: Re: front wheel grinding

mike toon · Posted: Tue Sep 02, 2008 10:05 pm Post subject:

The pads have nothing to do with loose/worn bobbins. Two different things.
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1976 GL1000 Naked
1981 GL1100 Naked
2000 DR650 Dual Sport

K11Martin · Posted: Wed Sep 03, 2008 2:42 am Post subject:

Not had the swing arm off lately, have you?
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Flying Duck · Posted: Wed Sep 03, 2008 9:41 pm Post subject:

Replace the bobbins. Mine are getting old on the LT and it makes noise bacling out of the garage too.

How many miles on your current bobbins?
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93 LT (x2)
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Off the grid · Posted: Wed Sep 03, 2008 10:00 pm Post subject:

FYI mine made the same noise when the bobbins were worn.
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Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
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mnb · Posted: Wed Sep 03, 2008 11:02 pm Post subject: