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Rubber in the rim

Discussion in 'Technical' started by Kiwirider, Aug 12, 2018 at 8:19 PM.

  1. Kiwirider

    Kiwirider Active Member

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    Have been noticing over the past few rides that I’ve been getting rubber build up around the inside rim of the rear tire. It happened while it was just me on it, but more so with the gf on the back. Never had that problem before. I can’t see and didn’t feel and rubbing on the tire/fender while we were on it. Could it be just adjusting the shocks? Any other spots the rubber could be coming from?
    [​IMG][​IMG]


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  2. Hirter6Pack

    Hirter6Pack Not Quite A Guru
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    Mainly on the brake side.
    Could it be brake dust?
     
    #2 Hirter6Pack, Aug 12, 2018 at 8:27 PM
    Last edited: Aug 12, 2018 at 11:55 PM
  3. Kiwirider

    Kiwirider Active Member

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    That’s what I first thought. But it’s definitely rubber. I brushed the rim clean twice yesterday while riding (250 miles).


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  4. HMAN

    HMAN Well-Known Member

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    Tail light rubbing.....ck ur tire for a pattern.
     
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  5. Hirter6Pack

    Hirter6Pack Not Quite A Guru
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    Any unusual tire wear?
    Can you see anything rubbing up under the fender?
     
  6. Low rider

    Low rider Member

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    Possibly fender/ strut bolts loose ?

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  7. TapioK

    TapioK Well-Known Member
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    How is the belt?


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  8. Fat_Bastard

    Fat_Bastard Active Member

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    … like others said check belt alignment and tension;
    also do you ever roll the bike backwards? and with 2 up backwards, even 3 feet? this can cause the belt to rub against the side of the tire. (and belt could be going bad?)
     
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  9. bdm7250

    bdm7250 Guru
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    :agree:X2
     
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  10. Coolbreezin

    Coolbreezin Active Member

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    Tires are actually not the width that the manufacturer says it is (ex 300 is actually 310mm). Ck the very edges of yr rear tire. I have 70,500 miles on my bike and I get dust particles and I believe its from the brakes.
     
  11. Fat_Bastard

    Fat_Bastard Active Member

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    Although a bit remote, check for...
    any sideways movement or wiggle from worn or loose rear wheel bearings, swing arm pivot bushings...
    best if checked with bike on a lift, gently but very firmly wiggle/pry rear wheel side to side and up and down, spin the wheel forward and backward to notice if belt starts to rub on things...
     
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  12. SKOGDOG

    SKOGDOG One of the old ones.
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    First take compressed air and blow out your rear caliper and wipe off the rear wheel. Then go ride around for 15-20 minutes and only use your front brakes. Then inspect.
    With respect, I suggest the only stuff that would wind up on that side of the rim concentrating towards the middle would be brake dust.
    If this is wrong, at least you can rule out brake dust.
     
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  13. Sven

    Sven Well-Known Member

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    Look at every tooth on the belt. Look at the sides of the belt. Centrifugal force flings out so it couldn't be a tire rub under the fender say. But the belt being inside the rim... buaddaboom buddabing

    How close am I short of air turbulence from the fender rub sucking into the rim.
     
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  14. Hirter6Pack

    Hirter6Pack Not Quite A Guru
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    Agreed but the problem is, it mainly on the brake side.
    IMG_2282.PNG
     
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  15. Reddickracing

    Reddickracing Active Member

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    Blinker/strut bolt back out?
     
  16. Jersey Big Mike

    Jersey Big Mike Active Member

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    Wasn't there a recall back in the day on strut bolts -- a snapped strut bolt will chew the tire up in a hurry, especially riding 2 up -- trust me I learned that the hard way.
     
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