Tire Scrub on Muffler
  • Hscumbie
    Posts: 8
    Joined: Wed Mar 02, 2016 6:18 am

    Tire Scrub on Muffler

    by Hscumbie » Wed Jan 04, 2017 11:59 am

    Hey guys, i have been joyriding my bike around since i finished rebuilding it when i happened to notice that my rear tire has been scrubbing the muffler? It doesn't scrub when im just riding down the field and whatnot. It tends to happen when i jump some hills (they aren't big at all. it only scrubs the right muffler.) Could it be that my rear shock is too loose? Is there any kind of side to side adjustment that i can do to the swingarm? thanks.

    Photos: https://drive.google.com/open?id=0B9My1 ... Hk3b1M0MHc

    https://drive.google.com/open?id=0B9My1 ... ndVLUJiRm8

    https://drive.google.com/open?id=0B9My1 ... URXN0ZKZkk
  • Aussiecrf230
    Posts: 1281
    Joined: Fri Jan 06, 2006 11:11 pm

    by Aussiecrf230 » Wed Jan 04, 2017 4:11 pm

    The mufflers look even side to side but photos can be deceptive.
    You could check if there is any play in the swingarm bearings but I think you would have more problems then just a rubbed muffler.

    Is there any adjustment (or damage)to muffler brackets. Maybe slight bend could be fixed by spacing out muffler a bit.

    Measure the gap between the mufflers where it rubs and compare that to the tyre width. Is it a wider tyre than standard?

    Is the rear wheel aligned straight ahead? Check adjusters. Hope swingarm not bent.

    Just some ideas - hope it helps.
    Last edited by Aussiecrf230 on Thu Jan 05, 2017 2:33 pm, edited 1 time in total.
    Ray
    Australia

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  • Hscumbie
    Posts: 8
    Joined: Wed Mar 02, 2016 6:18 am

    by Hscumbie » Thu Jan 05, 2017 7:56 am

    Aussiecrf230 wrote:The mufflers look even side to side but photos can be deceptive.
    You could check if there is any play in the swingarm bearings but I think you would have more problems then just a rubbed muffler.

    Is there any adjustment (or damage)to muffler brackets. Maybe slight bend could be fixed by spacing out muffler a bit.

    Measure the gap between the mufflers where it rubs and compare that to the tyre width. Is it a wider tyre than standard?

    Just some ideas - hope it helps.

    The tire is stock 100/90-19. I just put some washers on the right side of the subframe where it mounts to the mainframe and put a spacer between the muffler mount and the subframe where the muffler bolts to. Maybe that'll shift the muffler to the right enough. Also, the swingarm bearings are good. They were fine when I rebuilt the engine. Any other suggestions?
  • Hscumbie
    Posts: 8
    Joined: Wed Mar 02, 2016 6:18 am

    by Hscumbie » Thu Jan 05, 2017 8:45 am

    Guys, im an idiot..... what I realized is the hangers are off center... all i did was simply swap the right muffler with the left and voala! It clears now. Thanks for your help!!

    Before: https://drive.google.com/open?id=0B9My1 ... URXN0ZKZkk

    After: https://drive.google.com/open?id=0B9My1 ... Wg4S3NxR1k

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