Bent wheel
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Thread: Bent wheel

  1. #1

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    Bent wheel

    Found this the other day...could this be the source of my wobble around 42-48mph? Rather than wheel bearings, which I would hope wouldn't need to be replaced at only 20k miles? I had no "wobble" issues all the way up to 130mph (gps) while drag racing; it only wobbles when I let go of the bars around 42-48mph, and no other times (I've tested at 75 and 35):

    20160423_172056.jpg

    20160423_172058.jpg

    20160423_172104.jpg
    Just call me "Dok"...as in Dr Pepper, which I used to be addicted to!
    My Mildly Farkled '01 XX!

    "I want to die quietly in my sleep like my grandfather did...not screaming in terror like his passengers." - Bob Denver (Gilligan)

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  3. #2

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    Re: Bent wheel

    How did you do that? Would put money on that being the cause. Surprised it isn't losing air.

  4. #3

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    Re: Bent wheel

    Well, regardless of any riding symptoms that is a very sick wheel in dangerous condition. It needs to be repaired if it can be done safely or replaced if not.

    Also that was likely caused by a hell of a whack. I'd be checking the wheel bearings and steering head bearings, they don't like severe impacts.
    F#$% me, what just happened?

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  6. #4

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    Re: Bent wheel

    I must have bought it this way; I would *certainly* know if I had run over/into anything significant enough to do this kind of damage. Bummer.

    Teef, I bet you're right that I'm gonna end up replacing not only the wheel, but the wheel bearings and steering head bearings as well.
    Just call me "Dok"...as in Dr Pepper, which I used to be addicted to!
    My Mildly Farkled '01 XX!

    "I want to die quietly in my sleep like my grandfather did...not screaming in terror like his passengers." - Bob Denver (Gilligan)

  7. #5

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    Re: Bent wheel

    Just remember, what ever you do to insure shes ready to rock, its worth it! Last couple seasons had some ailment like a back issue or last year a couple sore elbows but still had an awesome time. Just back from the best ride ever and looking at what I can improve!
    WildDoktor likes this.

  8. #6

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    Re: Bent wheel

    MC Wheel can fix that rim no problemo!

    mcwheel main page

    T.
    WildDoktor likes this.
    "Stemmata quid faciunt."

  9. #7
    just do it
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    Re: Bent wheel

    Although the damage on the wheel does look repairable, I'd have a pro's opinion on it
    But I'd either buy a new front wheel or a good second hand one.
    Just dont stand there,do something, rruff rrruff
    Wot u looken at. have a go ya mug. THE BLUE 1
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  10. #8

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    Re: Bent wheel

    WildDoktor, I looked for a picture of your bike but gave up after about 10 minutes.

    To answer your question..........no, the bent rim is probably not the source of your mid-40's wobble.

    A search of the forums will probably reveal to you that many folks have experienced a persistent wobble in the bars somewhere between 40 and 65 mph. Although there are many variations, the most usual conditions seem to be decelerating, hands off the bars, and the bike has a top box rack. The wobble is slight, but increases in magnitude steadily, and stops immediately once a hand is replaced on the bar.

    Often the wobble is no longer present once a new front tire is fitted, but returns after 500 to 1000 miles.

    I've studied this on every XX I've owned. Raising the rear seems to make it a bit worse, and lowering the front makes it even greater. Its disconcerting but of minimal concern....a single finger on the bars will usually alleviate the wobble. I use a steering damper because there are times that I want both hands free to make a clothing or gear adjustment without having to pull over.

    If this matches your situation, then your bike is pretty normal. I would still recommend you check the steering head bearings and wheel bearing simply on principle. The damage to your rim is relatively slight...I've seen much worse, and ridden much worse myself. If that were the cause of your wobble, then the wobble should become steadily more pronounced with greater speed, not drop off and go away. I believe the "usual" Blackbird wobble is the product of frame geometry and aerodynamics, but I'm certainly not smart enough to theorize on the cause...its all I can do to simply observe the effects.

    If your bike has this wobble even with your hands on the bars, I'd park it and start doing some serious diagnostics.

    And a good diagnostic would be to find a local to swap wheels for 20 miles or so for a quick and easy comparison.
    SRAD97750, WildDoktor and MDRSK like this.

  11. #9

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    Re: Bent wheel

    I bent both my rims after hitting a pothole at high speed, A lot worse buckle than yours, I got them both rerolled and they have been perfect since,
    WildDoktor likes this.
    If ya not Boppin, Ya in ya coffin. Rock and Roll will soothe your soul.
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  12. #10

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    Re: Bent wheel

    Thanks everybody; as usual this is the place for great info!

    I think I'll look around locally for a shop who can repair the rim, but after looking around it does, indeed, seem like a fairly small amount of damage, and there are no symptoms at all except for the wobble that iXXion mentions / explains.

    iXXion, thanks for the info; my bike does exactly as you describe...wobbles a bit at those speeds while decelerating, hands off the bars, then stops with one finger on the bars. Literally no wobble at 80mph in the same situation. BTW, I've got a couple albums on this site with pic's of my bike; check my profile.
    Just call me "Dok"...as in Dr Pepper, which I used to be addicted to!
    My Mildly Farkled '01 XX!

    "I want to die quietly in my sleep like my grandfather did...not screaming in terror like his passengers." - Bob Denver (Gilligan)

  13. #11

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    Re: Bent wheel

    i suspect the uneven wear (cupping) on your tire is part of the cause.

    i too have experienced this wobble, in my case under deceleration around 20-25 mph with no brake application, hands off the bars. can't recall the tire brand but, my current pirelli angel gt's don't exhibit this even though the front's starting to show some cupping.

  14. #12

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    Re: Bent wheel

    Quote Originally Posted by ptxyz View Post
    i suspect the uneven wear (cupping) on your tire is part of the cause.
    My tire looks like it's cupping?
    Just call me "Dok"...as in Dr Pepper, which I used to be addicted to!
    My Mildly Farkled '01 XX!

    "I want to die quietly in my sleep like my grandfather did...not screaming in terror like his passengers." - Bob Denver (Gilligan)

  15. #13

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    Re: Bent wheel

    I did check your albums...one is a generic picture of accessories and the other is not much more than your underseat.

  16. #14

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    Re: Bent wheel

    in the 3rd pic in your original post, it appears that the tread is slightly higher one one side of a groove than it's neighbor. said another way, if you run your hand around the tire does it feel relatively smooth?

    pretty common in my experience. in my case, i feel a very slight wobble through the bars when the bike's leaned over. not enough to upset chassis or rider, just enough to know it's there.

  17. #15

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    Re: Bent wheel

    Quote Originally Posted by iXXion View Post
    I did check your albums...one is a generic picture of accessories and the other is not much more than your underseat.
    My apologies! Thought I'd added more pics than that. :-) Here ya go! http://www.cbrxx.com/members/20287-albums11844.html
    Just call me "Dok"...as in Dr Pepper, which I used to be addicted to!
    My Mildly Farkled '01 XX!

    "I want to die quietly in my sleep like my grandfather did...not screaming in terror like his passengers." - Bob Denver (Gilligan)


 
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