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How to tell which wheel bearing?

Discussion in 'Generation 1 Prius Discussion' started by ChapmanF, Aug 31, 2013.

?

Which bearing do these clues point to?

Poll closed Sep 7, 2013.

  1. Left front

    0 vote(s)
    0.0%

  2. Right front

    1 vote(s)
    33.3%

  3. Left rear

    2 vote(s)
    66.7%

  4. Right rear again (just don't make 'em like they used to)

    0 vote(s)
    0.0%

  5. Need more clues

    0 vote(s)
    0.0%
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  1. royfrontenac

    royfrontenac Member

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    You are right on chap, I will refer to your post when I do a front wheel bearing. I have my own 10 ten ton press in the garage and will refer to your post when I do a front wheel bearing. You are very detailed with your instructions that will help a lot when doing one for the first time.

    Very good post

    Roy from Canada
     
    #41 royfrontenac, Jan 3, 2015
    Last edited: Jan 3, 2015
  2. royfrontenac

    royfrontenac Member

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    Yes that is true, sometimes I try to help but forget the environment that you require to safely do the work - hot oil is a safety problem and should not be used without extreme caution.
    Thanks for bringing this to my attention.
     
    #42 royfrontenac, Jan 3, 2015
  3. ChapmanF

    ChapmanF Senior Member

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    I'm not the only weirdo who likes to think this way! Check out this nifty app from the same guy who does the Weber Auto teardown videos:



    $400, but cool. Brought to you by Vibrate Software, which is his spinoff outfit.

    -Chap
     
    #43 ChapmanF, Jun 4, 2018
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  4. Mendel Leisk

    Mendel Leisk Senior Member

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    No extra sensors involved; just the iPhone itself is able to detect/isolate vibrations?
     
    #44 Mendel Leisk, Jun 23, 2018
  5. ChapmanF

    ChapmanF Senior Member

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    Pretty much all smartphones include microphones (for rather obvious reasons) and accelerometers and gyroscopes (for some applications you would think of, and various other uses that you might not).

    -Chap
     
    #45 ChapmanF, Jun 23, 2018
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  6. Mendel Leisk

    Mendel Leisk Senior Member

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    I find it astounding though, that the phone can pinpoint an issue, just hand-held, just positioned "somewhere" in the car's cabin. That's it, no additional mikes or whatever?

    I know (with the app "cardio) it can turn on the camera's light, and when you cover it with a finger, determine your pulse rate. I'm mildly amazed by that, lol.
     
    #46 Mendel Leisk, Jun 23, 2018
  7. ChapmanF

    ChapmanF Senior Member

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    Did you watch the video? The whole idea is that the things that need to be distinguished from each other have characteristic frequencies based on known gear ratios and related to the speed of the car. So the thing needs to know how fast you're going (GPS on board phone) and your tire revs per mile, and do a Fourier transform of the all the vibrations it's picking up, and tell you which of the strong components match which known frequencies for the car at that speed.

    ... as was pretty much the approach going on earlier in this thread in post 25, and in my thread that preceded it where I was hoping to decide whether a noise was a bearing or MG2. (Only instead of a phone app doing a Fourier transform, I just had me going "ehh, sounds mostly somewhere between d and d flat".)

    -Chap
     
    #47 ChapmanF, Jun 23, 2018
  8. Mendel Leisk

    Mendel Leisk Senior Member

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    I had sound problems, halfway through the video. Thanks for the overview. That's impressive.

    Another problem: I always nod off, watching that guy's videos.
     
    #48 Mendel Leisk, Jun 24, 2018
  9. ChapmanF

    ChapmanF Senior Member

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    I use the speed setting a lot on youtube vids. It does pitch-correction on the audio, so it doesn't turn people into chipmunks, you just get through the video faster.

    -Chap

    ytv.jpg
     
    #49 ChapmanF, Jun 24, 2018
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