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Thread: Pavement paranoia!

  1. #31
    Registered User 36654's Avatar
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    Quote Originally Posted by wildbears View Post
    Wind buffeting and the associated noise contributes to fatigue on long trips (or short ones if you find it annoying).

    And fatigue is an enemy of staying safe on the pavement.

    If your bike "torments" you this way, maybe a different wind screen and/or wind screen mounting system would help.

    The causes of buffeting include screen attitude and negative trailing pressure.
    Ear plugs with a high NRR is a direct approach to limiting noise fatigue.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  2. #32
    Quote Originally Posted by 36654 View Post
    Ear plugs with a high NRR is a direct approach to limiting noise fatigue.
    Quiet mufflers stop the noise at the source. I have had riders with loud exhaust join us while riding, or I have come up on such a rider. I simply will not follow or ride along with a loud bike and will either pass the bike or stop myself until the nuisance is gone. I wear ear plugs but certainly don't rely on them to suppress some rude jerk's bleating exhaust.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
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  3. #33
    Registered User 36654's Avatar
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    Quote Originally Posted by PGlaves View Post
    Quiet mufflers stop the noise at the source. I have had riders with loud exhaust join us while riding, or I have come up on such a rider. I simply will not follow or ride along with a loud bike and will either pass the bike or stop myself until the nuisance is gone. I wear ear plugs but certainly don't rely on them to suppress some rude jerk's bleating exhaust.
    Paul, there's no way I will disagree with you on the loud mufflers. Boorish behavior is just that.

    However, in this day of 80MPH highway speeds, it's critical we get all riders to wear hearing protection. At those speeds, the wind noise will exceed the worst straight pipe.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  4. #34
    Registered User WWeldin's Avatar
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    but, loud pipes.............


    2000 R1200C, 2019 R1250RT

  5. #35
    Quote Originally Posted by 36654 View Post
    Paul, there's no way I will disagree with you on the loud mufflers. Boorish behavior is just that.

    However, in this day of 80MPH highway speeds, it's critical we get all riders to wear hearing protection. At those speeds, the wind noise will exceed the worst straight pipe.
    I agree 100% and did not intend to imply folks should not wear ear plugs. They should now, or hearing aids later. But even though I do wear ear plugs all the time, I am still greatly annoyed by loud pipes and will not ride with or near anybody with a bike so equipped.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  6. #36
    Registered User Anyname's Avatar
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    I find that ear plugs make wind buffeting seem less obnoxious. For bikes that handlebar fairings will fit on, I like National Cycle Deflector fairings. The are fairly small but the seem to be mostly effective at stopping wind and vehicle turbulence without introducing any on their own. They are also very reasonably priced, something like $130.
    BMW R bike rider, horizontally opposed to everything...

  7. #37
    Registered User 36654's Avatar
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    Quote Originally Posted by Anyname View Post
    I find that ear plugs make wind buffeting seem less obnoxious. For bikes that handlebar fairings will fit on, I like National Cycle Deflector fairings. The are fairly small but the seem to be mostly effective at stopping wind and vehicle turbulence without introducing any on their own. They are also very reasonably priced, something like $130.
    If someone could quantify the difference between noise and buffeting that would be helpful. I fear we're talking around individual perceptions of high and low frequency noise.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  8. #38
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    Quote Originally Posted by wildbears View Post
    Good question!

    Noise is heard and buffeting is felt.

    It's possible that you're talking about two perceptions of the same phenomenon. Noise can be quantified by a sound level measurement and we have established exposure levels relative to hearing loss. I'm not aware of allowable exposure levels for buffeting or the standard measurement methods.

    In summary, it's best to target the environmental factors with established thresholds and prior research on measurement methods. Placing all issues on the plate of the riding public will soon lead to a myriad of subjective discussions that will detract from the critical message you want to relay.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  9. #39
    Quote Originally Posted by wildbears View Post
    Good question!

    Noise is heard and buffeting is felt.

    That is exactly what I was planning to say, but I got beat in the race to say it.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  10. #40
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    Quote Originally Posted by wildbears View Post
    Back in the early 2,000's, I test road a Honda Gold Wing.

    Then, and maybe still, the bikes were designed for the usual Gold Wing rider.

    The latter usually don't wear helmets and, if so, not full face.

    I have always worn full face and did so on the test ride.

    At speed, the aerodynamics of the bike were such that it seemed as though someone was slapping the back of the helmet (wind-slap is another term for buffeting) with a rapid and regular rhythm.

    While an unusual form of buffeting, it demonstrates the essence.

    And is essentially absent if not wearing a full face helmet.

    Another example...

    Last year we test rode the latest Gold Wind, two-up.

    With this iteration the "wind-slap" occurs along both the captain's and pillion's sides.

    Wind flow around the helmets is smooth and without buffeting (wind-slap).



    More to follow later on wind-noise, wind-buffeting, causes, and solutions.

    If you're going to discuss the topic of wind noise and motorcycle riders, I suggest you start your discussion with a review of the work by Dr. John Kennedy of Trinity College Dublin. His experiments on correlating sound pressure measurements around the helmet with at-ear measurements, provides a strong indication that exterior turbulence isn't a dominant factor in the at-ear noise levels. His measurements indicate the noise source is the flow passing underneath the chin of the helmet.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  11. #41
    Registered User 36654's Avatar
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    Quote Originally Posted by wildbears View Post
    Thanks for the comment.

    Perhaps you can provide us with a link.



    Footnote: To clear up any possible confusion about post #58, these are just two examples of wind-buffeting. Buffeting can occur just about anywhere on the rider and the rider's helmet depending on a large number of variables. Post #58 is not about wind-noise.
    List of References.pdf

    34 journal and magazine articles. Most will provide additional references.
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  12. #42
    Registered User Anyname's Avatar
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    Quote Originally Posted by 36654 View Post
    If someone could quantify the difference between noise and buffeting that would be helpful. I fear we're talking around individual perceptions of high and low frequency noise.
    I hope I made it clear that the wind noise makes the buffeting seem worse. Buffeting is when the wind slaps you around. Noise is noise.
    BMW R bike rider, horizontally opposed to everything...

  13. #43
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    Quote Originally Posted by Anyname View Post
    I hope I made it clear that the wind noise makes the buffeting seem worse. Buffeting is when the wind slaps you around. Noise is noise.
    When I say quantify, I mean what would you measure to determine the magnitude or impact of this phenomenon?
    Cave contents: 16 R12RS, 13 Toyota Tacoma, 03 Simplicity Legacy, 97 Stihl FS75, Dewalt DW625 & SawStop PCS175
    1) My expectations are never low enough & 2) Incompetence is infinite ........David Brooks

  14. #44

    Post How to avoid a deer strike.

    <iframe width="737" height="415" src="https://www.youtube.com/embed/joWPikOaoqs" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

    .....
    Last edited by wildbears; 04-20-2020 at 07:31 PM.

  15. #45
    Can you say "NOT PAYING ATTENTION"!!! Sometimes it just can't be avoided, but this guy was in la-la land concerning his riding. Did do pretty well with his profanity though .
    Gail Thorne
    2017 F700GS

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