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Thread: Vibration at 55 (or other high gear load) SOLVED!

  1. #31
    Senior Member rmezei's Avatar
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    I would be very interested in the results myself - I can tell you my 2017 NC750X up here in Canada is doing the same thing, as soon as I pass over 60KM per hour and switched to 6th gear, she's laboured as hell until some more RPM pick up - especailly seen with the wife on (2up), i.e. more to pull. It's not something you can miss, it's pretty obvious. I always thought it was normal and the engine design - lumping.

  2. #32
    Senior Member HarveyM's Avatar
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    Interested in the results. (Will you tell/show the previous owner if it works out?) I can't believe this is a common QC failure on Honda's part (or at least hope it's not).

  3. #33
    Super Moderator Vibration at 55 (or other high gear load) SOLVED! 670cc's Avatar
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    Quote Originally Posted by rmezei View Post
    I would be very interested in the results myself - I can tell you my 2017 NC750X up here in Canada is doing the same thing, as soon as I pass over 60KM per hour and switched to 6th gear, she's laboured as hell until some more RPM pick up - especailly seen with the wife on (2up), i.e. more to pull. It's not something you can miss, it's pretty obvious. I always thought it was normal and the engine design - lumping.
    That symptom you describe is normal behavior for a 700 (but I couldn’t say if it is on a 750). It is not the same symptom and it is not the problem I’m trying to address.
    Last edited by 670cc; 1st November 2017 at 08:59.
    Greg
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  4. #34
    Senior Member rmezei's Avatar
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    Got ya ! I did read the whole thread here so I see what you mean ... good luck

  5. #35
    Junior Member
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    I think I have this problem.

    Which youtube videos did you watch that you mention

  6. #36
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    Any resolution to said issue (s) 670cc.

  7. #37
    Senior Member Vibration at 55 (or other high gear load) SOLVED! MalcolmReynolds's Avatar
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    Quote Originally Posted by 670cc View Post
    That symptom you describe is normal behavior for a 700 (but I couldn’t say if it is on a 750). It is not the same symptom and it is not the problem I’m trying to address.
    Might I also add that 60km is 37 mph. 6th gear at 37 mph the bike is LUGGING. So what 670cc said is true, this is normal behavior.

    670cc did your replacement injectors do the trick for you?
    Last edited by MalcolmReynolds; 9th June 2018 at 16:16.

  8. #38
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    Undoubtedly agree with MR above. 6th gear at 37 mph is ridiculous, who would operate there......mpg mean something, but ......c'mon.

  9. #39
    Senior Member Vibration at 55 (or other high gear load) SOLVED! dduelin's Avatar
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    Ridiculous for sure but Honda says it is OK. Page 41 - 42 in my owner's manual. I have owned Honda motorcycles for 48 years and the owner's manuals always have crazy low minimum shift points. Don't worry about it.
    Dave

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  10. #40
    Super Moderator Vibration at 55 (or other high gear load) SOLVED! 670cc's Avatar
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    Quote Originally Posted by MalcolmReynolds View Post
    Might I also add that 60km is 37 mph. 6th gear at 37 mph the bike is LUGGING. So what 670cc said is true, this is normal behavior.

    670cc did your replacement injectors do the trick for you?
    Fuel injectors were changed and made absolutely no difference to the engine behavior. So I guess they were good before and they’re good now. I’m beginning to think that the aftermarket handlebars installed by the previous owner are largely responsible for the “feel” of the bike. The internal and external handlebar weights are gone.

    In response to the other comment, I even run my NC at 1500-2000 rpm on rare occasion. Depending on the situation (gear, load), it’s not lugging it.
    Last edited by 670cc; 9th June 2018 at 20:50.
    Greg
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