2012 Suzuki DL650 Adventure wierd vibration at 4700RPM in all gears.

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by Roy Phillips, Jun 12, 2013.

  1. PeterW

    PeterW Long timer

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    6. Buy a couple of bicycle triangle frame bags (ebay, roswheel) attach to vibrating crash bars and put your wet weather gear, puncture repair kit or first aid kit in them.

    Pete
    #21
  2. Roy Phillips

    Roy Phillips Adventurer

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    The 4700RPM vibration problem on my 2012+ Vstrom has been firmly isolated to the Suzuki OEM Accessory Engine guard!!

    The dealer and I tested two naked vstroms and got no 4700RPM resonance vibes at all. We followed up yesterday by removing the Adventure model OEM engine guards on my bike and lost the 4700RPM vibes there too.

    Next steps is escalating the problem back to Suzuki for a redesign or retrofit for the engine guards.

    This highlights a more serious problem, that the manufacturer of the accessory engine guards did not fully test the bars on a real bike, other than fit, before providing them to Suzuki. A simple comparison ride on both a naked Vstrom and the adventure model would have found this resonant vibe problem quickly. Furthermore, and worse, it seems that neither did Suzuki fully quality assure test them on a bike before putting them into production. Even when it was brought to their attention as a warranty claim they ignored it and tried to bury it.

    So now all us folks on 2012+ adventure models and those who added them afterwards are stuck with defective engine guards. Resonance is a common problem with all metal fabrication and engineers design around it to make sure it is not happening in the operating range. When metal resonates it causes metal fatigue, broken pipes and attachments, loose bolts all can occur. Here it resonates through the entire motorcycle and could shorten its life. It is not a "Normal Harmonic". It is, however, a "Common Harmonic" to all adventure models and in my opinion not acceptable.

    Just removing the guard is not the final solution as we all need the functional protection for our legs and bikes that a guard provides on a fallover or accidental slide. I recommend those of you with this problem and still under warranty, escalate it to Suzuki.

    Back to you Suzuki engineers for a better crash guard.
    #22
  3. GtiKyle

    GtiKyle Been here awhile

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    Thanks for sharing Roy.

    I've been battling the vibration problems on my bike too, with very disappointing results. Granted my crash bars are from SW Motech, but looking at the design, they're nearly identical to the factory provided bars on the Adventure model. I know i have little recourse with Suzuki, since this is not a factory part, and thus I'm sure the warranty will do nothing to resolve it.

    I've tried all combination of "fixes" that others have. Rubber, torques...etc etc. I'm coming to accept my options are:

    1. Live with it; be disappointed with a brand new bike.
    2. Remove crashbars and be unhappy at the protection i had to give up.
    3. Dump more money trying different crash bar combinations (I've heard Givi's can be dwelled, and my friends Altrider set doesn't vibrate like mine).
    4. Sell the bike and get something else.

    Not to be overly dramatic about it..but the vibration is VERY pronounced at 70mph (5100 RPM for me)...I can't live with it resonating at an RPM i have to be at for long periods of time.

    Please update us if you hear or learn anything more about this.
    #23
  4. NJ-Bill

    NJ-Bill Life is good

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    Others, including me, have noted having oem crash bars with no vibration issue. This tells me that those with vibrations need to re-torque their bars. This may not be a one-and-done process. You may need to take off on a ride with a wrench or two and be prepared to make minor adjustments on the fly until the vibrations are gone.
    #24
  5. GtiKyle

    GtiKyle Been here awhile

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    This is the confusing thing to me, because i've done that...several times. I've probably taken off and retorqued the bars about 15 times, including running the bike in neutral, dwelling at the vibration RPM, and tightening/loosening the bolts. I cannot find the right combination.
    #25
  6. Roy Phillips

    Roy Phillips Adventurer

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    Glad to hear some Gleestroms have no vibes. Based on feedback we get either 4700RPM or 5100/ 5200RPM vibe hits. Re-torguing did not do it for me either. If the mounts were loose you would get more than a vibe you would get a lot of noise. This resonant vibe is so large it shakes the entire engine and frame, that's a lot of weight being thrown around at each end of that crash bar. The Suzuki mecahic told me that Suzuki outsourced the adventure gear to SW Motech. Previous forum contributors have mentioned similar problems with 2012+ OEM, SW Motech and older model Vstroms using GIVI bars. I previously had a 2010 DL650SEA touring model with Givi bars and had no vibes like this. So far I have heard no one complain about Hepco Becker crash bars? Those with sump/ skid plates attached to the engine crash bars appear satisfied as well.
    #26
  7. Shadowist

    Shadowist FX Artist

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    I recently got a 2012 V-Strom 650 last week. So far put 350 miles on her. Prior to installing crash bars/skidplate/center stand (did all three at once), there weren't any vibes. Once installed, there was this loud vibration right around that RPM range. Wasn't shaking the bike and definitely wasn't making the engine run super rough, but there is a clear vibration running through the entire bike (like a previous poster said...akin to a resonant frequency).

    However, she's buttery smooth outside that range! Personal preference, but that's definitely not a deal breaker to me :p Just need to make sure the bolts are on pretty snug.
    #27
  8. RED CAT

    RED CAT Bumpy Backroader

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    Biggest concern for them is safety. The rest is a very low priority. Wish I had something constructive to offer other than I'd be pissed.
    #28
  9. NJ-Bill

    NJ-Bill Life is good

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    This sounds simple to me. If you have Suzuki bars, return them to the dealer and get a replacement set. If you have SW-Motech bars, return them for a refund and buy Suzuki bars. For someone to post that they are disappointed with a brand new bike because their aftermarket bars vibrate makes no sense to me. This was a couple posts above; not the guy quoted.
    #29
  10. ALinUTAH

    ALinUTAH Been here awhile

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    Just replace the OEM crash bars with something else. My Hepco Beckers look very similar to the OEMs and don't buzz. Easy. Al
    #30
  11. dbarale

    dbarale Squiddly slow

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    Is there an open end to one of the tubes? If so you could use it to fill up the bars with BB's (mix with fish tank gravel to cut down on weight). Same trick used to reduce vibrations in handlebars. Cheap and reversible, worth a try?
    #31
  12. ohiomatt

    ohiomatt Adventurer

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    I'm one of the lucky ones that have no vibes from crash bars like so many have. Did notice a little bit in the same RPM (4700-5000) range after adding a bash plate that does not attach to the crash bars. Feel it up through the bars and in the seat at times. Goes away with removal of bash plate.
    #32
  13. Roy Phillips

    Roy Phillips Adventurer

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    Here is Suzuki Canada's reply to my request to replace or repair their OEM engine guard.... I shouldn't be surprised anymore. Guess they just don't care about their customers.

    <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p>"</o:p>Thank you for taking the time to write to Suzuki Canada Inc.<o:p></o:p>
    <o:p> </o:p>With regards to your request to modify your bike from its existing design, we regret that we are unable to accommodate. Your feedback around your concern is appreciated and we’ll collect all relevant information which will be reported to the factory, after which we will consider the matter closed. "<o:p></o:p>
    <o:p> </o:p>
    #33
  14. Dolly Sod

    Dolly Sod Red Clay Halo

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    Sounds like it's time for you to sell the bike and move on to something else.
    #34
  15. Roy Phillips

    Roy Phillips Adventurer

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    Just bought the bike, it is under warranty. Selling an otherwise good bike, losing out big time on depreciation and taxes when a problem is solvable does not make economic sense. Unfortunately, Suzuki Canada Customer Service is operating their "warranty" program like a cheap insurance company... deny claims, deny there is a problem, say you are the only one complaining, refuse to escalate problems, blame it on the customer, say it is normal, say it is safe, just to save a few bucks. Makes the names "customer service" and "warranty" a joke and it is wrong. If it was just me, I would surely walk away from Suzuki. This Vibe problem, in my opinion, is systemic to many owners of the Adventure models and is a safety issue which could eventually hurt someone else. Perhaps I am just a stubborn irishman as well as a professional engineer who worked in quality control for years. I would never sell something I know to be unsafe to anyone, I would fix it first. This Vibe problem is not safe and it is fixable. Suzuki just does not want to spend the money to fix it.
    #35
  16. Dolly Sod

    Dolly Sod Red Clay Halo

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    That's the first time I've ever heard that a bike that vibrates is dangerous.

    Sounds like it's time to sell the bike.
    #36
  17. fragile_this_side_up

    fragile_this_side_up Long timer

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    how is it unsafe? my brothers' buell vibrated waaaay worse at idle than my Vstrom ever has at 4700..
    #37
  18. Pecha72

    Pecha72 Long timer

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    I'd like to know, how this thing is actually a safety issue?
    #38
  19. de Vaca

    de Vaca Been here awhile

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    This has been a remarkable thread. Imagine, a motorcycle vibrating. I have a 2012 650 adventure, and felt some vibration around 4700 rpm and put a small piece of inner tube material in the front crash bar joint, and vibration is gone. I did not do it to prevent the bike from disintegrating, but did it to see if this minor problem could be solved easily after reading this thread. Took 5 minutes. This is a true example of a first world problem. I sure enjoy this bike.
    #39
  20. Roy Phillips

    Roy Phillips Adventurer

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    All bikes vibrate, some more than others. The Vstrom is exceptionally smooth otherwise. "Resonant harmonic harmonic" vibration however if sustained long enough will break something. Kind of like bending a nail repetitively it will break. As it is occuring at cruise speed on the Vstrom over time It can cause metal fatigue, premature ageing, which usually shows up at some joint or attachment. It can also also loosen bolts, many of these threads talk about retorquing bolts or loctiting them. However when you stress the entire frame and engine who knows what it can do long term. You can avoid that RPM altogether. Me, I took my OEM crash bars off and am rapidly looking for a replacement. Smooth vstrom again.
    #40