Chain Noise & Hop

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by hennessyktm, Feb 21, 2013.

  1. hennessyktm

    hennessyktm Been here awhile

    Joined:
    Apr 9, 2009
    Oddometer:
    126
    Location:
    Fort Leavenworth, Kansas
    All, I ride an 04 950 ADV, has 26,600 miles on it. I just did a 530 mile ride from Tennessee to Savannah, GA. When I pulled into town I noticed a rhythmic, whirring sound coming from the chain/front sprocket area. The sounds increases/decreases with speed/revolutions of the chain, it is not constant. I put the bike on the center stand, put it in gear to get the back wheel going, then placed it into neutral and watched the chain (see videos, you can really see it in the second video). As the chain passes over the chain guide/slide on top of the swingarm, I noticed it hop/bounce in short intervals and was the source of the sound (you can hear the sound in the videos). I have no idea what is causing this. I already adjusted the chain.

    Any thoughts/ideas on what this is from? Hopefully it is something simple I've overlooked.

    Also, while on the center stand, when I had the clutch pulled in and put it in gear, the back tire started to rotate. Clutch plates, slave?

    Thanks in advance.

    <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="437" height="288" id="viddler_hennessyktm_1"><param name="movie" value="//www.viddler.com/player/3a613e72/"/><param name="allowScriptAccess" value="always"/><param name="allowNetworking" value="all"/><param name="allowFullScreen"value="true"/><param name="flashVars" value="f=1&openURL=48048438&autoplay=f&loop=0&nologo=0&hd=0"/><embed src="//www.viddler.com/player/3a613e72/" width="437" height="288" type="application/x-shockwave-flash" allowScriptAccess="always" allowFullScreen="true" allowNetworking="all" name="viddler_hennessyktm_1" flashVars="f=1&openURL=48048438&autoplay=f&loop=0&nologo=0&hd=0"></embed></object>


    <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="437" height="288" id="viddler_hennessyktm_2"><param name="movie" value="//www.viddler.com/player/4a99f248/"/><param name="allowScriptAccess" value="always"/><param name="allowNetworking" value="all"/><param name="allowFullScreen"value="true"/><param name="flashVars" value="f=1&openURL=45656879&autoplay=f&loop=0&nologo=0&hd=0"/><embed src="//www.viddler.com/player/4a99f248/" width="437" height="288" type="application/x-shockwave-flash" allowScriptAccess="always" allowFullScreen="true" allowNetworking="all" name="viddler_hennessyktm_2" flashVars="f=1&openURL=45656879&autoplay=f&loop=0&nologo=0&hd=0"></embed></object>

    <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="437" height="288" id="viddler_hennessyktm_3"><param name="movie" value="//www.viddler.com/player/e0eb757f/"/><param name="allowScriptAccess" value="always"/><param name="allowNetworking" value="all"/><param name="allowFullScreen"value="true"/><param name="flashVars" value="f=1&openURL=58649123&autoplay=f&loop=0&nologo=0&hd=0"/><embed src="//www.viddler.com/player/e0eb757f/" width="437" height="288" type="application/x-shockwave-flash" allowScriptAccess="always" allowFullScreen="true" allowNetworking="all" name="viddler_hennessyktm_3" flashVars="f=1&openURL=58649123&autoplay=f&loop=0&nologo=0&hd=0"></embed></object>
    #1
  2. Johnf3

    Johnf3 Long timer

    Joined:
    Apr 10, 2007
    Oddometer:
    1,128
    Location:
    West Texas
    </P>
    The wheel rotating with the clutch in is normal. Every bike I own does this. Don't worry about what it does on the center stand. As long as it doesn't creep when you actually ride it you are good.
    #2
  3. KEELAYMONSTER

    KEELAYMONSTER BRRAAAAPPP!!!

    Joined:
    Feb 11, 2012
    Oddometer:
    229
    Location:
    Pleasanton, CA
    Sounds like some bad links in your chain :cry

    How old is your chain?
    #3
  4. srad600

    srad600 Been here awhile

    Joined:
    Sep 30, 2009
    Oddometer:
    703
    Location:
    Chino Hills, CA
    I've noticed that my chain (OEM) makes alot, and I mean alot, of noise when it's either dirty, loose or both. It was bad enough that the first time I thought I had a motor problem, until I narrowed the noise down to the chain.

    I'd clean and lube the chain, make sure it's adjusted correctly, then see if the noise is still there. Unless your chain needs replacement (bad links like someone suggested above), I'd bet the noise/jump goes away.
    #4
  5. Claytonroy

    Claytonroy Been here awhile

    Joined:
    Jan 25, 2006
    Oddometer:
    288
    Location:
    Oregon
    Is that 26K miles on the original chain and sprockets?
    #5
  6. el queso

    el queso toda su base

    Joined:
    Mar 3, 2009
    Oddometer:
    990
    Location:
    colinas del norte, california sur
    That second video sure look like a stuck link. Might be time to replace the chain and sprockets.
    #6
  7. rossguzzi

    rossguzzi 990 Adv.

    Joined:
    Oct 21, 2012
    Oddometer:
    1,564
    Location:
    Bottom left hand side of OZ
    Chains stretch unevenly. You could have a tight section.
    #7
  8. hennessyktm

    hennessyktm Been here awhile

    Joined:
    Apr 9, 2009
    Oddometer:
    126
    Location:
    Fort Leavenworth, Kansas
    Well, turns out you guys are smart, thanks for the replies. Upon further inspection of the chain, I found one of the rollers on one of the chain links broke. The rivet was there (obviously) but the roller was no longer. That was causing the chain to hop and make noise when passing around the sprockets. Thankfully it was something simple. In all my years of riding though, that was a first for me.

    James (mechanic) up at Honda and Yamaha of Savannah saw me working on the bike in their parking lot, let me push the bike into the shop, ground a rivet down for me so I could break the chain, and cut my new one to length. So, I had to give him and his shop some props on the site...plus bought him a case of beer for the help.
    #8