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  1. #1
    Johnson (OP)
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    Weird siren/whining like noise after chain/sprocket replacement

    Replaced my chain and sprocket on a 05 FZ6 right before winterizing it, noticed a weird whining almost siren (originally that's what I thought it was) upon deacceleration at high speeds. Chain is tightend within range and noticed a bit of it the other day when riding although probably won't get another chance to ride for a week or so due to the weather. Any idea what it could be? Didn't notice this prior to the chain/sprocket replacement so I figure it has to do with that?

  2. #2
    Junior Member Gary in NJ's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Well my first thought is/was the chain slack. Recheck just to be sure. The other possibility is that either your chain or a sprocket(s) aren't the correct pitch. Double check to ensure that they are all the same. Another thought is the axle isn't at the proper torque and what you hear is one of the wheel bearings.
    Lifelong student of motorcycling. Current bikes: Naked '05 FZ6, LS650 Café Racer, DRZ400 Street Tracker

  3. #3
    2007 FZ6 TownsendsFJR1300's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Chain is too tight.

    How did you adjust it?

    And what measurements?

    What front sprocket did you install, OEM?
    Scott
    2007 Yamaha FZ6- BD43 headlight mod, PIAA bulbs, Stebal air horn, Scorpion SS pipes-(no DB killers), Speedohealer, HEL SS brake lines, Fenda Extenda, K&P SS re-usable oil filter, custom mounted BMW style electrical outlet(L.S.), Techmount GPS mount with handlebar bar risers/set backs, additional helmet lock, custom mod'ed seat(Spencers), Hyper light-rear running/brake light, custom radiator/fan protector, Techspec tank pads, Grip Puppies, Yamaha rear rack with custom aluminum flat rack.

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    Junior Member SandyN's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    I had the same problem when the chain (make - EK) was replaced but the front sprocket not. The moaning "siren" like noise was terrible at around 70km/h. I immediately changed the front sprocket (Ognibene) and the noise was no longer present. This chain sprocket combination has now done over 40,000 km without problem. (I have also turned the sprocket around once)

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    Vrrroooooom! Weird siren/whining like noise after chain/sprocket replacement Motogiro's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Did you switch from a 530 to a 520 chain?
    If you can't fix it by hitting it with a hammer, it's electrical!

    Clif
    SoCal Hoon

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    Junior Member Gary in NJ's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    I mentioned pitch above, but thinking further, did you mix put a 520 chain on 525 or 530 sprockets? A 520 chain will fit on a 530 sized sprocket, but it will be tight.

    500 series chain: 5/8" pitch (distance between pins)
    Roller diameter: .400" all 500 sizes
    Width between inner plates:
    520: 1/4"
    525: 5/16"
    530: 3/8"
    Lifelong student of motorcycling. Current bikes: Naked '05 FZ6, LS650 Café Racer, DRZ400 Street Tracker

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    Senior Member Weird siren/whining like noise after chain/sprocket replacement zixaq's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Most likely culprit is overtight chain. 2" (~5 cm) on center stand, looser than most bikes.

    If you changed to a front sprocket that doesn't have the rubber bumper on it you'll get slightly more chain noise than OEM, but it shouldn't be much.

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    2007 FZ6 TownsendsFJR1300's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    We (or at least I) assume a chain and sprocket change would ALL have the size components that match each other.

    If mixed up, + 100 on Gary's post...

    Op, can you chime in here??
    Scott
    2007 Yamaha FZ6- BD43 headlight mod, PIAA bulbs, Stebal air horn, Scorpion SS pipes-(no DB killers), Speedohealer, HEL SS brake lines, Fenda Extenda, K&P SS re-usable oil filter, custom mounted BMW style electrical outlet(L.S.), Techmount GPS mount with handlebar bar risers/set backs, additional helmet lock, custom mod'ed seat(Spencers), Hyper light-rear running/brake light, custom radiator/fan protector, Techspec tank pads, Grip Puppies, Yamaha rear rack with custom aluminum flat rack.

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    It's all good! Weird siren/whining like noise after chain/sprocket replacement trepetti's Avatar
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Quote Originally Posted by TownsendsFJR1300 View Post
    We (or at least I) assume a chain and sprocket change would ALL have the size components that match each other.

    If mixed up, + 100 on Gary's post...

    Op, can you chime in here??
    Maybe he can't hear us over the whine!
    2005 FZ6 - FZ1 bar, Killernoodle clutch lever, Puig windscreen, Woodcraft sliders, BD43 headlight mod, Watsen LED signals, 2-Wheels levers, Givi tank bag and topcase, Galfer SS brake lines, LED pod lights, Motodynamic tail light, Grip Puppies

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    Johnson (OP)
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    Re: Weird siren/whining like noise after chain/sprocket replacement

    Quote Originally Posted by trepetti View Post
    Maybe he can't hear us over the whine!
    ahahahah, touche.

    Anyways, I got this chain/sprocket set:
    https://www.amazon.com/gp/product/B00E0IKF2G/

    Had my mechanic install it, I did check the chain and it did seem a little tight initially but I did loosen it to spec but can double/triple check although won't get a chance to check or ride until a few days if not a week or so (weather hasn't been cooperating and I get home fairly late).

    Regarding the rear axle torque causing the sound, would it mean its too tight or too loose? Regardless when I recheck the chain slack I can check the axel torque as well.

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