F6B engine knocking noise when braking/pushing on suspension? - Page 2
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Thread: F6B engine knocking noise when braking/pushing on suspension?

  1. #11
    Senior Member F6Bster's Avatar
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    I was wondering about the fans also!

    Quote Originally Posted by rdbonds View Post
    Are the cooling fans on when this is happening?

    There are no exposed pulleys/belts, etc on our bikes. Even the alternator is gear drive.

  2. #12
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    Quote Originally Posted by rdbonds View Post
    Are the cooling fans on when this is happening?
    My fans came on for the first time (that I know of) this weekend in 100 degree stop and go traffic.
    2016 F6B Standard Matte Silver. Freedom Combat Slip-Ons, BaggerShield 11" - 19" Sport Shield, Kuryakyn Ergo II Highway Pegs, Ultimate King Seat w/Driver Backrest, Pathfinder Running/Turnsignal/Driving Lights, Beeline Moto Navigation, INNOVV K2 Camera, DHS Racing Shifter Linkage Upgrade, Show Chrome Handlebar Risers and Luggage Rack.

  3. #13
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    Quote Originally Posted by rdbonds View Post
    Are the cooling fans on when this is happening?

    There are no exposed pulleys/belts, etc on our bikes. Even the alternator is gear drive.
    No it does it when it's cold too.

  4. #14
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    This has to be the strangest thing I’ve seen yet concerning the F6B.
    “Gibraltar” 2016 white deluxe has been sold.

  5. #15
    Senior Member rdbonds's Avatar
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    Very interesting. As I recall, there are no points on the engine where any rotating assembly extends outside the engine (i.e. no pulleys, harmonic balancers, etc). Just to be sure, I found this ebay listing that has nice photos of a GL1800 engine (which also happens to be from an F6b).

    https://www.ebay.com/i/254364995116?...saAvNyEALw_wcB

    The engine in these bikes is a stressed member (i.e. the frame bolts to it...it's structural). Has the bike has suffered an impact or wreck?

  6. #16
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    Quote Originally Posted by rdbonds View Post
    Very interesting. As I recall, there are no points on the engine where any rotating assembly extends outside the engine (i.e. no pulleys, harmonic balancers, etc). Just to be sure, I found this ebay listing that has nice photos of a GL1800 engine (which also happens to be from an F6b).

    https://www.ebay.com/i/254364995116?...saAvNyEALw_wcB

    The engine in these bikes is a stressed member (i.e. the frame bolts to it...it's structural). Has the bike has suffered an impact or wreck?
    As far as I know and can tell it's never been wrecked. I'm completely stumped.

  7. #17
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    Just a crazy idea: put the front tire up against a curb or something that won't move and bounce it without touching the brakes.

  8. #18
    Senior Member rdbonds's Avatar
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    The reason I was asking about wrecks is that with an engine that's a stressed member, it's possible for a wreck to damage an engine mount and chattering noise when the frame/mount flex as you apply force by bouncing it. To be fair, I'm grasping at straws. Based on the video, though, it doesn't SOUND metallic.

    I agree with SeaSteve and billsim...probably time to start removing tupperware to see if it goes away or at least to get a better look/listen at it.

  9. #19
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    Quote Originally Posted by 3wings View Post
    Just a crazy idea: put the front tire up against a curb or something that won't move and bounce it without touching the brakes.
    Good idea I'll try that

  10. #20
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    Quote Originally Posted by rdbonds View Post
    The reason I was asking about wrecks is that with an engine that's a stressed member, it's possible for a wreck to damage an engine mount and chattering noise when the frame/mount flex as you apply force by bouncing it. To be fair, I'm grasping at straws. Based on the video, though, it doesn't SOUND metallic.

    I agree with SeaSteve and billsim...probably time to start removing tupperware to see if it goes away or at least to get a better look/listen at it.
    Yeah it's definitely strange. I'll see what I can do but I don't really have space to take it apart.

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