Gas tank moves a little

Discussion in 'Dyna Models' started by Spade5, Sep 10, 2010.

  1. Spade5

    Spade5 Active Member

    I have accepted the Dyna clunk as a given when riding across railroad tracks and such. I always thought the sound was coming from the front forks but now I am not so sure.

    I was doing a little cleaning and noticed that my gas tank will rock a little and it seems to be only in the front mount. I checked the front and rear mount bolts and they are good and tight. The front bolt goes through a horizontal tube that is welded to the frame and it looks to me like there is a little play that allows the tank to rock.

    I was just wondering if "they all do this" or if I am cursed with an anomaly like I usually am. I can't believe it took me three years to notice this.
  2. Dr. Dolittle

    Dr. Dolittle Experienced Member Contributor Retired Moderators

    Any way you could fashion some sort of soft, rubber like shim for the tube where the bolt goes through that would take up the play you've noticed?

    Worth a try anyway!
  3. Hoople

    Hoople Account Removed

    Sit on the bike and grab the tank from underneath with the palms of your hands. Pull up and down on the tank. If it moves and makes a noise, tighten the front mounting bolt more. Mine was also "tight" but not tight enough. I had a bad knock/clank going over RR-tracks. You have to really squeeze those mounting ears. It is Dead silent now.
  4. Spade5

    Spade5 Active Member

    Doc, I was thinking the same thing. I haven't quite figured out how to do it though.

    Maybe they all don't do it but I am going to give Hoople's suggestion a try and tighten it up some more.

    If you had asked me a week ago if my tank moves I would have said no but I would have been wrong.

    Thanks for the feedback.
  5. lowriderfrf

    lowriderfrf Member

    I had the same problem on my '06 Lowrider for about 6 months before I figured it out. Same solution as Hoople stated, tighten it up. I found this about 3 months ago and no more clunk.
  6. Jack Klarich

    Jack Klarich Guest

    Same here 07 Streetbob, new thing to check each time I change oil:s

    NEWHD74FAN Experienced Member Retired Moderators

    Just for curiosity, can you change that bolt to one slightly larger in diameter? I changed mine out to stainless, with matching stainless washers because the existing hardware was cadmium plated and! And it was a little too long anyway (they use that silly plastic cap to "cover" up that fact). Found I did not have to "snug" it down too tightly to steady that tank.
  8. Jack Klarich

    Jack Klarich Guest

    HMM, now that makes a lot of sense, good tip NEWHD:s