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Rotary On-board & Shock Towers

Discussion in 'General Classic Motorcycle Discussion' started by Tornado, Mar 21, 2020.

  1. Tornado

    Tornado VIP MEMBER

    Joined:
    Dec 5, 2017
    While relaxing to the wonderful sounds of this video of on-board footage of a rotary Norton at Spa, I noticed the right side shock tower cap oscillating up and down (the torquise section against the outer casing) while the right never seemed to move:



    What explains this? Poorly dialed in preloading? Intentially different tuning btwn right/left? Different internals left to right so one does the compression, the other the rebound?
     
  2. alan hodge

    alan hodge

    Joined:
    Oct 10, 2017
    I think that's the camera
     
  3. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Me too.
     
  4. Tornado

    Tornado VIP MEMBER

    Joined:
    Dec 5, 2017
    I can see the edge of the turquoise cap moving next to the surrounding tube end. Even a slight shadow appears as it dips below the edge. Not seeing that on the left. Quite pronounced at times.
     
  5. kommando

    kommando

    Joined:
    May 7, 2005
    Looks to me like its moving but not with the suspension but the throttle opening, so likely something loose and vibrating.
     
  6. Tornado

    Tornado VIP MEMBER

    Joined:
    Dec 5, 2017
    Just looking closely again....can even see a difference in amount of threaded section sticking out of top nut (more) on left side than on right. So might be a loose fork nut.
     

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