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Keihin FCR 35mm flatslides rubbing on tank

Discussion in 'Norton Commando Motorcycles (Classic)' started by johnny Lagdon, Sep 10, 2019.

  1. johnny Lagdon

    johnny Lagdon

    Joined:
    Nov 18, 2016
    I have noticed the throttle cable mechanism bracket at the right hand side of the carbs is rubbing away at the petrol tap spigot on my roadster tank. Anyone had same problem and come up with clever fix?
     
  2. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    Could you post a photo on here?
     
  3. MexicoMike

    MexicoMike

    Joined:
    Jan 31, 2010
    A pair of Amal Concentrics!:rolleyes:

    Sorry, couldn't resist...:oops:
     
    Matchless likes this.
  4. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    Or a single mikuni!!!
    I'm going to hell for that one
     
    Craig and Matchless like this.
  5. Guido

    Guido

    Joined:
    May 23, 2011
    You may need to check the padding under the tank. New padding may lift the tank enough to lear the petcocks.
    Without a picture I am just guessing.
     
    concours likes this.
  6. maylar

    maylar VIP MEMBER

    Joined:
    May 13, 2007
    The CnW web site mentions that some tanks might do that. I think either raising the tank up a bit or perhaps a different style fuel tap might work.
     
  7. johnny Lagdon

    johnny Lagdon

    Joined:
    Nov 18, 2016
    I would post a picture if I could work out how to...
     
    Last edited: Sep 11, 2019
    baz and Craig like this.
  8. freefly103

    freefly103 VIP MEMBER

    Joined:
    Apr 17, 2013
    Yep, it's a bit tight in there. The standard rubber boots between the manifold and carb are quite flexible. This and the tight clearance, over a rough road at slow speed, resulted in a crack in the carb top of my FCRs (hitting on the frame of my centrally mounted oil tank 750).

    I replaced the rubber boots between the manifold and carb with slightly shorter high temp hose. Gave a little more clearance and no problems since.
     
    johnny Lagdon likes this.
  9. zefer

    zefer VIP MEMBER

    Joined:
    Mar 18, 2013
    I had the
     
  10. zefer

    zefer VIP MEMBER

    Joined:
    Mar 18, 2013
    I ran into the same problem and I simply added some of the rubber insulators left over from the shorai
    Battery...they’re great for that and tons of other things to,easy fix
     

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