Moments at contact tyre patch and wheel spindle

  1. hi guys this is an image of the rear wheel of a push bike going into a corner as well as what i think are relevant forces,
    i need to calculate the moments or torque at A (the contact patch) and B (the hub centre)
    this is to calculate the force on the left hand side of the frame and right hand side of the frame while in a corner
    Fsr = the force going through the suspension
    Fc = lateral cornering forcer on the rear wheel
    phi = lean angle
    MG = mass & gravity
    t = the cross sectional radius of the tyre

    i can and have calculated the above parameters through lot of prior equations that take into account the wheelbase, velocity, friction, radius of the turn ect. but i think that the above are the require ones to calculate this... if there is an easier way please let me know

    im sure its quite simple really but i have either over thought it are just been daft

    cheers for any help guys but could you please explain your reasoning behind your answer so that i can verify it please
  2. jcsd
  3. Baluncore

    Baluncore 3,203
    Science Advisor

    Your link is not visible. Site claims "Unauthorized".
  4. the above link as an attachment

    sorry the above link doesnt work as i said thought im not 100% these are the relevant forces but i am fairly confident also tho point out this is assuming that it is a 2d diagram should be a simple moments equation really (i think) also it can be assumed the bike is stationary and that it is simple leant over with a machine applying the forces if it makes it easier to calculate...
    thats the torque or moments about point A ( contact patch ) and B the wheel spindle centre
    but any help would be great whether in motion stationary or anything, if you ignore the forces i have written and know another way very happy to listen to that too thanks alot guys cheers

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