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    Re: Prop-walk.
    From: Walter Guinon
    Date: 2003 Apr 23, 05:55 -0700

    Let me first say that I like prop walk, it makes landing port side to much
    easier.
    
    I beleive the primary cause is the deviation of the shaft angle from the
    horizontal. In the extreme case with a vertical prop shaft, the reaction to the
    shaft torque tends to YAW the vessel. In the other extreme, with a horizontal
    shaft, the reaction to the shaft torque tends to ROLL the vessel. Intermediate
    cases have a mixed reaction; sine of the angle and so forth.
    
    
    "Land is just a hazard to navigation"
    
    
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