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Re: prop clearances

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  • chodges31711
    I think the problem with too little clearance is vibration (noise?) created as prop blades pass by the narrow spot. The vibration is less with more blades
    Message 1 of 7 , Oct 1, 2007
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      I think the problem with too little clearance is vibration (noise?)
      created as prop blades pass by the narrow spot. The vibration is less
      with more blades and/or more clearance.

      Charles

      --- In AtkinBoats@yahoogroups.com, "adharvey2" <adharvey@...> wrote:
      >
      > In the article accompanying the plans for Sand Dollar, Wm. Atkins
      > writes:
      > "There is ample clearance for a propeller diameter of 15 inches. I
      > think it may be of interest to explain that the tips of the blades can
      > clear the bottom of the horn timber by very little and still perform
      > efficiently. There is little, if any, advantage of two or three inches
      > space between the tips of the blades and the hull.
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