Water Pumps

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Water Pumps

Home Forums Model Boats Water Pumps

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  • #52494
    Fred Graham 1
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      @fredgraham1
      Hi Folks,
       
      I have noticed that some commercial model engine suppliers (E.G. Hemmens and Monahan) have water pumps driven directly from the crank shaft. They also have the valves arranged in a horizontal manner.
       
      In all the Model Engineering mags, water pumps are usually geared down to 4 or 5 to 1 to avoid innefficiency, I believe, and the valve boxes are always vertical so that there is a degree of ‘gravity assist’ to valve seating.
       
      If anyone is using plant  with these characteristics, I would be interested in their experiences of performance and reliability.
       
      Thank you, All the best, Fred Graham
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      #4054
      Fred Graham 1
      Participant
        @fredgraham1

        Crank tp pump drive ratio & Valve box layout

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