Bow thrusters to drive boat?

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Bow thrusters to drive boat?

Home Forums Beginners Bow thrusters to drive boat?

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  • #42928
    Mark Rayner 2
    Participant
      @markrayner2

      Hi

      I am new to model boats and am looking to build a boat that uses water propulsion to drive it. I need to ask whether bow thrusters would provide a suitable drive for a boat of about 4 – 5kg.

      I am not looking for speed as the boat will be used to carry bait for fishing. Steady drive, needs to be reversible, is what i am looking for along with reasonable battery life. I have considerd using caravan water pumps as an option. Have previously messed around with windscreen washer pumps but they were not pwerful enough.

      Hope this makes a bit of sense and any help/direction would be gratefully received. When I have sorted the drive method I will bback to seek assistance with the electrics!!!

      Thanks in anticipation

      Mark

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      #2294
      Mark Rayner 2
      Participant
        @markrayner2
        #42930
        Paul T
        Participant
          @pault84577

          Mark

          The problem is not just restricted to the weight of the model, the shape of the hull plays a major part in how propulsion systems work.

          A long thin and sleek hull might work with bow thrusters but I doubt that the same thrusters would be very effective in propelling a more boxy shaped hull.

          For a better answer you would have to provide details on the equipment such as the power of the thrusters and type of hull.

          Sorry to answer a question with a question.

          Paul

          #42932
          Dave Milbourn
          Participant
            @davemilbourn48782

            Bow thrusters are very inefficient and not recommended to be run for more than a few moments at a time. For bait boats I have found that bilge pumps are very popular, particlularly those made by Rule. The 1100 GPH 12v type is the most frequently used

            **LINK**

            I have several different wiring diagrams showing how to use the ACTion P94 Dual ESC with two, three and four of these pumps. PM me for details if you wish. BTW a short wide boat is better for manouvering and weight distribution than a long thin one. That's why tugs and frigates look the way they do! The catamaran style lends itself very well to this application.

            Dave M

            #42934
            Mark Rayner 2
            Participant
              @markrayner2

              Paul, Dave

              Many thanks for your quick replies and the guidance. I had a feeling that bow thrusters were not going to be the way forward so bilge pumps it is!

              Dave – thanks for the offer of help on the wiring and I I will PM you for info.

              Regards

              Mark

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