rudder setup

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  • dude123
    Senior Member
    • Jul 2014
    • 261

    #1

    rudder setup

    Does anyone know of how to switch the ose offset rudder https://www.offshoreelectrics.com/pr...prod=ose-80978 back to a inline, i continue to experience sever drag issues and would like to try inline. Thanks!
    Every one knows the best part about building a boat is SANDING!!!! Just kidding
  • Fluid
    Fast and Furious
    • Apr 2007
    • 8011

    #2
    What kind of “severe drag” do you notice? What boat are you running? Why do you think an in-line rudder will solve your problem?



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    • rol243
      Fast Electric Addict!
      • Apr 2017
      • 1038

      #3
      Yes the prop can not unload properly with a rudder behind it.

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      • dude123
        Senior Member
        • Jul 2014
        • 261

        #4
        My bad it is a daytona and the drag i notice is that the boat is always leaning to the right and i can see the offset bracket causing almost pulling the boat over to the right.. At first i thought it was the peop but i have changed props multiple times and it never goes away. Its not that i want to fully switch i just want to see if the bracket is my problem or not. At first i thought it was batteries, then prop, if anyone hs any other ideas that be awsome
        Every one knows the best part about building a boat is SANDING!!!! Just kidding

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        • MadProps
          Senior Member
          • Mar 2017
          • 236

          #5
          I have the same issue with the Genesis, they do roll from prop torque increasing the problem but.....they just sit low and that bottom bar of the offset drags in the water till 1/2 -3/4 throttle you can see the vertical spray of water off that bracket and also see it stop when the boat is on step

          here is my approach/mod I removed the bottom cross bar and eliminated 70% of the vertical spray and drag no loss in the integrity of the bracket with this removed, I tried to bend it.
          noticeable increase in performance & handling in turns and slower speeds

          WP_20170919_19_52_06_Pro.jpg
          WP_20170919_19_51_48_Pro.jpg

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          • rol243
            Fast Electric Addict!
            • Apr 2017
            • 1038

            #6
            The best cure for this roll over to right [ prop torque ] is to mount the strut center line approx 1/4 inch to the right side [ starboard ] you could also try mounting your battery pack on the Left side [ port ] both of these makes it hard for the prop torque to lift the left sponson . this is very common with many Mono hulls where they lean over on there right side as the strut is mounted dead center on transom , also blunt props don,t help.

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            • dude123
              Senior Member
              • Jul 2014
              • 261

              #7
              That makes alot of sense i thought of that but didnt know it it took away integrity, were u adjusting your batteries any certain way? Did rounding the edges almost help reduce drag?
              Every one knows the best part about building a boat is SANDING!!!! Just kidding

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              • MadProps
                Senior Member
                • Mar 2017
                • 236

                #8
                were u adjusting your batteries any certain way?
                in a Genesis there really isnt a way to adjust batteries to compensate for the torque roll

                Did rounding the edges almost help reduce drag?
                yes, I think it creates a little lift as opposed to the obvious drag from a blunt face

                actually Im going to find a stand alone rudder bracket that is small enough to fit and mount it on the right side of the transom and eliminate that offset bracket completely and the drag caused by it, I may have to relocate the servo to accomplish this but it will be worth the effort

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                • dude123
                  Senior Member
                  • Jul 2014
                  • 261

                  #9
                  Definatly that would be cool to see, well i will definatly give it a go and shave it down
                  Every one knows the best part about building a boat is SANDING!!!! Just kidding

                  Comment

                  • MadProps
                    Senior Member
                    • Mar 2017
                    • 236

                    #10
                    also blunt props don,t help
                    also too big a of a prop
                    anyone know if a de tounged prop which unloads the prop will decrease the torque roll?

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                    • rol243
                      Fast Electric Addict!
                      • Apr 2017
                      • 1038

                      #11
                      if your de-tounging a prop you are reducing some pitch area , so Yes this would have to decrease torque roll somewhat.

                      Comment

                      • MadProps
                        Senior Member
                        • Mar 2017
                        • 236

                        #12
                        Originally posted by rol243
                        if your de-tounging a prop you are reducing some pitch area , so Yes this would have to decrease torque roll somewhat.
                        thanks for that, In theory in my head it would unload the prop for more rpm and possibly reduce some torque roll....win win .
                        Im going to de tounge a couple sizes that the genesis likes to see if I can eliminate more of that roll its known for....
                        I really like this hull, Im not building a SAW racer I just see some room for improvement in this rig.... like everyone else I also wish it were wider.

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