Dr. Super-Evil Hydro II - Shaft

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  • zue
    Junior Member
    • Apr 2010
    • 6

    #1

    Dr. Super-Evil Hydro II - Shaft

    Hi,
    I bought Dr. Super-Evil Hydro II. The "instructions" is not clear how flexible shaft is the route from strut up the engine. What is the best solution, so that the length be as small and have the lowest friction1? Thanks.
    Attached Files
  • sundog
    Platinum Card Member
    • Feb 2009
    • 878

    #2
    Doesn't the shaft go on the opposite side from the rudder? If so, you might have the motor bolted to the wrong side of the mount. If I didn't have clear instructions, I'd assume that the flex has been cut to length and the strut goes directly behind the motor (if that doesn't limit battery placement) - wherever that places the motor. I like a gradual bend in the stuffing tube (motor mount tilted) which seems to quiet a bouncy flex, though it has a bit more friction. Some agree 'J' bends have less friction but others say two bends are best (motor mount horizontal) to tame the flex shaft. I don't know that there is a cut and dry method, you're bound to get different opinions about that! Good luck with the build.
    Last edited by sundog; 12-23-2011, 05:28 PM. Reason: bad grammar
    Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

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    • RaceMechaniX
      Fast Electric Addict!
      • Sep 2007
      • 2821

      #3
      Zue,

      These boats are intended to have the motor offset, hence the mount and assymetric shape of the deck. I believe you need to angle the mount towards the centerline of the hull and you run a slightly bent drivline (both vertically and horizontally) to meet the strut. I would try and make a single bend if possible and as gentle as possible from front to rear.

      TG
      Tyler Garrard
      NAMBA 639/IMPBA 20525
      T-Hydro @ 142.94mph former WR

      Comment

      • zue
        Junior Member
        • Apr 2010
        • 6

        #4
        Thanks to all for you answered me. I'll come back with pictures.

        Comment

        • darioellider
          Junior Member
          • Dec 2009
          • 19

          #5
          It´s very interesting, i have a super evil too. I have to mounted it but My son was born yesterday.

          Comment

          • zue
            Junior Member
            • Apr 2010
            • 6

            #6
            Congratulations for your baby.

            Comment

            • zue
              Junior Member
              • Apr 2010
              • 6

              #7
              As promised, back with pictures
              Attached Files

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              • RaceMechaniX
                Fast Electric Addict!
                • Sep 2007
                • 2821

                #8
                Looks good Zue,

                Tyler
                Tyler Garrard
                NAMBA 639/IMPBA 20525
                T-Hydro @ 142.94mph former WR

                Comment

                • Boaterguy
                  Fast Electric Addict!
                  • Apr 2011
                  • 1760

                  #9
                  offset driveline and single back sponson? this must be a gas boat.

                  Comment

                  • Rumdog
                    Fast Electric Addict!
                    • Mar 2009
                    • 6453

                    #10
                    What? Not even close to a gas boat.

                    Comment

                    • Boaterguy
                      Fast Electric Addict!
                      • Apr 2011
                      • 1760

                      #11
                      i just thought since both the driveline is offset and there is one rear sponson, both strategies to counteract prop walk, put that together with the fact that gas boats use bigger props and you've got an assumtion!
                      edit: i meant the hull, not what's going into it.

                      Comment

                      • Rumdog
                        Fast Electric Addict!
                        • Mar 2009
                        • 6453

                        #12
                        It's around 30", so... the offset drive/motor works well in lots of different types of boats. Gotta keep that turn fin planted! The single rear ride pad is all it needs to help the back end slide in the turns (right turn only).

                        Comment

                        • sundog
                          Platinum Card Member
                          • Feb 2009
                          • 878

                          #13
                          Originally posted by RaceMechaniX
                          Zue,

                          These boats are intended to have the motor offset, hence the mount and assymetric shape of the deck. I believe you need to angle the mount towards the centerline of the hull and you run a slightly bent drivline (both vertically and horizontally) to meet the strut. I would try and make a single bend if possible and as gentle as possible from front to rear.

                          TG
                          I don't understand why you would offset the motor, but run the driveline back to the center of the transom. You can't put a battery alongside the motor because the mount is in the way. I have seen many instances where the driveline and strut was offset to one side of the hull to counter prop walk, but don't understand the logic here. Please explain; there must be something that I'm not picking up on.
                          Legend 36 sailboat, KMB Powerjet Ed Hardy Viper, ABC jet pwrd BBY Oval Master, ABC Hobby Jetski, NQD Tear Into's, HK Discovery 500, MickieBeez pwrd Jet Rigger!, Davette/Gravtix jet sprint, KMB Powerjet Pursuit, NQD pwrd Jet Catamaran!,Steam pwrd African Queen, Sidewinder airboat, Graupner Eco Power

                          Comment

                          • zue
                            Junior Member
                            • Apr 2010
                            • 6

                            #14
                            I think the back is designed to help in turns, back of boat is not straight.
                            Attached Files

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                            • Boaterguy
                              Fast Electric Addict!
                              • Apr 2011
                              • 1760

                              #15
                              Originally posted by sundog
                              I don't understand why you would offset the motor, but run the driveline back to the center of the transom. You can't put a battery alongside the motor because the mount is in the way. I have seen many instances where the driveline and strut was offset to one side of the hull to counter prop walk, but don't understand the logic here. Please explain; there must be something that I'm not picking up on.
                              the boat is designed to run an offset setup, he wants to run centered.

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