I need Shockwave 26 help

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  • Maggster
    Member
    • Jun 2007
    • 41

    #1

    I need Shockwave 26 help

    Hey guys I just got a Shockwave 26 and a Mini-V used. The guy I got them from had converted the SW26 to straight drive (no strudder) and I put a 40.5mm Graupner carbon prop on it. When we went out to run them, the completely stock Mini-V is much faster the SW26. Now I am new to boats, but it seemed like I could definitely tell when the MV stepped up on plane, but couldn't tell any similar step on the SW. It looks like the nose is being pushed down into the water. Any ideas? I looks to me like the prop comes out at a pretty steep downward angle. Basically, I think he just pulled the tube from the strudder out and put the new one in its place. It is stock except for the straight shaft. Running IB4200 6-cell in the SW and IB1400 in the MV.

    I have to leave for work shortly, but I'll try to get pics and maybe a video tonight.

    Thanks
  • saleens7
    Fast Electric Addict!
    • Apr 2007
    • 1108

    #2
    the reason the nose is being pushed down in the water is because the shaft is at such a downward angle...that mini v is pretty quick too....the SW36 is kind of slow unless you upgrade it....
    saleens7, the wookie of rc boating

    Comment

    • Maggster
      Member
      • Jun 2007
      • 41

      #3
      What is the solution? Should I switch back to the strudder or should I look at cutting the bottom of the hull where the prop exits and running the shaft out of the bottom of the V?

      As fas as upgrading goes, I would like to keep the stock esc, but I was thinking of a 600 motor.

      Thanks for the reply

      Comment

      • saleens7
        Fast Electric Addict!
        • Apr 2007
        • 1108

        #4
        i think you should just put the strudder back on....you can upgrade to a 600....i did with mine (and a larger prop....the one on it right now should be good) and it did increase in speed 2-3mph....
        saleens7, the wookie of rc boating

        Comment

        • Maggster
          Member
          • Jun 2007
          • 41

          #5
          The prop is a 4mm Graupner carbon. If I understand right it won't fit directly on the strudder setup, but I'll look at it when I get home.

          Thanks for the advise, I sure need it.

          Comment

          • saleens7
            Fast Electric Addict!
            • Apr 2007
            • 1108

            #6
            wait, is it using a 4mm solid shaft? if your willing to, you could pull the shaft (and stuffing tube) out and buy a 1/8" to 4mm flex coupler so you can re-install the shaft so it hase less of a downward angle.....
            saleens7, the wookie of rc boating

            Comment

            • Maggster
              Member
              • Jun 2007
              • 41

              #7
              Please understand that I am new to all of this, but it looks like it has a flexible coupler that is about 1-1/2"long between the motor and the shaft that the prop is on. Is that what you mean?

              Comment

              • saleens7
                Fast Electric Addict!
                • Apr 2007
                • 1108

                #8
                this is what a flex coupler would look like

                it has a peice of flex shaft between where it hooks on to the motor shaft and prop shaft
                Attached Files
                saleens7, the wookie of rc boating

                Comment

                • Maggster
                  Member
                  • Jun 2007
                  • 41

                  #9
                  Yes it looks exactly like that.

                  So what would I need to do? Just redrill a hole for the tube so that it exits a little higher?

                  Comment

                  • saleens7
                    Fast Electric Addict!
                    • Apr 2007
                    • 1108

                    #10
                    actually i would try to make the propshaft comes out more parallel to the bottom of the hull....so it wont come out through where the origonal propshaft did, but out of the transom....that way you can keep the motor in the same position.....
                    saleens7, the wookie of rc boating

                    Comment

                    • Steven Vaccaro
                      Administrator
                      • Apr 2007
                      • 8718

                      #11
                      Is there a way for you to post a picture of the transom and interior?
                      Steven Vaccaro

                      Where Racing on a Budget is a Reality!

                      Comment

                      • Diegoboy
                        Administrator
                        • Mar 2007
                        • 7244

                        #12
                        Originally posted by Steven Vaccaro
                        Is there a way for you to post a picture of the transom and interior?
                        Worth 1000 words!!
                        "A quick temper will make a fool of you soon enough."
                        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bruce Lee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                        Comment

                        • Maggster
                          Member
                          • Jun 2007
                          • 41

                          #13
                          I am finally home from work. I have the boat ready and there is a lake about 5 minutes away. I am going to try to take some pics and video. Be back shortly.

                          Thanks

                          Comment

                          • Maggster
                            Member
                            • Jun 2007
                            • 41

                            #14
                            Here are some pics and a crappy video.

                            VIDEO
                            Attached Files

                            Comment

                            • saleens7
                              Fast Electric Addict!
                              • Apr 2007
                              • 1108

                              #15
                              i cant really tell how it would ride up on the nose...your in a turn the whole vid......could you take a vid longer that 5 seconds?

                              seeing how the propshaft comes out, it is definately at too negative of an angle....i would remove the shaft and stuffing tube (the stuffing tube probably wont survive though) and cut a hole on the bottom of the transom and have the shaft exit there....are you using a 1/8" shaft? if so, how do you use a 4mm threaded prop and coupler....i can only find a 1.8: to 4mm coupler. but not a 1/8" to 1/8" one.....
                              saleens7, the wookie of rc boating

                              Comment

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