Prop installation question

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  • djviko44
    Junior Member
    • Nov 2014
    • 26

    #1

    Prop installation question

    Hello everyone! I'm new at the forum and also at rc speed boating...

    I have a brand new AquaCraft UL-1, this last weekend i went on and give it its first test and the plastic prop got broken...

    I then bought a new AquaCraft L40x57 3 prop (supposed to be best for my boat) and when i tried to install it, the prop won't adjust correctly to the drive dog...

    it seems as if my prop came not well built up (with some irregular shapes which block the drive dog to go all the way inside of the prop...)

    Is it correctly installed or do i need to fix this? (buy another drive dog or how should i fix this so it's installed correctly?)

    thanks a lot!

    victor.

    IMG_8157.jpgIMG_8160.jpgIMG_8156.jpgIMG_8158.jpg
  • SirBudman32
    Senior Member
    • Aug 2011
    • 625

    #2
    There is nothing wrong with the drive dog. First thing is you need to Dress (clean up) the prop, Second is it need to be sharpened and balanced. If not you will probably never get it to work on your boat. I also have a Ul-1 and have never ran that prop on it but there is a lot of info on here from people that have tried it and all same the same thing. Most be SHARP before it will work on the boat.
    Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

    Comment

    • Fluid
      Fast and Furious
      • Apr 2007
      • 8012

      #3
      Thanks to the OP for including excellent photos to help us help him. SirBudman is right about using a small file to remove the casting flashing in the prop slot, this will allow the prop to fit on the drive dog. This flashing is common on most props by the way. I also noticed that there is no gap between the drive dog and the strut, if this is the way the OP runs the boat it is wrong. He must adjust the flex cable so that there is a 4mm gap between the front of the drive dog and the back of the strut. Otherwise there will be excessive friction in the drive with lower speeds and higher amp draw and temperatures.




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      Comment

      • djviko44
        Junior Member
        • Nov 2014
        • 26

        #4
        Thanks a lot with the information guys! I'll do as directed and repost once im finished...

        This is the way i got my boat from the online store (Im a total newbie and starting to learn)

        Any other tip is appreciated.

        Best regards

        Comment

        • dasboata
          Fast Electric Addict!
          • Dec 2010
          • 3152

          #5
          I use a reinforced cut off wheel to clean up the drive dog slots !!

          Comment

          • djviko44
            Junior Member
            • Nov 2014
            • 26

            #6
            Thanks for the tip...

            I already cleaned the prop slot... and think it got in alright!

            on another hand... i tried to fix the gap between the drive dog and the back of the strut... does this look better Fluid? (thanks for the tip by the way)

            prop space.jpg

            I'm gonna have some trouble setting up my prop correctly since i dont have any equipment for balancing or anything... I live in Mexico and i don't have too much places to get them balanced (but i hope to find one soon)

            Comment

            • SirBudman32
              Senior Member
              • Aug 2011
              • 625

              #7
              The gap should be as wide as the flex is thick. You need more gap then what you have there.
              Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

              Comment

              • djviko44
                Junior Member
                • Nov 2014
                • 26

                #8
                Ok, Thank you i will readjust it tonight...

                Comment

                • SirBudman32
                  Senior Member
                  • Aug 2011
                  • 625

                  #9
                  Here are a couple of pics of my Ul-1. you can see the gap.

                  IMG_20141113_102610.jpgIMG_20141113_102556.jpgIMG_20141113_102624.jpg
                  Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

                  Comment

                  • djviko44
                    Junior Member
                    • Nov 2014
                    • 26

                    #10
                    GREAT!! thanks a lot!!

                    Comment

                    • SirBudman32
                      Senior Member
                      • Aug 2011
                      • 625

                      #11
                      No problem, Your welcome.
                      Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

                      Comment

                      • djviko44
                        Junior Member
                        • Nov 2014
                        • 26

                        #12
                        Hi SirBudman, me again...

                        I have a question, i tried to readjust the drive dog but the flex shaft has a little plain space where i think needs to be setup the drive dog screw... (here's some pics)

                        IMG_8184.jpgIMG_8185.jpg

                        So my question is, for adjusting this gap between the drive dog and the shaft, do i need to adjust the shaft on the other end? (where the Motor Cable Coupler holds on to the motor?)

                        how far from the motor should i install it? (right now i had to release it in order for me to adjust the flex) as you can see:

                        img.jpg

                        I'm sorry for so much questions... thanks in advance...

                        Best regards,

                        Viko.

                        Comment

                        • SirBudman32
                          Senior Member
                          • Aug 2011
                          • 625

                          #13
                          Yes the flat spot is where the drive dog sets. As far as the Collet, slide it back on to the motor shaft and tighten the set screws back down. Loosen the collet nut and pull the flex shaft out a little bit to get the gap you need at the drive dog/ prop end.
                          Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

                          Comment

                          • djviko44
                            Junior Member
                            • Nov 2014
                            • 26

                            #14
                            Great, thanks a lot... let me show you... i think it looks better now...

                            1 ready.jpg1 ready 2.jpg

                            Comment

                            • SirBudman32
                              Senior Member
                              • Aug 2011
                              • 625

                              #15
                              You got it.
                              Modified Jae21, Stock Jae21, Cheetah, Ul-1, Shock Wave 26 V2 (Rescue Boat).

                              Comment

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