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  • Bouyancy hacked?

    Hello all,

    I was sitting in the bathtub and playing with an empty bottle. The bouyancy force while pushing something under water is quite noticable.

    I started thinking how to utalize this.

    So i came up with a concept and would like some opinions.

    I think that the bouyancy of a submerged object can be utalized by using a balanced rotating setup.

    The force it takes to turn a balanced wheel seems less then the force created by bouancy.

    If that is true, then you can think of utalizing it. This can be mechanical, electrical, or whatever you think of.

    I made an example animation and a picture, with a linear generator. (But this could also be a mechanical setup)

    The tubes are filled with water, and two have magnets inside with floating endcaps, this will also streamline the waterflow.

    The other two tubes have magnets with caps that doesn't float.

    When you turn the wheel, it stays balanced, so the force needed to turn the wheel could be less then the bouyancy/sinking created.

    Its just a concept drawing, not in scale. Magnets are a bit large compared , to the floating caps. The magnets with the green caps float, and with the red caps sinks.

    (PS. I noticed in the animation a strange jump.. sorry for that)




    Last edited by Cherryman; 01-23-2010, 10:07 PM. Reason: new gif and some text adition

  • #2
    Hey Cherryman...Great animation

    I am seeing something here that you might consider. Think of each tube 12:00 and 6:00 as being one tube, also 9:00 and 3:00 one tube now think of it as two tubes crossing. For this example will call them vertical tube and horizontal tube. Now if you have only one bobber magnet for each of the two tubes that can float from 6:00 up to the 12:00 position through the center intersection of both tube sets, then you don't need sinker magnet sets. So now see what happens...when wheel gets to the 6:00 position the floatation of that magnet carries it up to 12:00 position leaving that 6:00 tube now lighter at the end so going up towards the 9:00 position. Like wise the 12:00 now has the weighted magnet as it travels toward the 3:00 position aiding in the wheel turning as the weight is now at the outside of the tube...gravity does the rest. Notice also that the two floater magnets will never go through the center at the same time, eliminating then them getting jamed at the intersection at the same time. They will only start to float once they hit the 6:00 position, allowing for straight shot to the top

    Don't know if I communicated this the way i see it , but I think you have something here.

    Hope you don't mind my thoughts on this.

    Good Day!!....24

    Comment


    • #3
      Oh my, now you have my mind inventing a demo model with 6 tubes making 12 spokes to the wheel. To do this no intersection needs to be built..just 6 long tubes stacked one on top the other and held by a center hub to keep them in position. If you used clear PVC pipe you could make a model that you could see through very simply. Then you would need some neo rod magnets a little smaller in dia. that the inside dia of the clear tubes and put some bubble caps on them for floating them up. All you would need is 6 neo magnets. The clear PVC is available with clear PVC fittings, but the end caps could be cheap white caps as this clear PVC is very expensive, fittings are really expensive. Anyway no need for a center intersection just use 6 long pipes and stack em and hold them at the center in position. One other thing you will need some sort of resistance as it turns or you will see it spin fast then almost stop and spin fast again. I made a similar type device years ago and that is what it did. My unit was a water wheel concept where the buckets unfolded from 12:00 to 3:00 position so that it created the greatest amount of leverage going down on that side...it would then fold back inward from 6:00 to 9:00 position making the wheel off balance with weight going down out the furthest distance.

      Just some more input on this.

      Good Day!!!...24

      Comment


      • #4
        Hi 24,

        Tnx! , i understand what you mean and i see the possibilities.

        The "technical" shape / size etc can in fact be in a few different forms. I have a few other designs as well, but the concept stays the same.

        For now i'm mostly intrested if anyone can "shoot" the concept; in short :

        "Bouyancy creates more force then turning a balanced wheel"

        I can't find a reason why it will not work.. And maybe not the exact in the way a drawn it, but the concept itself, mechanical or otherwise..

        Just push an empty bottle below the waterline and you feel the force, that should be more then enough to turn a balanced wheel.

        Tnx and keep "shooting"
        Last edited by Cherryman; 01-23-2010, 11:03 PM.

        Comment


        • #5
          Oh Yeah...lol

          Push a 2 liter bottle under water and release it and it could smack ya in the face with great force, that would wake you up fast to the reality of what your talking about.

          Good Day!!....24

          Comment


          • #6
            Due to the water, the movement will not be very fast, but you can scale it up to have more "brute" force.. And ofcourse you can multiply it.

            With a mechanical setup , straight feedback should be possible, either rods or magnetic connections (I prefer magnetic connections, due to the fact its easier to keep the tubes sealed)

            Anyway, as i already stated: There are many possibillities if the concept itself is genuin.
            Last edited by Cherryman; 01-23-2010, 11:16 PM.

            Comment


            • #7
              You just gave me another Idea, your gonna have to stop it!!!

              this is sticking with your coil around the tube idea, the boyancy is now in air instead of water.

              Ok Imagine 8 vertical tubes with magnets in close tolerance to the tube. Tubes wrapped with coil about 1/4 the way down from top of tube. Now using a small burst of air at the bottom underneath the magnet, propelling said magnet to the top where it then free falls back to baseline. You have the magnet then passing through the coil twice, once up then down. Now time the event like a V8 motor so each magnet is fired like pistons. The coils could be half the length of the tube on the outside. Might make an interesting magnet motor. What do you think?

              Good Day!!...24

              Comment


              • #8
                Yet another way.

                Place 8 tubes stacked one on top the other forming 16 spokes in a wheel configuration all wrapped with your coils and let the magnets free fall as the wheel is turned. Turn the wheel with a low power DC motor geared to run the wheel slower. Could we produce enough magnetic electricity to run the small DC motor to turn the wheel?

                Just a thought

                Good Day !!...24

                Comment


                • #9
                  Thats a nice possibility too , a V8 sounds also better

                  But i do see a "loss" off power because you have to have an airpressure that exceeds the water pressure (BAR) to be able to inject it at the bottom.

                  A way around that would be to release a bit of water while letting the air in, but then you would have a refill somewhere.
                  It also would include valves timing.. all possible maybe.

                  PS. Stack the 8 cilinders vertically and let one airburst travel up trough all the eight cilinders, when te piston reaches the top, the air escapes to the next cylinder, leaking water to the one below.. Now you only have to refill one!

                  It might be a sort of spinnoff, but for start it's overcomplicating things, IMHO.

                  But... Keep shooting
                  Last edited by Cherryman; 01-23-2010, 11:46 PM.

                  Comment


                  • #10
                    Originally posted by 1NRG24Seven View Post
                    Yet another way.

                    Place 8 tubes stacked one on top the other forming 16 spokes in a wheel configuration all wrapped with your coils and let the magnets free fall as the wheel is turned. Turn the wheel with a low power DC motor geared to run the wheel slower. Could we produce enough magnetic electricity to run the small DC motor to turn the wheel?

                    Just a thought

                    Good Day !!...24

                    eeehmmm whenn it comes to electronics... I'm lost!

                    But in the original setup (the posted animation) the idear is that the coils produce enough to keep the wheel turning, and maybe a little more to charge.... anything you like~! It maybe slow... but 24/7..

                    Comment


                    • #11
                      Originally posted by 1NRG24Seven View Post
                      Yet another way.

                      Place 8 tubes stacked one on top the other forming 16 spokes in a wheel configuration all wrapped with your coils and let the magnets free fall as the wheel is turned. Turn the wheel with a low power DC motor geared to run the wheel slower. Could we produce enough magnetic electricity to run the small DC motor to turn the wheel?

                      Just a thought

                      Good Day !!...24
                      I was also thinking in this example to place a small metal object at the end of each tube far enough away from the magnet so the magnets weight would overcome the attraction at exactly 12:00 position, releasing it to free fall. No water in the tubes and no air just a vacuum.

                      What do you think?

                      Good Day!!...24

                      Comment


                      • #12
                        Originally posted by 1NRG24Seven View Post
                        I was also thinking in this example to place a small metal object at the end of each tube far enough away from the magnet so the magnets weight would overcome the attraction at exactly 12:00 position, releasing it to free fall. No water in the tubes and no air just a vacuum.

                        What do you think?

                        Good Day!!...24
                        Good thinking.

                        In a way we think alike on this. I also considered "outside" magnets for timing and releasing (in the water at first) but i think it's overcomplicating things, at the start.

                        If the pick up coils are not efficient enough. I don't know much about electronics, but i have seen linear generators, i do not know the efficientie of those things. The speed maybe slow, but the force is good!

                        So I do have a (not so fancy) example how to utalize this in a mechanical way.

                        Use another magnet (or maybe iron) at the outside of the tube. Maybe a little wheel or a ball baring in between. And you have a mechanical connection, in a very simple way. This you can use, to drive a flywheel or whatever, generate feedback and even more with it.


                        Comment


                        • #13
                          Cherryman I am most impressed with your animation skills, what program are you using to do that?...is it hard to learn it?

                          Good Day!!...24

                          Comment


                          • #14
                            Originally posted by 1NRG24Seven View Post
                            Cherryman I am most impressed with your animation skills, what program are you using to do that?...is it hard to learn it?

                            Good Day!!...24
                            I'm using Rhino3d to design and VUE to render and animate. It's not hard to learn, but in the beginning it does takes time.

                            But when you have to start I can recommend Blender, it's free and with a lot of possibilities, even physics simulation, waterflow etc. A steep learning curve, but hey! it's free!

                            blender.org - Home

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                            • #15
                              Ah Yes...a magneticley coupled clevis or cable attachment point... It would move it as the magnets moved .....hmmm good idea.

                              Good Day!!...24

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