Yeah that would be great if you love going sideways downwind at a rate of knots, or if you really love the sensation of spin out. Can't wait to see you give it a go

olympics 2020

Problem is when the magnets counterbalance your weight and then you come off the board suddenly shoots miles up due to there not being any weight

Kill switch or even a leggy might be helpful

Essentially, it sounds like you just redesigned a very expensive hydrofoil!

Macro said...“windsurfing board is filled with liquid nitrogen that activate low temperature superconducting magnets. Such a magnet has this property that repel everything”.
“or prove now that is impossible".

Well, I've got a few minutes between jobs, so I'll bite:

If the magnets repel everything they also act upwards, so the owner is going to be “repelled” upwards too. Although the owner has his foot in the footstraps, the repulsive force will be so great that the footstrap screws will pull out of the board*. To overcome this, the footstrap plugs have to be deepened, the footstrap screws have to be lengthened, the weight of the board will increase, so the repelling magnets will have to be strengthened, which will mean longer footstrap plugs and screws........etc etc, etc. A vicious circle is being born.

*Mighty interesting even trying to put the footstrap screws in. How do you press downward on the screws when the magnets are repelling upwards? On the other hand, you wouldn't have to worry if you dropped the screws (although it would be mandatory to wear safety glasses when fitting the footstraps. On an OH&S level, the board manufacturer would have to include safety glasses with a new board: one windsurfer poked in the eye by “repelling” footstrap screws would cause the board manufacturer to be sued out of existence by the firm of Grabbit and Runn, Barristers and Solicitors).

Thus, the price of the board would increase, the inventor would turn to buying magnets in China, the Chinese have spotty QA so the repelling force of the magnets would vary, the board would take on a “lean” in one direction leading to increased air resistance (and the worst case scenario would be a board capable of only doing circles), etc, etc, etc.

Macro....give it up.

WindmanV said...

If the magnets repel everything they also act upwards, so the owner is going to be “repelled” upwards too.

1) Repealing force is spread over whole board surface.
Unless you have extreme "duck feet syndrome" (your feet surface is similar to the surface of the board ) it shoudn't be a problem at all to stand or even walk on such board
2) By the thickness of the board disatnce to the down is different to that facing up, and repealing force is conversely exponentially proportional to that distance.

Macro

You go first. One way or another you will be in the headlines.

If successful you will have followers, if not , then you won't know about it

Sounds like you can't lose!!

Mark _australia said...
Then again a levitating waveboard would get some serious air time :)

I guess hovering wave board will be quite a fun.
Instead of wind for propulsion will be using gravitational force .
Slightest wave could carry you indefinitelly without any water resistance
I guess body boarding will be more efficient as standing up on that much slippery board will be more difficult.

Macro,

when you talk about "low temperature superconducting magnets" you probably mean "high-temperature superconductor coiled to form an electromagnet", right? You may have to cool that with liquid helium. And lug along a portable nuclear plant to power it, unless you are tethered with a power cable. And the water would probably have to be injected with ferrous particles. But apart from such small details (sure you can solve them in a few months), the idea is of course workable Proof of concept - Back to the Future 2!

On a more practical note, I suspect that some aircraft technology will eventually filter through and modernize sailing. For example, there can be passive stall indicators on the sails allowing for optimum in-sheeting. The board can have active canards to adjust the attitude (roll, pitch, yaw) while sailing. The GPS unit can project the speed and bearing on the sail (like a HUD). The boards can have active rockerline (straightens and flexes as required). Lots of scope for improvement, IMO...

Macroscien said...


....
SC magnet repeal surface and could stay above (hover) without using any energy at all

Except, perhaps for the considerable energy needed to produce/separate the liquid nitrogen (and replenish it as it boils off to atmosphere)

Macroscien said...


Such a magnet has this property that repeal everything including water so board will hang few centimetres above the surface.
To provide basic stability and resistance at least one fin is penetrating water surface.

So a quick question...

If you repel the water's surface that is directly below the board, what stops the board from squishing that surface layer down until that layer is well below the rest of the water's surface? This would mean that it would still be 'floating' (just not getting wet)

ie. What provides the vertical force to levitate the board plus rider?

I think you might find it a lot easier to just build a landboard

Skid said...

Except, perhaps for the considerable energy needed to produce/separate the liquid nitrogen (and replenish it as it boils off to atmosphere)

Agree
We are a little bit unlucky here
but if we only had telescope strong enough
I bet that Jupiterians and other aliens surf levitatimg over their liquid hellium or nitrogen oceans already for free

what ever you blokes are on pass some this way!

or call Michael J Fox, he had the self levitating skateboard thing dialed in back to the future...along with the time machine and flying train!

^^^^^^^^^^^^^^^^^ just finished the whole movie on Youtube.