'Defy'-Grav magnets idea.

[Senor_Grunt]

better idea put the magnets in boots and mass produce them and have a magnet rink instead of ice rinks million $ idea (be sure to give me some of the cut )

ill call it the patchesreusch magrink i thought of it first

haha ok, ill give you the name, which is about 1/4 of the profits, and sneakyn8 gets another 1/4 of the profits, and i get the other half....

[FleetAdmiralBacon]

Don't I have to be qualified to buy electromagnets though? And i thought the disc ones would have worked better on the board.

No, you don't. You can make your own electro magnet out of a nail and coper wire (granted, not the kind we're looking for, but just a simple example) The kind that would be used would be an electromagnetic plate, where one large square surface is positive and the other negative (based on direction of current)

Boots would be problematic for quite a few reasons, balance is the biggest.

[jks]

If you've ever tried to get a magnet to levitate above the magnetic field of another magnet without anything to steady it, it will kind of slide off and away. This is because magnetic field lines are curves that come out of either pole going into the other. Unless you have some way of making sure it stays perfectly upright you cannot just float over a magnet. Not to mention the fact that it would take a sizeable chunk of neodymium to make a magnet powerful enough to levitate the human body, and when you're dealing with that much magnetic strength the magnet would just flip over and get attracted to the other magnet with a force capable of breaking bones :/

[Guest]

i see what your getting at there it makes more sense if its a downhill type thing like snowboarding except without snow and your hovering.

[FleetAdmiralBacon]

A sheet of magnets would create a bumpy, but level magnet field, so you'd really just get stuck in the lower areas between the bumps and float there, little bit of push and you'd be thrown over the higher parts. Constant movement would be a lot smoother.
Natural magnets are just not a good idea, primarily because they would cost a fortune, but also because you'd want to be able to turn it off and/or adjust the power. Levitating 120 pounds with a bunch of electromagnets is easy, why does everyone seem to think you can't lift 120 pounds with a, say, 3'x3' sheet of electromagnets (hovering over an undefined area of electromagnets)?

[jks]

Because its still not that simple. You need opposing forces in every direction to cancel out gravity with magnetism. Magnetic fields aren't rigid, so you won't just float in the "ruts," the flux lines will realign themselves in order to relieve the field tension. The situation is analgous to if you were to have a giant fan every few inches or so, do you think you could get a 3x3 sheet of plywood to be very stable in that situation? I'm figuring out how much magnetic field strength it would require to apply enough force to cancel the weight of a normal 140 lb human. Will edit later when I have the result.

Ok, so it turns out the math involved with calculating magnetic vector force uses a bit more advanced math than I'm willing to learn in the next 20 minutes because I'm tired. However, from this wiki article on the matter, it should be clear that it is in no way possible to do what you want to do with the resources available to a typical citizen. To contrast it takes 16T to levitate a frog. Now admittedly this isn't using the repulsive force of another magnet, but rather the diamagnetic properties of the water that constitutes almost 90% of the frogs body. But it should be quite clear just how many factors there are involved in making 2 magnetic fields cancel gravity.

you lot realise you need a special qualification for the kind of strenth magnets your suggesting...

Just like the FCC has a bunch of regulations on transmission devices, but I'm sure many people rig their own antennas up without reading up on certifications.

Plus, if he's using a bunch of small magnets, the necessary qualifications might only apply to singular large magnets, not multiple small ones.

yes but an arial cant make every knife in your kitchen fly at you with deathly speeds can it?

Once again...if you have lots of small magnets, they won't amplify each other and radiate outwards at huge distances. One large magnet will have a huge distance, but many small magnets will have a strength at nearer distance.

Wrong and wrong. Magnetic fields are what we call a vector field, that is the lines of magnetic action lie along specific vector lines. Vector fields are not subject to wave amplification, which is what I'm assuming you're thinking of. Magnetic field strength depends solely on the material used, when talking about permagnets, or amount of current/number of times the wire is wrapped around the ferromagnetic sample when talking about electromagnets. Also, magnetic and electric fields are subject to an inverse square law, meaning the force exerted diminishes inversely proportional to the square of the distance between the 2 vector fields. So a static force over 1 meter is 1 arbitrary unit of force, and if you double the distance the force gets reduced by 1/4. And I'm too tired to type anymore, I'll continue my post tomorrow.

[mr_penguin]

http://en.wikipedia.org/wiki/Maglev_train

This may be possible to do but very expensive. Make the hover board float on a track like a monorail train does, you won't have to worry about it flipping.

[JK-47]

http://en.wikipedia.org/wiki/Maglev_train

This may be possible to do but very expensive. Make the hover board float on a track like a monorail train does, you won't have to worry about it flipping.

Oh my hell, we've already said, the train has nothing to do with this. It's a different concept. The train is powered by magnets.

[azwethinkweiz]

The way I imagined this is if the board itself is an electromagnet with the polarity the opposite of the deck you are on (obviously), but it only being activated when both feet are on the board. Having this option of turning the continuity of the board on and off would prevent you from being flung off in dangerous directions by cutting off the current to the electromagnets and therefore you would have a slight element of control over where the board is taking you.

In conclusion, the board would have to have a power source of some kind and the deck would need it's own power source.

The more I think about this, the more I think it sounds like windsurfing meets bumper cars

[Kewlkyle64]

Maybe you should also try an engine on the board, to just give it a little push for that extra boost.

[Guest]

like i said earlier if it's downhill like snowboarding you do not need a propulsion system of any kind, although the only fault in my idea is theres not way to stop once you get to the bottom so you would need plenty of room to slow down and pads on top of the magnets would be es entail so in case you fall you land on something softer then metal.



hill with magnets
\
\\
\\\
\\\\
\\\\\
\\\\\\
\\\\\\\______________l
................................wall with mats

this idea gives room to slow down and incase you picked up speed you hit mats not a stone wall.

[Geo]

If it were easily achievable, do you not think it would have been done by now?

Give up.

[Guest]

I don't think he should give up he just needs some investors

if you can get it to work on a small scale with a tech deck (with your fingers on it for balancing) and if it works talk to some company's about investing so you can do a larger scale test and if that works talk to more investors to create a hover board park.

[Senor_Grunt]

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[Guest]

[quote="Senor_Grunt"][quote="

[-DeToX-]

Pokemon had a Magnet Train, so it must be possible >_>.


not rly. I don't see these plans working too much..

[jks]

Seriously, it's not possible. The only way to keep stable on the magnetic force is either to have the exact same force acting in all directions at the same time, or spin yourself at 10,000 RPM, either way, it's not practical.