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View Full Version : Ala Peanut Butter Sandwiches - Levitation



Masa
10-20-2009, 08:48 PM
Saw this on one of the Ma.K forums. A member installed magnets into the underside of his model kit and it hovers above the base! Too cool!

http://www.gkjapan.com/gallery/files/8/nutrockerfloat.jpg

Using magnets and an electromagnetic field. The leds measure the postion of the magnets and the generator in the base calculates the strength of the magnetic field to keep the item afloat. Very nifty.

http://www.gkjapan.com/gallery/files/8/nutrockerfloatled_thumb.jpg (http://www.gkjapan.com/gallery/showimage.php?i=20&c=3&userid=8)

http://www.gkjapan.com/gallery/files/8/nutrockerbase_thumb.jpg (http://www.gkjapan.com/gallery/showimage.php?i=18&c=3&userid=8)

http://www.youtube.com/watch?v=3WcjXpaU4QY

Dr.H
10-20-2009, 09:00 PM
Very cool idea :P.

secretasianman
10-20-2009, 09:36 PM
I've seen magnets used for dry/breakaway assemblies and alternatives to piercing the surface but this is just too cool.

Kumama
10-20-2009, 10:05 PM
I wonder, does this method only work when you have a broad, flat subject like the ship, or could it be modified for a smaller point, like a figure? What a cool implementation! I'd love to know the inner workings of it so I can build one.

Tsunamidelta
10-20-2009, 11:40 PM
Have to agree, Awesome! I have a couple of kits something like this would be.. just right for.. but imagine it would be hard to get a proper field for a figure.. being.. We humans are top heavy anyways.. with our little legs below us. Would be hard to keep the figure from tipping. Unless you were to somehow build the base so it would be trapped in the X Y and Z axises.

Zakenna
10-21-2009, 04:14 AM
well what if the figure wasn't standing? what if it were already horizontal? would be pretty cool to use with something like a Strike Witches gk. or maybe do something with weights to balance out the figure.

edit:yeah I went looking around online and all the pre-made kits are designed for small stuff like 2 inch globes or pingpong balls. nothing to heavy although I saw one that held up a wrench but it took up an entire desk. But the ones I was looking at the electromagnet was above the suspended object not below so someone might have figured out how to have the field generated below to repel vertically. Simerlabs is the only maglev that I found that can support more than like 6 ounces of weight but they don't sell anything commercially yet but apparently they have a deal with Disney France to sell little floating princess bases in the near future and those maglevs are supposed to support up to 1kg

http://www.youtube.com/watch?v=DzQJlByFihk&feature=player_profilepage

I also found this, the levitron world stage. Usually it's sold with a globe but you can take the globe apart and use the magnet included to suspend your own objects, I haven't found the weight limit but from the vids it might be to weak for resin. it should hold up small Injection mold plastic models just fine though.
http://www.youtube.com/watch?v=CcZVLCpZN3k

Kumama
10-21-2009, 09:39 AM
The lights on that levitron world stage look similar to the one in the first post. Perhaps that's what is being used?

Dr.H
10-21-2009, 02:20 PM
I've seen a few different levitation novelty things around before. Probably all made in the same place in China and sold under different names. Either way a very neat use of them.

Heck if they can float and move bullet trains using magnets then why not use them for some cool kits lol.

Masa
10-21-2009, 08:53 PM
Like Zakenna mentioned - magnetic fields are frictionless and squishy, and that combined with always having to match polarities means there's no possible arrangement of static magnets that will hold an object in one place without it destabilizing. So the only way is to have an electromagnet rig that's continuously sensing little changes in the objects position, and adjusting power to the appropriate electromagnets to compensate (info from the Ma.K forum).

We already have small powerful magnets to put inside the model, we just need a large enough electromagnetic field to keep it afloat. Hopefully, the technology will improve to the point where we can support resin figures above an even smaller base unit :)

http://www.youtube.com/watch?v=nLxoNOkrnLs&feature=related

Dr.H
10-21-2009, 11:29 PM
Lol did that guy say he put Manics in the plane kit?? You would think that wouldn't work as well as Magnets with Manics being unstable as they are :p.

Tsunamidelta
10-22-2009, 10:34 AM
Yeah but Manics are far more entertaining to watch. Especially when shoved into a small space