SMOT - Speeding up a sphere in magnetic channel

An experiment on the topic of "free energy in the magnetic field"

Author: Mirko Pafundi, Asti, Italy

Online since: 18/02/2016, Number of visits: 350564

SMOT stands for Simple Magnetic Overunity Toy. A SMOT consists of two slanting magnetic rails with a track for a steel sphere in between. If the steel sphere is placed into the magnetic field at the bottom end it rolls along the track.

It is a very easy to replicate experiment that you can try with magnets of different sizes and strengths. If you don't use very strong magnets, this game is even suitable for older pupils (such as the first application in the video).

Part 1: Rolling magnetic rod

The arrangement of magnets - and therefore their polarity - is key for the success of the experiment. In the picture you can see how to position the magnets for the correct polarity. The two rows are not parallel but taper and build a channel. It is this special arrangement that allows the rod magnet to roll with the two steel spheres and increase its speed.

For the elements on the side I used rod magnets S-04-25-N and steel spheres ST-K-13-N. In the middle I used the same steel spheres and a pile of small disc magnets. I recommend, however, to use a long rod magnet, e.g. S-08-30-N instead of the small discs.

Part 2: Steel sphere in the magnetic channel

In the second SMOT example, I placed magnets on the left and right side of the steel sphere. Here it is necessary to use slightly stronger magnets. Attention: It definitely takes a channel of magnets to make the steel sphere go straight. Otherwise, it adheres to the nearby magnets.

I used metal profiles on the sides, on which I placed disc magnets S-20-03-N. (Attention: Children should only handle these magnets under adult supervision.)

Articles used

Steel balls Ø 12,7 mm

not magnets!, ferromagnetic, nickel-plated
To combine with neodymium magnets

	10 pcs.	0,45 EUR ea.*
from	40 pcs.	0,40 EUR ea.*
from	80 pcs.	0,38 EUR ea.*
from	160 pcs.	0,35 EUR ea.*
Ask for a rebate from 5 000 pcs.

Available: 21 510 pcs.

S-20-03-N

Disc magnet Ø 20 mm, height 3 mm, holds approx. 4,3 kg, neodymium, N45, nickel-plated

	5 pcs.	1,25 EUR ea.*
from	15 pcs.	1,09 EUR ea.*
from	40 pcs.	0,98 EUR ea.*
from	80 pcs.	0,92 EUR ea.*
Ask for a rebate from 550 pcs.

Available: 212 680 pcs.

S-04-25-N

Rod magnet Ø 4 mm, height 25 mm, holds approx. 670 g, neodymium, N42, nickel-plated

	5 pcs.	0,99 EUR ea.*
from	15 pcs.	0,86 EUR ea.*
from	40 pcs.	0,77 EUR ea.*
from	80 pcs.	0,71 EUR ea.*
Ask for a rebate from 600 pcs.

Available: 7 340 pcs.

S-08-30-N

Rod magnet Ø 8 mm, height 30 mm, holds approx. 2,7 kg, neodymium, N42, nickel-plated

	1 pc.	3,36 EUR ea.*
from	3 pcs.	2,92 EUR ea.*
from	10 pcs.	2,53 EUR ea.*
from	20 pcs.	2,34 EUR ea.*
from	40 pcs.	2,18 EUR ea.*
Ask for a rebate from 240 pcs.

Available: 6 pcs.

Steel balls Ø 8 mm

not magnets!, ferromagnetic, nickel-plated
To combine with neodymium magnets

	10 pcs.	0,36 EUR ea.*
from	40 pcs.	0,30 EUR ea.*
from	80 pcs.	0,28 EUR ea.*
from	160 pcs.	0,26 EUR ea.*
Ask for a rebate from 1 500 pcs.

Available: 6 300 pcs.

Steel balls Ø 10 mm

not magnets!, ferromagnetic, nickel-plated
To combine with neodymium magnets

	10 pcs.	0,35 EUR ea.*
from	40 pcs.	0,30 EUR ea.*
from	80 pcs.	0,28 EUR ea.*
from	160 pcs.	0,26 EUR ea.*
Ask for a rebate from 2 500 pcs.

Receive e-mail when item available again

Steel balls Ø 20 mm

not magnets!, ferromagnetic, nickel-plated
To combine with neodymium magnets

	10 pcs.	1,18 EUR ea.*
from	40 pcs.	0,99 EUR ea.*
from	80 pcs.	0,91 EUR ea.*
from	160 pcs.	0,84 EUR ea.*
Ask for a rebate from 550 pcs.

Available: 7 680 pcs.

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