We all know that motors create a magnetic field around its coil to run ... But this motor doesn't rely on the magnetic field ... Instead, it works thermally.
The idea of this motor is that it needs a low voltage (V) high current (A) transformer to work ( spin ) depending on the high resistance of the inner and outer shells of the bearing, And that surely creates an extremely high heat that makes the ball of the bearing ( which is in contact with the heated section ) expand ... If the bearing wasn't moving in the first place you'll end melting the bearings or totally destroying them ( The ball might expand alot and crack the bearing or seize it ), But if you gave it a spin then the bearing ( because of the heat and expanding ) will stay in a rotary motion in the same direction of your main spin.
This motor can reach very very high speeds but unfortunately it has no useful use ( just for fun ) because of the fact that it can't run forever And the heat builds up gradually till the destruction point of your motor .....
But after all it's a good project to have laying around for a person like me ( it feels good when i make things like so ), So if you want to build one yourself all you're gonna' need is :
(First take some precautions 1- Don't run it in near any flammable substance 2- Don't touch it after the run immediately as it will be RED HOT ! 3- Eye protection is always important 4- Get yourself an extinguisher incase anything goes wrong)
- x2 Ball bearings ( size isn't important just try to find a conductive ( metal ) shaft that fits in the inner ring of the bearings )
- x1 Metal shaft
- x1 High amp transformer (10 amps one will do the trick )
- x2 Copper or any conductor strips
- Your imagination !
There's no specific way to build such a motor, Everyone has his own style and imagination, You got the main parts And now it's your turn to make the base ... Any base would do it even a wooden one.
After making the base and setting your bearings in place, Secure it with the Copper strips as they hold the bearings in place and act as a bridge for current to travel to your bearings ( through the shaft ofcourse ).
Now you're done, Solder 2 wires to your copper strips and connect them to your transformer and DON'T forget to spin it ! And don't leave it working too long to prevent any damage !
Anonymous