Magnet motor in Argentina

[hartiberlin]

Here is the second one.

[hartiberlin]

Here are the video files as GIF animations
so every browser can see them !



and

[silverdragonrs]

ok my first replication failed!

warning remember to create a prototype that you can adjust! don't use glue to hold your elevating arms or rotor magnets down. create a system for adjustment on each.

my problem is not the design but in the manufacturing. as follows:

I placed my elevating arms to far from the rotor and got no reaction from the rotor
i placed the rotor magnets to close to the "weel arm?" (<---- needs a name)

a track drilled through the rotor (in this case i used a hard drive disk) to allow the magnet to be attached and adjusted would have helped. simply attach a bead of epoxy to the bottom of the magnet trim to fit in track and dril small hole in epoxy. use a screw (into the epoxy hole) and tighten down to disk.

same for the arms. drill track into base so that a screw from the bottom into the elevating arm can tighten and loosen the arm allowing adjustment.

i strongly recomend this in all your prototypes! i will have to break my magnets free now and start all over! do not get to hasty as i did, this is how mistakes are made duh! .

thanks
danny

[silverdragonrs]

great job tao and hartiberlin ! those are great animations. thank you! I am working on a presentation wich i will pass through a few of you. this presentation will be simple instructions of how, why, and what, as well as how to with this device. i will be leaving it in simple terms for those of us who went to the local technical callage instead of harvard! i will leave the figures and numbers for the rest of you to present . I am saying this because i will be using all these graphics in my presentation. if you have any objection to this please let me know so i can abbide by your wishes. I am not one to steal ones hard work! thanks

danny

[Omnibus]

Thanks, Stefan. That?s really great. Of course, thanks again, tao.

Now on more practical side, how exactly did you calculate the torque with the FEMM? How do you choose the contour to integrate? Take, for instance, tao?s schematic magmotor18.ans. What I do is first choose to operate on segments and then click clockwise on the four nodes of the rotor. Thus, I obtain ?7.51314 N m, for the torque from the stress tensor. Is this the value you get as well?