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Author Topic: Magnet motor in Argentina  (Read 225338 times)

Omnibus

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Re: Magnet motor in Argentina
« Reply #480 on: April 08, 2006, 04:56:23 AM »
OK, I gather you mean your simple_magnet_motor_drawing.jpg. As far as I understand you?re replicating the bevel variant with the wheel attached to the rotor. The motor cap, as far as I can see, allows faster lifting of the stator magnet than its descending. I kind of agree with that. Shouldn?t you have more than 4 stator magnets, though? It?s interesting to make a FEMM simulation with your four-stator scheme to see if it?d have enough torque.

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #481 on: April 08, 2006, 04:59:23 AM »
no sorry i only put four as an example... i have eight on my device (look at the pic again, see the "hooks" where the other four would be :) ) sorry

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #482 on: April 08, 2006, 05:01:01 AM »
sorry to post off topic but could somebody tell me what file to download to do femm sims hartiberlin posted a download link but i can't figure out wich file it is that i need. :)

Omnibus

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Re: Magnet motor in Argentina
« Reply #483 on: April 08, 2006, 05:05:08 AM »
Thanks, tao, Now I get ?7.35571 N m which is pretty close to the previous value. Is this the value that you get?

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #484 on: April 08, 2006, 05:08:11 AM »
i used a flat piece of alum sheet cut to match my magnet and glued the magnet to it then curled the hinged end around and ran a good stif wire through it for now. it moves up and down freely and was simple to make :)

Nastrand2000

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Re: Magnet motor in Argentina
« Reply #485 on: April 08, 2006, 05:09:21 AM »
Alluminum is very easy to drill......just make sure it is at least 1/2 inch away from the spinning rotor magnets

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #486 on: April 08, 2006, 05:12:19 AM »
the beauty of this device tao is you dont have to be a machinist to make it! the end model would have to done pro but not the beginning models. use a vice, hammer and blow torch to make the bends you need and a good stiff peice of metal. i used wood as a base and hardrive disk as rotor even kept the motor on it as the bearing and just screwed it down to the wood. used glue to fasten the magnets down and was mostly done. (dont use the glue though it sucks if you make a mistake in placement on the rotor!) :) i hope this helps you save a little money and effort. :)

Omnibus

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Re: Magnet motor in Argentina
« Reply #487 on: April 08, 2006, 05:14:32 AM »
danny, the link is http://femm.foster-miller.net/index.html . Go to ?Executable Distributions? and download femm401bin.exe. The program is femm.exe.

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #488 on: April 08, 2006, 05:15:35 AM »
distance from rotor should depend on power of magnets :) mine for instance have to be right at half an inch just to react to each other :)

(boy i need better magnets) (for those of you who havent noticed i have no income and live on welfare untill dissability comes in or i go to school, both of which are pretty far off so no i don't have money to do most things! lucky me im creative and find ways around it :) )

thanks

 danny

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #489 on: April 08, 2006, 05:18:35 AM »
tao ol buddy ol pal ol buddy if you keep on tweeking this things gonna need titanium pins to hold it together! :) good work but im gonna work on a prototype before any tweeking  ;) . just make sure you publish all your findings before your computer explodes from all your rendering and figures. :) so the rest of us can tweek later :)

Omnibus

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Re: Magnet motor in Argentina
« Reply #490 on: April 08, 2006, 05:18:42 AM »
danny, can't you use that double-sided sticky tape from RadioShack to attach the magnets to the rotor so that you can readjust them if you make a mistake?

Omnibus

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Re: Magnet motor in Argentina
« Reply #491 on: April 08, 2006, 05:22:04 AM »
tao, these torques are really amazing. I hope this is confirmed in practice. I'd be glad, like danny says, to see it first just turning.

tjanzer

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Re: Magnet motor in Argentina
« Reply #492 on: April 08, 2006, 05:23:57 AM »
Tao,

Aluminium is very easy to work with. That is what I am using for my design. I use a wood band saw to cut 3/8" plate. Just have to cut slow. It is also easy to drill and tap. I think you should try to find a local machine shop in your area. They will have tons of scrap pieces that may be usefull. They might even give it to you. Small pieces are pretty useless to them.


Nastrand2000,

I am a little concerned about your statment about keeping it at least 1/2" from rotor mags. Why is this?

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #493 on: April 08, 2006, 05:29:29 AM »
omnibus - sticky tape would cost at least two dollars! which puts it oh.... about one dollar and ninetyseven cents out of my reach :) (the sad thing is im not joking!)

seriously though i don't think sticky tape would hold :) its cool though tommorow ill unglue the magnets and get back to work :) thanks though

danny

Nastrand2000

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Re: Magnet motor in Argentina
« Reply #494 on: April 08, 2006, 05:34:30 AM »
@tjanzer,

eddy currents created within the aluminum will significantly reduce to the rotational aspects of the motor....not to say that it will stop the motor, just that it can reduce a motors rpm expodentially.