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Author Topic: Magnet motor in Argentina  (Read 225391 times)

Cisco

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Re: Magnet motor in Argentina
« Reply #330 on: April 02, 2006, 11:53:01 PM »
I think my design in Reply #305 is simpler, only one wheel on each stator piece to do the lifting and down puch
no wheel on the rotor no bevel on each stator piece only a up ramp a down ramp and hold down on the rotor (motor) cap.

?Tommy,

   Sorry, my previous response fired off prematurely.
I like your design, but there's only one part of it that troubles me: Every time the wheel traverses
from the rotor holddown to the upramp, and again from the upramp to the downramp, the wheel
is instantaeously obliged to reverse ITS direction of rotation. This effect will certainly act as a
brake to the whole motor, analogous to turbine RETROjets utilized in commercial jet aircraft immediately after
touchdown which contribute to deceleration.
 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

_GonZo_

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Re: Magnet motor in Argentina
« Reply #331 on: April 03, 2006, 12:20:19 AM »
Every time the wheel traverses
from the rotor holddown to the upramp, and again from the upramp to the downramp, the wheel
is instantaeously obliged to reverse ITS direction of rotation. This effect will certainly act as a
brake to the whole motor?


Sooner or later you will discover that the force of that brake is exactily the same as the torque force created by repulsion of the magnets over the rotor...

Omnibus

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Re: Magnet motor in Argentina
« Reply #332 on: April 03, 2006, 01:05:50 AM »
Quote
Quote
Every time the wheel traverses
from the rotor holddown to the upramp, and again from the upramp to the downramp, the wheel
is instantaeously obliged to reverse ITS direction of rotation. This effect will certainly act as a
brake to the whole motor


Sooner or later you will discover that the force of that brake is exactily the same as the torque force created by repulsion of the magnets over the rotor...

I don?t think this is such a big problem. With a proper adjustment this ?brake? can be avoided, never mind the change of rotation direction. Nevertheless, it seems simpler to return to Torbay?s original idea. The beveling there is on the material (bronze, I guess) in which stator magnets are inlayed, not on the magnets themselves, so it won?t be difficult to make. Attachment of small wheels (bearings) on top of stator magnet levers as well as the big wheel attached to the rotor shouldn?t be a problem too. The motor cap, attached to the rotor, can only be a partial annulus with a slanting section (thus rotor won?t be too heavy, although otherwise it may act as a flywheel ? asymmetric, though) and that doesn?t seem to be too difficult to make too. Probably it?s time to get to the concrete dimensions. Anyone with CAD/CAM and skills to use it?

macelyne

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Re: Magnet motor in Argentina
« Reply #333 on: April 03, 2006, 01:26:48 AM »
Why not lifting the stator magnets with a little repelling magnet ?

( below the stator magnets )

Omnibus

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Re: Magnet motor in Argentina
« Reply #334 on: April 03, 2006, 01:33:03 AM »
Quote
Why not lifting the stator magnets with a little repelling magnet ?

( below the stator magnets )

Won?t it repel also the three rotor magnets and this is exactly what we wanna avoid?

macelyne

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Re: Magnet motor in Argentina
« Reply #335 on: April 03, 2006, 01:44:33 AM »
No it wouldn't because the repelling magnet
would be fixed with the rotor,
and always littlebit ahaed of the rotors magnet.
( forgot to mention it )

Omnibus

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Re: Magnet motor in Argentina
« Reply #336 on: April 03, 2006, 01:51:03 AM »
Sure, that's obvious. And, yet, this is an unwanted contribution. I don't think anything can beat a precisely positioned mechanical system.

jaybird

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Re: Magnet motor in Argentina
« Reply #337 on: April 03, 2006, 02:06:41 AM »
Hi everyone, I'm back for a day or so,...so I'll have time now to look over everyones ideas...and add afew drawings I am working on also....I bought SketchUp 3D (which I am learning well) and will try to do some parts on it as precise as possible (also use XaraX and Macromedia products, but with Sketchup and eMachineshop I can do detailed drawings)

  Look for some ideas over the next 12-24 hours and let me know what you think.

Jay

Omnibus

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Re: Magnet motor in Argentina
« Reply #338 on: April 03, 2006, 03:45:27 AM »
jaybird, thanks very much for mentioning eMachineshop. Let?s try to come up with a design we would agree upon using this software and then we can order the details online. I think this is a great solution for the project.

To start, I suggest the diameter of the rotor to be 9.5cm which seems to be standard for HD's.

silverdragonrs

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Re: Magnet motor in Argentina
« Reply #339 on: April 03, 2006, 04:25:45 AM »
(sorry to post off topic)

i am really wanting to join in on topics such as this but you people are so far beyond me its not funny... could anyone recomend a way for a newby to these things some way to "catch up" a good conprehendable book to bring me up to speed? i am afraid i am to far behind to catch up this way but i will attempt anyhow. thanks

danny

dutchy1966

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Re: Magnet motor in Argentina
« Reply #340 on: April 03, 2006, 08:46:26 AM »
(sorry to post off topic)

i am really wanting to join in on topics such as this but you people are so far beyond me its not funny... could anyone recomend a way for a newby to these things some way to "catch up" a good conprehendable book to bring me up to speed? i am afraid i am to far behind to catch up this way but i will attempt anyhow. thanks

danny

Hi Danny,

First off all I think everyone is welcome to join. I suggest if you haven't already done so to read this topic from beginning to end and have a good look at all the pictures and ecplanations given. That way you might get up to standards really quick. If things are still unclear about what we're trying to achieve just ask. The who;e idea is to make this a common project...

Dutchy

dutchy1966

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Re: Magnet motor in Argentina
« Reply #341 on: April 03, 2006, 09:23:02 AM »
Let me mention also about the HD which I prefer before the CD 'cause it's sturdier. My HD has aluminum casting which is very hard to do anything with and is surrounding the disc - disc is simehow dipped in this aluminum shell. Anybody with exerience with these HD's? Probably we should agree on a certain diameter of the HD disc as well.

Should be able to get the whole engine and platters out of the casing. I think just go for the 3.5 inch HD. Thats a standard size. Everyone agreed on that?

jaybird

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Re: Magnet motor in Argentina
« Reply #342 on: April 03, 2006, 04:13:27 PM »
Hey guys, I think we may be putting the wagon in front of the horses...

We may need to find the MAGNETS (size and shape) we need first, THEN design the sizes accordingly. I am looking now.


Also, we may want to design the first out of soft wood, even balsa...so that it can be worked easily, and parts can even be cut without expensive tools (even hand tools)...when we get a design that works (or close) we can progress to a metal design.
Jay

dutchy1966

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Re: Magnet motor in Argentina
« Reply #343 on: April 03, 2006, 04:43:08 PM »
Hey guys, I think we may be putting the wagon in front of the horses...

We may need to find the MAGNETS (size and shape) we need first, THEN design the sizes accordingly. I am looking now.


Also, we may want to design the first out of soft wood, even balsa...so that it can be worked easily, and parts can even be cut without expensive tools (even hand tools)...when we get a design that works (or close) we can progress to a metal design.
Jay

Hi Jay,

You could be right here. Once we've created one stator segment we know how big it is and we can work out the diameter of the circle they sit along (in case of 16 stator segments: (16 * width of one segment / Pi   Right??) From there we can also derive the size of the rotor (little bit smaller then the inner circle of the stator).
I'm not sure about the balsa wood. Isn't it better to start with a readily available U frame (aluminium) ?

Dutchy   

jaybird

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Re: Magnet motor in Argentina
« Reply #344 on: April 03, 2006, 04:56:12 PM »
Quote
dutchy1966: I'm not sure about the balsa wood. Isn't it better to start with a readily available U frame (aluminium) ?

? That would be pretty simple to work with also... the only thing is that we may have to purchase an entire stock length, which is the case around here (unless you have a metal shop willing to sell cut-length). The metal shops close to me only carry a small line of aluminum, usually square tubing and rod, but I will look for some I-beam and channel today...

Jay :)

EDIT:

   These magnets are interesting, but may be too small of diameter (43mm OD)...but it is possible...Part # M5005

    (Link to page of others):http://www.engconcepts.net/List_Of_Motor_Magnets.asp