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Author Topic: New accelerating lego magnet motor on youtube  (Read 54865 times)

Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #45 on: February 01, 2008, 05:18:46 AM »
Here is a new one I did with stator holders that aren't as high.  ;)

@ buggyirk

I just learned that a brick is 0.375" tall and a plate is 0.125" tall (Lego newbie).  The three stacked objects in the support appear to have identical heights.  If the objects were bricks, the internal height would be 1.125", which is way too high.  If the objects were plates, the internal height would be 0.375", which is more reasonable and would imply that at least one of the magnet dimensions is 0.375."

Currently considering magnet dimensions of 1.25 x 0.375 x 0.375 (32mm x 10mm x 10mm) or 1.25 x 0.625 x 0.375 (32mm x 16mm x 10mm).  I'll see what's available.

Cheers,

Yada ..
.

Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #46 on: February 01, 2008, 06:08:48 AM »
.
I'm looking for magnets that are roughly 32mm x 16mm x 10mm.  The magnets below are 40mm x 9mm x 9mm, but are very affordable and worth trying while I find something closer.  I'll have to move the stator magnet back 4mm, but there's room.

... and they are cheap ... 20 for ?4.95.  :)

(http://www.rapidonline.com/netalogue/photos/06058401.jpg)

... http://www.rapidonline.com/productinfo.aspx?kw=magnet&tier1=Educational+Products&tier2=Science&tier3=Magnets&tier4=Ferrite+block+magnets&moduleno=72027


Yada ..
.

v71

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Re: New accelerating lego magnet motor on youtube
« Reply #47 on: February 01, 2008, 03:13:01 PM »
Normally i follow silently this threads about permanet magnet motors, but i have to say this,I just talked with the author , this motor is a fake .There is no motor under the table, but the short movie is played backwards.
I am more and more convinced about the fact that you can't extract energy from magnets, even the oc motor is a another soap ball


buggyirk

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Re: New accelerating lego magnet motor on youtube
« Reply #48 on: February 01, 2008, 06:23:52 PM »
oops double post! >:(

buggyirk

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Re: New accelerating lego magnet motor on youtube
« Reply #49 on: February 01, 2008, 06:34:13 PM »
Here is a new one I did with stator holders that aren't as high.  ;)

@ buggyirk

I just learned that a brick is 0.375" tall and a plate is 0.125" tall (Lego newbie).  The three stacked objects in the support appear to have identical heights.  If the objects were bricks, the internal height would be 1.125", which is way too high.  If the objects were plates, the internal height would be 0.375", which is more reasonable and would imply that at least one of the magnet dimensions is 0.375."

Currently considering magnet dimensions of 1.25 x 0.375 x 0.375 (32mm x 10mm x 10mm) or 1.25 x 0.625 x 0.375 (32mm x 16mm x 10mm).  I'll see what's available.

Cheers,

Yada ..
.

I am glad to see you are trying so hard to get the proper magnet measurements. Yes, the stator holders still look like they are three blocks tall. The reason for this is that the program has no definition for individual pieces. So when three flat pieces of the same color are stacked, it gives the illusion that they are one block. I have edited the design again and made it more easy to tell what peices are being used. I guess I got stuck on trying to make it accually look like the original design instead of making it for ease of replication.  :P


@v71

Thank you for you comment, but without any proof, and this being your first post, I don't really believe you. I am not trying to be mean, but you are the first person to accually be able to contact the original builder. Please elaborate.

hanglow

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Re: New accelerating lego magnet motor on youtube
« Reply #50 on: February 01, 2008, 07:18:54 PM »
I will dig up the videos and post them when I get a chane. First of all You don't want to use pully's. Reason being you may not get exact revelutions with the force of the magnet. You have room for the belt to slide. In my first design I used a rubber band which does not work good at all because it stretches  and with the magnet force it won't turn correctly. So my second design was with a plastic gears. That works better but It wasn't perfect as I didn't have a cnc machine. It's probably just best I post the video so you can see what I am saying. 

Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #51 on: February 01, 2008, 08:16:11 PM »
I will dig up the videos and post them when I get a chane. First of all You don't want to use pully's. Reason being you may not get exact revelutions with the force of the magnet. You have room for the belt to slide. In my first design I used a rubber band which does not work good at all because it stretches  and with the magnet force it won't turn correctly. So my second design was with a plastic gears. That works better but It wasn't perfect as I didn't have a cnc machine. It's probably just best I post the video so you can see what I am saying. 


@ hanglow,

Turbo just announced that he got sustained rotation on a WhipMag device, but accomplished this by placing rod magnets on top of the stators, which stopped them from rotating, but allowed them to oscillate.  This resulted in a sustained rotor rotation of 300 RPM.

...  http://www.overunity.com/index.php/topic,3871.msg74663.html#msg74663

Implications:  Turbo's device is starting to look like a hybrid of the Lego device and the WhipMag, and because the oscillation phenomenon might be very important if not critical, I think the loose coupling afforded by a rubber band might be important to the Lego device.  In my mind's eye, I can see the elasticity of the band allowing the rotor mag to oscillate [hunt?] slightly as it passes by the fixed stator mag. 

Comment  ???

Cheers,

Yada ..
.

Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #52 on: February 01, 2008, 08:30:35 PM »
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@ buggyirk

In your latest drawing I count two sets of six stacked objects in the stator support.  Given that the Lego plate is the shortest Lego object and is 1/8" tall, this would imply that the internal height is 6/8 (i.e. 3/4).

The video shows only three stacked objects (presumably 3/8").  Could you please clarify?

If it's a "CAD-rendering-thing" perhaps you could make each of the three stacked objects a different color (red/green/blue).

The video is poor -- believe me I know -- and we will issue purple hearts when this is done.  ;D

Cheers,

Yada ..
.

buggyirk

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Re: New accelerating lego magnet motor on youtube
« Reply #53 on: February 01, 2008, 09:05:23 PM »
.
@ buggyirk

In your latest drawing I count two sets of six stacked objects in the stator support.  Given that the Lego plate is the shortest Lego object and is 1/8" tall, this would imply that the internal height is 6/8 (i.e. 3/4).

The video shows only three stacked objects (presumably 3/8").  Could you please clarify?

If it's a "CAD-rendering-thing" perhaps you could make each of the three stacked objects a different color (red/green/blue).

The video is poor -- believe me I know -- and we will issue purple hearts when this is done.  ;D

Cheers,

Yada ..
.


Lego has two types of basic blocks. The thick block and the thin block. Three thin blocks equals one thick block.  In the first version I made, I made it with the thick blocks. But based on your observations and my own, the stator holders seemed too tall. So I decided that maybe the design in the video just used two columns of six thin blocks instead of two columns of three thick blocks. This was the second version I did, but you could not tell that the thin blocks where seperate pieces because of the way the software is. And unfortunatly, the same goes for the crappy video. So, I made the third version to show you the accual seperate pieces in the columns. I have attached a picture of the blocks I am talking about. Feel free to ask more questions. I am here to help. ;D

v71

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Re: New accelerating lego magnet motor on youtube
« Reply #54 on: February 01, 2008, 09:09:45 PM »
Simple, i am the autor  ;D.
I just thought it was enough like that.

Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #55 on: February 01, 2008, 09:33:39 PM »
@ buggyirk

I got it!  Thanks.

I'm still trying -- like you -- to determine the internal height.  I get 3/8", and you get 6/8"

   Q1:  What do you think the video shows?  (I think it shows 3 short blocks.  You?)

   Q2:  Could you change the perspective on your drawing so that the angle and lighting are similar to the first few seconds in the vid, when the device is just starting, making it easier to obtain dimensions?

Mucho gracias.   :)

You'll agree that the skewing of the video makes it a challenge to get accurate dimensions.  In the foreground the rotor magnet length might measure 200 pixels, but in the background the same feature measures only 150 pixels.  Copy?  Because of the different resolutions (pixels/inch) I have to use different rulers -- and compensate for height skewing as well.  5/16 stud centers help, but even the studs are not clear and appear mostly as blurs.  It's a challenge, but very doable.

Cheers,

Yada ..
.


Yadaraf

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Re: New accelerating lego magnet motor on youtube
« Reply #56 on: February 01, 2008, 09:43:12 PM »
Simple, i am the autor  ;D.
I just thought it was enough like that.


@ v71

I wonder if you would be kind enough to make another video of your Lego device, but include your hands and a voice track in the video as you start and stop the device.  In addition, if you could include a video from beneath the table, that would be great.

This shouldn't take long and would answer a lot of questions -- allowing us to get on with other things.  ;)

Many thanks.

Yada ..
.

buggyirk

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Re: New accelerating lego magnet motor on youtube
« Reply #57 on: February 01, 2008, 10:26:44 PM »
another double post. sorry :-[

buggyirk

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Re: New accelerating lego magnet motor on youtube
« Reply #58 on: February 01, 2008, 10:27:58 PM »
@ buggyirk

I got it!  Thanks.

I'm still trying -- like you -- to determine the internal height.  I get 3/8", and you get 6/8"

   Q1:  What do you think the video shows?  (I think it shows 3 short blocks.  You?)

   Q2:  Could you change the perspective on your drawing so that the angle and lighting are similar to the first few seconds in the vid, when the device is just starting, making it easier to obtain dimensions?

Mucho gracias.   :)

You'll agree that the skewing of the video makes it a challenge to get accurate dimensions.  In the foreground the rotor magnet length might measure 200 pixels, but in the background the same feature measures only 150 pixels.  Copy?  Because of the different resolutions (pixels/inch) I have to use different rulers -- and compensate for height skewing as well.  5/16 stud centers help, but even the studs are not clear and appear mostly as blurs.  It's a challenge, but very doable.

Cheers,

Yada ..
.



In referance to Q2, if you want to , I have posted the accual lxf file in a rar archive in my last post. It is for the free lego digital designer program found here < http://ldd.lego.com/ > Then you can put either piece at whatever perspective you want. I don't really have the time to dop it myself right now.


edited- me = bat :-[
« Last Edit: February 01, 2008, 11:03:37 PM by buggyirk »

Omnibus

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Re: New accelerating lego magnet motor on youtube
« Reply #59 on: February 01, 2008, 10:37:47 PM »
@Yadaraf,

I don?t think we should be polite towards intruders such as @v71. Recall there was a similar intruder in @xpenzif?s thread who appeared as ?@xpenzif  .? with a dot, claiming he was the one who did the experiment and the experiment was fake. These clowns should be confronted at once and if they don?t produce convincing evidence for what they are claiming but continue to annoy the forum they should be told things one normally doesn?t want to hear, unless Stefan wants to ban them.