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Author Topic: Tests on Ring Magnet SMOT - Not bad!  (Read 11692 times)

vineet_kiran

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Tests on Ring Magnet SMOT - Not bad!
« on: September 23, 2016, 04:34:44 AM »
Video showing tests on RM SMOT :


https://youtu.be/KP63gWe42zM


Can it be self looped?

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #1 on: September 23, 2016, 04:39:53 AM »
Forgot to post the picture.

gyulasun

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #2 on: September 23, 2016, 11:14:15 AM »
Video showing tests on RM SMOT :


https://youtu.be/KP63gWe42zM


Can it be self looped?

Hi vineet_kiran,

Thanks for showing this test.  Your question above can be answered only by further ingenious tests.

Sorry for intruding into your previous thread with those long posts (but I felt obliged to insist on facts).

Greetings
Gyula

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #3 on: September 23, 2016, 01:41:01 PM »
Hi vineet_kiran,

Thanks for showing this test.  Your question above can be answered only by further ingenious tests.



@Gyulasun

Thanks for the reply.   I will try to close the loop in a simple way.  First I have to search for materials in my junk bag!  Also thanks for the information provided in my other thread.

Regards,
VK
 




vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #4 on: September 28, 2016, 01:57:47 PM »
Video at :

https://youtu.be/BtGGMMNldoc

As you can see,  the ring magnet easily crosses the first sticky point.   I have provided extra magnets at the beginning of second array to pull the ring magnet out of last magnet of first array (sticky point) and not provided any ramp on the track.

The ring magnet moves forward just by its momentum and I think it is just a matter of keeping the attractive force in one direction.

I need some more magnets to complete the loop.  Takes some time.





DreamThinkBuild

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #5 on: September 30, 2016, 11:26:17 PM »
Hi Vineet_Kiran,

Your new video is interesting with it being able to make the corner. Attached is a half baked(untested) idea of putting the magnet inside of a larger wheel where the offset of the magnet changes the CoM and causes the outer wheel to become a flywheel.

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #6 on: October 01, 2016, 02:13:37 AM »
@Dreamthinkbuild,


Nice design but difficult to build for me.  I am trying to make a simple self looping SMOT.   I will post the video in a few days whether it works or not.

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #7 on: October 01, 2016, 02:52:08 PM »

Tried with circular loop - Failed!

https://youtu.be/sLYUImmgjtw


It does not work with circular loop, the magnet is kicking back! 

I think as webby1 said there is some mystery in the wild turn and I will try to change looping introducing wild angles instead of circular loop.

gyulasun

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #8 on: October 01, 2016, 03:27:33 PM »
Hi Vineet,

What if you built a slight slope for the last 10-15 cm of the (circular) track the end of which the ring could fall a little and may escape from the last magnet (and could enter again),  I mean the slope you indicated in the drawing in your 2nd post above and showed in an earlier video?

Gyula

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #9 on: October 01, 2016, 04:14:35 PM »
@Gyulasun,

Actually it is not properly built.   When slope on array is provided on long arc,   the starting point will be at very high elevation and ending point will be at very low elevation.    Hence magnet will experience negligible attractive force at the starting point.   Also the array in the middle  portion is bending downwards due to lack of support.   Which reduces the momentum of moving magnet.

I have dismantled it and making arrays in bits of shorter arcs.  This time I will test it introducing a ramp also.

Regards
VK

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #10 on: October 06, 2016, 02:00:10 AM »

It does not  work with ramp also!


https://youtu.be/jGD-pd1OP2U

Low-Q

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #11 on: October 06, 2016, 10:57:22 AM »
Tried with circular loop - Failed!

https://youtu.be/sLYUImmgjtw


It does not work with circular loop, the magnet is kicking back! 

I think as webby1 said there is some mystery in the wild turn and I will try to change looping introducing wild angles instead of circular loop.
When you think of it, the rolling magnet wants to approach the sticky spot at the end of the loop. That sticky spot is not going away when the magnet is suppose to continue beyond it. It's really that simple.
Without the sticky spot, the magnet would not approach it in the first place, but it does regardless of which way the rolling magnet is going. Because permanent magnets does not provide energy, this experiment and similar will fail every time.


Vidar
« Last Edit: October 06, 2016, 01:03:54 PM by Low-Q »

rstergar

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #12 on: October 06, 2016, 06:16:36 PM »
i tried something similar but no luck :)


i have some other ideas that might work but i must build it to test it... will post when i finish...

vineet_kiran

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #13 on: October 07, 2016, 02:49:36 AM »
i tried something similar but no luck :)


Nice build.   The gap between central slot and magnets at the beginning is far more than the gap at the end. (sticky point).  This happens when you make magnet array in a long arc.  If you make array in shorter bits you can reduce that gap difference.

Newton II

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Re: Tests on Ring Magnet SMOT - Not bad!
« Reply #14 on: October 09, 2016, 11:30:45 AM »

When you think of it, the rolling magnet wants to approach the sticky spot at the end of the loop. That sticky spot is not going away when the magnet is suppose to continue beyond it. It's really that simple.
Without the sticky spot, the magnet would not approach it in the first place, but it does regardless of which way the rolling magnet is going. Because permanent magnets does not provide energy, this experiment and similar will fail every time.


What happens if you release one more ring magnet on the track when the first magnet is already held up in sticky spot?  The second ring magnet moves towards sticky spot and kicks the first magnet out of sticky spot by repulsion which (first magnet)  again moves towards sticky spot on the track and kicks the latter from the sticky spot.

Will not this ass kicking go on for ever?