Topic: Howard Johnason linear track accelerator video (Read 2797 times)

hartiberlin · « **on:** March 29, 2009, 11:15:29 AM »

Hi all,
I got a link from a friend, where you can download the Howard Johnson
Linear track accelerator video.

It is from 1994 showing Howard Johnson
with a waggon with 2 or more ? Banana magnets going through a magnetic gate
with no repelling force and 12 pound thrusting force ( Measured via a scale)
and then being accelerated out off the gate and crusing along for a few meters.

This is a very interesting video and in the recent success of Mylow´s setup it is
very desirable that everybody should see this.

Here is the download URL:

http://rapidshare.de/files/46408889/hj01.avi.html

You must first click on FREE
and then wait about a minute for the download counter and then can click the download
button.

Then a question comes up for the 3 digit code, that you must look at and enter into the form,
where it says:

Kein Premium-User. Bitte XXX hier eingeben: and you enter this 3 digit code.

Then it will download.

It is about 15 Mbytes big and uses the DIVX Codec and MP3 audio in it.

Enoy !
Regards, Stefan.

« **on:** March 29, 2009, 11:15:29 AM »

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JoinTheFun · « **Reply #1 on:** March 29, 2009, 11:36:53 AM »

Sound okay, interesting enough, but no image on my config.

Would love to see it.
"North attracting north"?

Edit : okay, missing codec, where can I find a reliable one. Does wmplugins have a solid reputation ?
Maybe someone can put it up on YT ?

hartiberlin · « **Reply #2 on:** March 29, 2009, 11:47:25 AM »

Download
www.divx.com
codec.

Enjoy !

Regards, Stefan.

hartiberlin · « **Reply #3 on:** March 29, 2009, 11:52:03 AM »

In a few minutes it will also be available at youtube:

http://www.youtube.com/watch?v=ndRrCZiM1CU

In this moment it is still working to convert it, so check this out later again.

Regards, Stefan.

« **Reply #3 on:** March 29, 2009, 11:52:03 AM »

JoinTheFun · « **Reply #4 on:** March 29, 2009, 12:09:23 PM »

Danke schön, Stefan

corona · « **Reply #5 on:** March 29, 2009, 12:26:12 PM »

That to me is a very non-convincing video. We never actually see the gate pull the cart in, it's always being held by HJ. When he's showing the scale that's apparently of it being pulled in, you never see that it's the cart on it's own pulling, he could be just pushing it.
And the rest of the video, he's always got his hand on the the cart until it's inside the gate, it never pulls itself in, ie it looked to me like a typical smot gate, where you get it past the sticky point by hand and then it thrusts out happily.
It actually looks in a few points that he slips as it moves towards gate and it jumps back towards him, like it takes quite a bit of force to get it in.

Andrew

« **Reply #5 on:** March 29, 2009, 12:26:12 PM »

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hartiberlin · « **Reply #6 on:** March 29, 2009, 12:40:20 PM »

Quote from: corona on March 29, 2009, 12:26:12 PM

, ie it looked to me like a typical smot gate, where you get it past the sticky point by hand and then it thrusts out happily.

Andrew, a SMOT does not have a sticky point at the entrance, cause you use a steel ball which is
always attracted into the SMOT gate.

Build yourself a SMOT then you will see it.

With Howard Johnson´s design this might be a bit different, as he uses magnets
on the runner waggon.
So it is a bit repelled,but not much, as you can see in this video but has a
pretty good velocity out of the gate.

So if he would put put a few gates after each other, the runner waggon could go on an on.

Although it would be much easier and cheaper to just use a few iron plates onto the track rail
and use only a few magnets inside the waggon to get crusing along as I have
an idea how to do this...

Regards, Stefan.

corona · « **Reply #7 on:** March 30, 2009, 12:54:55 AM »

Ah yeah of course, my bad, it's been years since I built a smot and I was mixing it up with the other magnet motors I've built. But I still stand by my earlier opinions, with regard to most magnet motor designs having a sticky spot being their only undoing. That video never shows to me the lack of sticky spot, it looks rather deceptive.
I'll continue with my myloo motor replication rather than look too closely at these older HJ videos, I don't really think he got very far with his linear designs.

Andrew

« **Reply #7 on:** March 30, 2009, 12:54:55 AM »

hansvonlieven · « **Reply #8 on:** March 30, 2009, 01:17:25 AM »

In Johnson's book The secret world of magnets he shows the construction of his gate. The drawings below are from his book.

1 shows the arrangement of the 4 ceramic bar magnets magnetised through the thickness.

2 shows a circular rubber magnet also magnetised through the thickness.

3 shows the completed assembly.

Howard claims that this arrangement accounts for its asymmetric behaviour. In the video he shows three such assemblies in line.

Hope this helps

Hans von Lieven

« **Reply #8 on:** March 30, 2009, 01:17:25 AM »

broli · « **Reply #9 on:** March 30, 2009, 01:54:29 AM »

Quote from: hansvonlieven on March 30, 2009, 01:17:25 AM

In Johnson's book The secret world of magnets he shows the construction of his gate. The drawings below are from his book.

1 shows the arrangement of the 4 ceramic bar magnets magnetised through the thickness.

2 shows a circular rubber magnet also magnetised through the thickness.

3 shows the completed assembly.

Howard claims that this arrangement accounts for its asymmetric behaviour. In the video he shows three such assemblies in line.

Hope this helps

Hans von Lieven

I made a 3d rendition of this setup to make things a bit more clear. I also believe that two opposing ring magnets can replace that pretty rare radially magnetized ring magnet.

« **Reply #9 on:** March 30, 2009, 01:54:29 AM »

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Author Topic: Howard Johnason linear track accelerator video (Read 2797 times)

hartiberlin

Howard Johnason linear track accelerator video

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Howard Johnason linear track accelerator video

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