The Takahashi motor.

[CyanGrinMonk]

Hello,

i'm planning a version of this motor :

The Tom Bearden Website

If anyone has gone this route before it would be great to hear what your experiences were.

I don't plan on using angled magnets, just the difference in attraction between both ends of the rotor magnet to induce rotation.

I also plan on using at least two rotor magnet assemblies, experimentation will reveal the limits.

I bought a cheap Chinese laser cutter that i'll use to cut the parts after ive upgraded a few things on the cutter.


Cyan.

[CyanGrinMonk]

Here's the rotor design, slots for 48 magnets so that different combinations can be tried.

The stator is also there but may not take the form of an acrylic sheet, i may use a flexible strip to mount the stator magnets on, but this design shows the line of the stator.

The rotor is 200mm in diameter, magnets are 10x2x20mm Neo, shaft is 6mm aluminium.

Since the magnets are 20mm long i will have an open rotor, rather than having the weight of a 20mm thick acrylic disc slowing it down, the air resistance on the magnets will have less of a negative impact than a kilo of plastic.


Cyan.

[Aaron]

YT magnets

They had those special magnets that are unavailable now. They were way stronger than the neo magnets. Were supposed to be manufactured but that go squashed big time.

The only time they were offered to the public was a magnet the size about 1x1 inch and maybe as thick as a refrigerator magnet. You stick it on the outside of a cell phone and when it charges up, it will last 2 times longer than normal just by adding the magnet.

It was called Battery Doubler as far as I remember and I had a chance to buy some but didn't!

They disappeared pretty quick. Those magnets are described here: http://www.cheniere.org/images/takahashi%20article.jpg

You're using neos and I'm not sure how crucial those YT magnets were to the operation but they seemed to take things to a whole other level.

[CyanGrinMonk]

Thanks Aaron, i read that article and assumed that YT magnets are Neo magnets, for the following reasons :

1. The accidental ingredient dropped in the compound was Neodymium.
2. The news report is from 1995 and says that the magnetic compound was discovered 'a few years ago', Neodymium was discovered in 1982.
3. Neodymium-compound discovered by workers at Sumitomo, which later became part of Hitachi.

But after that small amount of detective work i realised the claimed MgOe of his YT magnet was approaching 120, so detective work down the drain!

I know this won't perform like the original, but it'll demonstrate the principle of magnets being the prime mover, i hope.


Thanks,

Cyan.

[CyanGrinMonk]

Some interesting comments on the YT magnet in this short article :

http://www.magneticmicrosphere.com/T...t%20Magnet.pdf

Best,

Cyan.

[CyanGrinMonk]

Useful doc :

http://goo.gl/Ma9KtM


Best,

Cyan.

[CyanGrinMonk]

Stator.

I've ordered some 0.25mm plastic sheeting.

I'm hoping it will be flexible enough to form the stator line, i'll then cut two plates for top and bottom with grooves for the stator sheet to slot into.

This way i can easily try different spirals for the stator just by cutting new guide plates.

The stator sheet will be between the stator and rotor magnets, hopefully it's thick enough to resist the attraction without cracking.

I'll use an inductive switch (a-la Adams, Bedini etc) to pulse the rotor magnets at the spiral's end, and see how it does with the natural duty cycle these switches result in, i've found they are often better than LDRs or optical switching, depending on the context.


Have a good weekend (and belated happy Thanksgiving to the US folks),

Cyan

[wrtner]

Try googling:
"paul sprain" takahashi

Directory:Harry Paul Sprain magnet motor - PESWiki

paul sprain = another victim of the money

You'll get some better ideas from Patrick:
http://www.free-energy-info.com/Chapter16.pdf
.

[CyanGrinMonk]

Try googling:
"paul sprain" takahashi

Directory:Harry Paul Sprain magnet motor - PESWiki

paul sprain = another victim of the money

You'll get some better ideas from Patrick:
http://www.free-energy-info.com/Chapter16.pdf
.

Thanks Wrtnr, i've been looking into it for a while and read the Sprain info with interest.

Sprain's was quite large and slow, i'd like to find out how much speed and torque we can get from a small device.

I plan to video testing of the sticky spot at 60FPS under magnetic field paper (so-called) to observe the behaviour of the device closely while its in motion, both powered and unpowered.

There's lots of good info on this site too :

http://www.energeticforum.com/renewa...kel-motor.html


Thanks,

Cyan.

[CyanGrinMonk]

Cutter upgrades.

I've removed the old bed and the (rusty!) support poles are nearly all out.
Will be replacing with honeycomb bed for better airflow and heat management.
Have added air-assist and red-dot sight.
Have removed the extractor ducting and will adapt to a better system.
Hope to complete laser upgrades within a couple of weeks.
Pics here :

Postimage.org / gallery - board, ducting, frame, gear, psu and board, stepper connecter


Thanks,

Cyan.

[CyanGrinMonk]

Honeycomb bed arrived along with some new mirrors.

I've spent years exploring alternative energy when i was unemployed, now that i'm working again i'm really looking forward to cutting my own perspex and having a machine roll my coils as well, no more hand or drill-winding !

I'm mostly an electronics novice, been exploring off-and-on since '95 but haven't advanced very much due to life getting in the way of life ;+}

The 0.25mm perspex that i'd planned to mount the stator magnets on arrived and was FAR too bendy, we all know what Neos are like in close proximity!

I'm thinking now that 1mm may do.

Of course it's Christmas now so life gets even more in the way of life, so i hope to have a new extraction system in January, and hopefully be cutting by February.

It's a simple system, on the surface, and we can measure and simulate all we like but the truth is in the building, you ahve to see how the machine reacts.

I'm a bit concerned about how the spiral stator diminishes in radius, i'm hopin that starting close and ending VERY close is a good idea, since magnets don't operate how masses do gravitationally, it's much more than the inverse square.

But then you have to think of what causes a setup like this to run in the first place, everything is a gradient. For this to work we need a magnetic attraction gradient that maximises rotation through all 360 degrees, and that may be the same gradient that maximises the average torque through over 50% of the rotation, i'm not proficient enough in maths or engineering to know if that's how it works.


All the best,

Cyan.

[CyanGrinMonk]

Forgot pic of honeycomb bed, i hope there's some nerds reading this thread !