Posted: 03:09am 17 Sep 2005

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Hi All,

I have just got back from holidays up north, where i met up with Bruce. He brought some Neos of me for two rotors and we did the conversion, as Bruce was aware the placement of the magnets can be tricky. Once resined in place the rotor is very strong.

He informed me of his tests with the new Neo rotor and he was very impressed, as i thought he would be, 800 watts+.

I would say about three times the power or more. Cogging is a little more, but you need a larger blade diametre to drive the Neo rotor as it puts out much more power, this also helps to get it started as larger blades will give more starting power.

I recommend at least a 2.4M blade diametre.

Anyone interested in the Neo rotors can either buy the magnets from me for around $80 a set, or buy a completed changeover rotor for around $200, which i recomend as the conversion can be easy to stuff up, (you have to supply me with a good magnet rotor). I use 4 smaller magnets to make up 1 north or south magnet. A total of 224  Neo magnets are used. I reason I do this is that I can get the magnets cheap. Each magnet is 19mm/9mm/3mm.

Will post some photos soon.

Matt Lyons, (03) 93879601 or matlyons@yahoo.com.au

Posted: 05:44am 19 Sep 2005

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Hey Matt

Good to see your back.

Do you have any figures for that new hub at slow speed. I've been playing around with VAWTs and this new hub might work well as direct drive. The VAWT's have enough torque to start a cogged F&P, but would only spin at about 100 rpm. It might even start a stator that hasn't been decogged, along with one of your hubs with the magnets mounted straight.

Glenn

Posted: 05:20am 20 Sep 2005

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Reply to Glen,

The cut in speed will be half of that of a normal magnet rotor, or even less, i will be doing some basic tests this week with the neo rotors and get back to you with some specs.

Matt Lyons.

Posted: 01:11am 26 Sep 2005

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Hi Chris,

The earlier ones i made used 12mm wide magnets which were too powerfull and yes tended to warp the rotor.

The new design uses 8mm wide magnets at 6mm deep and 36mm long which has less pull on the rotor. And plenty of power.

The one i have been testing so far is fine, but i am still looking into ways of strengthening the rotor or as other people have mentioned, build an alloy / steel one.

In my testing, one converted Neo rotor has destinctly more power than two standard ferrite rotors on the same shaft.

I could get 35-40Amps @14V with two standard motors on the same shaft, which i was happy with, now i get over 50A with one Neo rotor.

The possibilities are endless, maybe 10mm deep magnets on a steel rotor.

Matt Lyons.