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RevUpWind

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Joined: 03/05/2008
Location: Australia
Posts: 60

Posted: 08:58am 02 Jun 2009

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Have been testing different setups and have just noticed
that some rotors perform quite differently on a bench
test using the same wired stator?
So now am checking for best performers.
Does anyone know what is happening here?
PeterEdited by RevUpWind 2009-06-03

....River Heads - Australia
The wind blows wherever it wishes; you hear the sound it makes, but you do not know where it comes from or where it is going.

carl1
Regular Member

Joined: 16/04/2007
Location: Australia
Posts: 79

Posted: 09:16am 02 Jun 2009

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hi peter

the brown rotor seems be produce max. output.

Harald

Gizmo

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Joined: 05/06/2004
Location: Australia
Posts: 5119

Posted: 09:32am 02 Jun 2009

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From a manufacturing point of view, its quite possible. Depending on who makes the F&P Smartdrive magnets, there may be batches with more or less magnetism than the norm. As a motor, this isn't really a problem, the controller will adjust the input power as needed to achieve the RPM required. Its designed to do that, adjust to different wash loads. But as a alternator, as you have found, it can make a difference to the power we can get out. Its possible two identical motors used as alternators could have a difference in power output by a few %.

Interesting. Anyone got a gaus meter?

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

RevUpWind

Regular Member

Joined: 03/05/2008
Location: Australia
Posts: 60

Posted: 09:58am 02 Jun 2009

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Harold, by brown I think you mean the pale sort of brown
translucent rotors and that is what we used today. It
showed 18amps while a grey one showed 10amps in similar
situation.
Glenn thats very interesting and methinks a gaus meter
measures magnetism? Is that like degaussing your
TV.

More things to think about when putting these things
together.

Peter

....River Heads - Australia
The wind blows wherever it wishes; you hear the sound it makes, but you do not know where it comes from or where it is going.

carl1
Regular Member

Joined: 16/04/2007
Location: Australia
Posts: 79

Posted: 10:12am 02 Jun 2009

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Hi Peter
I came across the folowing rotor colours:

light creme the first single magnet rotors: ~10% less
creme speckled
common grey
light grey
translucent creme
speckled brown - best output: about 1amp more then grey

I did some test old single mags, creme against grey and the brown one.

Harald

GWatPE

Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127

Posted: 07:26am 04 Jun 2009

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The speckled brown type is more rigid as well. Better all round, but not very common.

Gordon.

become more energy aware

carl1
Regular Member

Joined: 16/04/2007
Location: Australia
Posts: 79

Posted: 01:56pm 08 Jun 2009

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here is a picture from different rotor colours
Harald

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