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brucedownunder2
Guru

Joined: 14/09/2005
Location: Australia
Posts: 1548

Posted: 09:01pm 01 Mar 2008

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Hi Brian,, thats just the plastic hub surround cut from the base of the bowl-around 250mm dia then clean it up with a spokeshave and weld up a support frame to get it rigid . That big "v" belt drive is off a concrete mixer -12 inch dia ,I think --this reduces the rpm down a fair bit when belted up to a 1440 rpm motor--but remember,you nedd a fair size electric motor for your tests,around 2HP. my 3/4HP just refuses to power the F&P past a certain o/p.

Thats the new type magnet rotor,I just painted it red for uv protection and so it is identifyable from the old model rotors.

Bruce

Bushboy

Faust

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Joined: 15/02/2008
Location: Australia
Posts: 15

Posted: 06:07am 05 Mar 2008

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Perhaps this is not the right place for this question, but I measured about 1/6 of the voltage of the 80-series stator when using a 100-series stator. That would mean that the 100-series stators really do not need any modification for use in a wind power generator ? Also, of course the winding's DC resistance of the 100-series is much lower than in the other series. Any advice is welcome.

Faust

Gizmo

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Joined: 05/06/2004
Location: Australia
Posts: 5116

Posted: 08:34am 05 Mar 2008

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Yes Faust, your spot on, the 100 series stator can be used as is. No need to re-wire. Dennis Lathan did some research and found a 100S and a 5 blade turbine ( slower running, lots of torque ) was one of his best performing windmills. The power peak is not as high as some F&P windmills, but it makes better power in lighter winds, a good all rounder.

Glenn

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

Faust

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Joined: 15/02/2008
Location: Australia
Posts: 15

Posted: 08:06pm 05 Mar 2008

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Thanks Glenn (and thanks for a wonderful website!). It must be the low DC resistance that helps increasing the efficiency. The 100's surely have to have a lower coil inductance which might be the reason for the lower peak power. I'll do some measurements soon.

cheers

Faust

Gizmo said Yes Faust, your spot on, the 100 series stator can be used as is. No need to re-wire. Dennis Lathan did some research and found a 100S and a 5 blade turbine ( slower running, lots of torque ) was one of his best performing windmills. The power peak is not as high as some F&P windmills, but it makes better power in lighter winds, a good all rounder.

Glenn

martinjsto

Senior Member

Joined: 09/10/2007
Location: Australia
Posts: 149

Posted: 12:08pm 06 Mar 2008

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hi guys,
what sort of voltage/amp would the 100 series unmodified put out?
i am making a vawt from old a/c scrolls, aprox 800 dia by 600 wide.
and am looking at one mounted reversed from the other so to run in opp direction as per other post.
thanks
martin

free power for all
McAlinden WA

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