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Joblow
Regular Member
Joined: 05/01/2010
Location: AustraliaPosts: 54 |
| Posted: 12:47am 06 Jan 2010 |
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Hi Guys, I've been soaking up secrets from your site for a while and am now going to give it a go. I've checked out a smart drive from a F&P, but the rotor plastic casing is cracked and doesn't run true, is this a common problem? However, i spun it up in the lathe just to satisfy myself that it still works.
My main question is: has anyone tried mounting several F&Ps in line and switching them in with 12v automotive airconditioner clutched as the windspeed increases?
I have an 18 metre triangular section tower to mount it on.
Thanks, in anticipation
The man who never made a mistake never made anything |
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DTV004
Regular Member
Joined: 30/04/2009
Location: United StatesPosts: 65 |
| Posted: 07:44am 06 Jan 2010 |
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the crak is no problem. on the speed thing for brake i use auto furling ...and switching them in with 12v automotive airconditioner clutched i don't have no idea. |
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Downwind
Guru
Joined: 09/09/2009
Location: AustraliaPosts: 2333 |
| Posted: 08:34am 06 Jan 2010 |
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Welcome Joblow,
In my thoughts the current required to switch the clutch in is far to great to make it worth while.
Then it is just some other thing up the top of the tower to fail and cause problems.
Pete.
Ps. lucky you did not spell your name the other way around with a " B " on the end. 
Sometimes it just works |
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Joblow
Regular Member
Joined: 05/01/2010
Location: AustraliaPosts: 54 |
| Posted: 10:21am 06 Jan 2010 |
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Thanks for the input guys, I think the conventional way may be better too, the info I've read so far is pointing me towards the 7 phase option with no slip rings (flex through the centre of the kingpost and unwind the turns once in a while) although it may be quite easy to fix a weak torsion spring to the rotating axis so the mill returns to the same position when there is a complete lack of wind.
I also have a large five element fan blade (2.2m dia)which I'm going to pick your brains about on another post when I have the measurements. 
The man who never made a mistake never made anything |
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Joblow
Regular Member
Joined: 05/01/2010
Location: AustraliaPosts: 54 |
| Posted: 10:25am 06 Jan 2010 |
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Just worked out what you meant by the name spelling, Downwind. too
The man who never made a mistake never made anything |
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Downwind
Guru
Joined: 09/09/2009
Location: AustraliaPosts: 2333 |
| Posted: 03:51pm 06 Jan 2010 |
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I must be dislexic, as every time i read your name my eyes read it backwards. Think its got something to do with the "B" making two words.
Good to see you have a sense of humour to. 
Pete.
Sometimes it just works |
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KarlJ
Guru
Joined: 19/05/2008
Location: AustraliaPosts: 1178 |
| Posted: 01:19am 12 Jan 2010 |
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Joblow
you have the most important piece of kit in hand...
the tower.
Building the turbine is going to be the easy bit.
Here's my tip for the day, use two stators instead of one that way you can reduce cogging by both twisting the poles and offsetting the stators relative to each other, also gives a smoother match to the available wind power and thus you'll be making power more of the time.
I have heaps of 80S rotors and stators.
BTW, hope you got the bearing block and shaft too out of the washing machine, you'll be needing those too.
Luck favours the well prepared |
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