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#Post#: 632--------------------------------------------------
Re: Seagull DIY Discussion
By: lynx wind Date: October 25, 2013, 8:05 am
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@nessprojects
Welcome. Your magnet plate is a good idea and will work very
well. Keep us posted.
#Post#: 653--------------------------------------------------
Re: Seagull DIY Discussion
By: nessprojects Date: October 26, 2013, 3:34 pm
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Got my turbine painted now ;D
Received 1000g of 0.71mm copper wire today (approx 21AWG) so PMA
building can now begin.
Using some old 25mm Diameter by 10mm thick round Neo magnets and
going to try and squash all 1kg of wire into the stator. Checked
resistance of the full roll and came out at 12 ohms, (should cut
in pretty early).
All the best . . . . NP
#Post#: 654--------------------------------------------------
Re: Seagull DIY Discussion
By: sut Date: October 26, 2013, 5:10 pm
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Fyi to all When you make your stator press use something
heaver than 3/8 inch ply! I would use 3/4 ! When I pressed all
of that wire in to the stator form the center bulged up and left
me about 1/8 inch higher in the center compared to edges where
the clamps were. Or make sure your your clamps are as close to
the center as they will reach . You could also use a piece of
steel to hold everything down in the center . I was Very tempted
to try and sand it down but I didn't want to break through and
ruin my stator.
But besides that it came out great I placed the magnet plate
on it and gave it a spin I could get it up to 10 volts ac (not
bad for my fingers ) I just put the fiberglass on top section of
rotor and it looks good (nice to see 1/2 of the wings in place .
so close i can taste it
#Post#: 678--------------------------------------------------
Re: Seagull DIY Discussion
By: sut Date: October 29, 2013, 10:04 am
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Finally !!!!!!
[attachment deleted by admin]
#Post#: 680--------------------------------------------------
Re: Seagull DIY Discussion
By: lynx wind Date: October 29, 2013, 10:49 am
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Looks great. Any wind? Traditionally there is a new wind
turbine no wind curse that lasts for 7 days : )
#Post#: 682--------------------------------------------------
Re: Seagull DIY Discussion
By: burnit0017 Date: October 29, 2013, 4:05 pm
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Hi sut, looks great. I look forward to your test results.
#Post#: 683--------------------------------------------------
Re: Seagull DIY Discussion
By: sut Date: October 29, 2013, 4:29 pm
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Hey Thx all !!!!! and yes I know about that curse I have had it
3 times before ! I still have some tweaking to do to it. I am
using CG. idea about the bolt in the cap on the brass nipple,
But I am running to problems with the magnets not coming down
close enough to get that 1/6 1/8 inch clearance from the
stator. The nut that holds the bolt to the magnet plate is to
thick and the threads are really not long enough to put the nut
on top. Now normally this wouldn't be any trouble to fix but I
went with a 10 mm bolt to get a closer fit into the brass nipple
(all my dies ant taps are US standard ) oh well I will work this
out I just had to see it fly
#Post#: 684--------------------------------------------------
Re: Seagull DIY Discussion
By: nessprojects Date: October 29, 2013, 4:42 pm
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Looking very nice sut, I assume you have used the aluminium
wings that you built. Great Job.
Just a thought on the threading problem, could you cut a nut in
half so you have 2 thinner nuts ?.
All the best guys NP
#Post#: 691--------------------------------------------------
Re: Seagull DIY Discussion
By: sut Date: October 30, 2013, 7:23 am
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@ CG Duh!!! I didn't think about making the hole in rotor bigger
you don't need it to hold the plate in place though it does
help am sure . @ Nessprojects yes I am using the aluminum wings
( want to see if they hold up ) . I will cut the nut in half to
gain the needed clearance but, before i do so I will take some
readings to see if makes a diff in power output Thx again to all
#Post#: 695--------------------------------------------------
Re: Seagull DIY Discussion
By: lynx wind Date: October 30, 2013, 7:15 pm
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CG,
Really, the steel magnet plate isn't screwed into the rotor?
You may want to do that. The torque force on the rotor is
extreme in high winds. The only thing that will slow it down is
the EMF of the magnets past the coils. Trust me, I have made
every goof, every oversight, and neglected tightening bolts and
setting set screws in deep.
The torque is so strong in high winds a vice wouldn't hold the
pole. Whatever the weak link is, you'll discover it when winds
exceed 25 mph.
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