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#Post#: 3456--------------------------------------------------
"Design Flaws Part 1 of 693"
By: happygolucky Date: June 23, 2014, 12:19 am
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attention to lynx an others ...the large center nut attached
to harden spindle / shoulder bolt came loose it wobbled.. large
center nut was loose on magnet plate an vawt ..i heard a clank
on start up may have had a slight binding. as a vacuum seal is
present when trying to remove the vawt with magnet plate an
shaft from hub.. to tighten top center large nut we did twice
now, when tightening make sure you use a piece of leather on
shaft as to not mare/damage the shaft it is precision tooled
fit..
the spindle slides into stator/alternator center hub with 4
screws riding on bearing..why is nut working loose ?
#Post#: 3457--------------------------------------------------
"Design Flaws Part 1 of 693"
By: happygolucky Date: June 23, 2014, 12:53 am
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i kept hearing a small clatter sound like a binding noise on
start up..almost as if it where something binding or loose..it
was the nut upon inspection inserting into hub with bearing it
takes a moment to seat a black substance is present when
removed which i believe is the epoxy polyurethane resin it is
black..an on shaft also is present in oil.. as is the magnet
shaft nut coming loose is in question..
we have tightened it twice now. this is a serous flaw top nut
should not loosen... why it comes loose, i have not figured this
out..it should have lock tight an lock washer... it seats flat
against magnet plate....there are 4 screws on top of alternator
coil hub under ..i did not check to see if they where loose oil
seeped between hub an stator ?.... the hardened shaft when
inserted in center hub riding on bearing. oil leaked out as
there was pressure...this should be normal. an cause a slight
spill over on top not underneath?, excess lubricant over flow,
i do not like the large center top nut coming loose on magnet
plate? could be why i did not see any action ? there was some
wind..today
you could have a catastrophic event.. if that nut came off! it
was wobbling i could see it the play..that's how i noticed
it...top large nut coming loose should not happen... it should
be locked down tight with loctite or lock washer on shaft to
magnet plate.it should not come loose. maybe a cotter pin? you
have been made aware!
hgl
#Post#: 3461--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: sut Date: June 23, 2014, 8:02 am
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I agree! what way is your windmill turning you may need to
change direction (put mag plate on opposite) side to make it
tighten bolt when it spins if loctite does not stop it. the
bigger alt may be to blame putting more force on magnet plate .
Wait their shouldn't be anything causing this, that bolt does
not have any friction on it to cause it to loosen . Maybe the
stator is causing the mag plate to vibrate and shake the nut
loose, this is a puzzler
#Post#: 3462--------------------------------------------------
"Design Flaws Part 1 of 693"
By: happygolucky Date: June 23, 2014, 8:03 am
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no joking, lynx or cg this is serous... i have checked
everything... it sounds like it is internal or external not a
constant.. only makes sounds in part of a revolution turn
.....i feel it in the the pipe.. making contact threw or
grinding i'm going to put my ear to it an see what i hear....you
can feel it threw the pole only a hit an miss sound ...as a
matter of fact it still feels like something is scrapping this
morning i gave it a little spin an the vibration or contact is
still present it is felt an amplified in the pole inside the
tube with bearing or again magnet plate ma be making contact
with stator may be a slight high spot in mold form..you can feel
the vibration when it spins a surface is making friction
contact it is either inside the tube or it is the magnet plate
coming in contact with stator.. on on side i do not know my old
turbine dose not do that
great care an protection have been in place in protecting VAWT
it has me concerned deeply.
3-1 oil is the oil being used.. lynx you should not feel that
friction contact when you place your hand on the pole you can
feel the contact friction
#Post#: 3463--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: lynx wind Date: June 23, 2014, 8:41 am
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SUT is right. The opposing force is between the magnets and the
coils. The shaft is really only along for the ride and to make
sure the plates remain parallel. It is possible there was a
burr on the plate and the speed nut didn't fully compress. The
speed nut has teeth underneath that cut into the steel. No
locknut needed.
Regardless of that, mechanically something is wrong. Do not run
the turbine at all, because the magnets may tear up the stator
or coils.
Sounds like the locked adjusting screw has moved or the stator
somehow misaligned. Please consider removing the alternator and
let me go over it. It will only take an hour or so to put it
right.
#Post#: 3464--------------------------------------------------
"Design Flaws Part 1 of 693"
By: happygolucky Date: June 23, 2014, 8:48 am
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ok ..lynx i see the problem now.... with very powerful
binoculars one side of the alternator is higher not parallel
with magnet plate.. which means one of two things..stator is
making contact but i saw no evidence ..inside hub shaft was
black which means it is rubbing inside on stator shaft is not
true to magnet hole inside diameter of hub is not true ... both
should be flat perfectly parallel true centered to
center..witch would account for the blackness on shaft it is not
true to magnet surface shaft is not centered in side hub rubbing
inside..making noise an preventing it to turn..... i see a gap
on one side not the other after i tightened top nut as oil
dripped to that side that is low... an not the other..either the
shaft is not centered true inside hub which looks to be the
case magnet plate is not parallel with stator/ alternator...
thus causing it to rub an tilt to one side..
hub or the alternator is not true or squared an both surfaces
must be parallel to one another.. pole an everything on my end
is square an true oil is dripping off the low side with gap
between magnets an coil alternator is true... it is not flat an
or square,parallel to magnet plate alternator/ stator to
magnet plate. not parallel
the sator is warped an when i tightened the top screw it just
make it worse..
#Post#: 3467--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: lynx wind Date: June 23, 2014, 10:00 am
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If you can get it removed and take off the blades so its just
the alternator , I can pick it up. I can come over to your area
if needed. Just let me know. Sometimes on a new design things
need slight adjustments. Turning by hand probably wasn't a good
enough stress test.
#Post#: 3468--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: happygolucky Date: June 23, 2014, 10:56 am
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ok lynx... the vawt is down an safe... upon further inspection
as i mentioned that it was not parallel with magnet plate this
is true.
it isnot level one side is thicker..an coupler is not square to
altenator
what is happening is one side of alternator is thicker by
1/16-1/8 inch....measured off flat surface..
one side is thicker an you can see slight scrap on thick side of
alternator..... no damage..but there is another problem coupler
is sloppy to much play wiggles even when pinned X 2 inside dia.
is larger on coupling than the emt 1.5 pipe..
also distance from bottom of stator to i assumed press fit
coupling on 160 alum is off about 1/6 one side measured 2 1/8
an other side measured 2 3/16 from bottom of stator to top of
press fit coupling with 2 set screws..i know what needs to be
done but your the boss..
#Post#: 3469--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: happygolucky Date: June 23, 2014, 11:39 am
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coupling on alternator shaft to hub is not square..or
level..tolerances stack against you..
happy
#Post#: 3470--------------------------------------------------
Re: 175 design flaw part 1 of 2
By: happygolucky Date: June 23, 2014, 11:59 am
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yes lynx,we can meet any time i'm easy to get along with... just
tell me when an where i have a time slot taken for my grand
daughters bible school from 10-2 ..if you need to come here
that's fine too.. we can meet where ever.. we can meet at
another place.. i can meet you anytime after 2 just let me
know..i sent pic of what is wrong..
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