Matt Swearingen's homemade
Power Star Extreme takes a beating from flying debris in a violent
storm.
Matt said in reference to the safety of TLG
Windpowers Rotors:
"But one thing I can say is,
if this were a wooden blade I would have pieces of it in my house,
the neighbors house, the barn down the road, and possibly in a house
in the next county."
Click on any image to view full size.
Matt's comments on the storm and crash are below the images.
Look at the blade at the 7' o'clock position
You can see it was the one that got hit.
The impacted blade is now down at the 6 o'clock position since
the rotor was still trying to run.
That is almost enough to make a grown man cry. :(
Comments
from Matt about the storm and the events that transpired during.
The
5 bladed Tri Nado Extreme dies a horrible death.
I
woke up last night (6-7-05) at 11:00pm to go to work I could hear
the wind was blowing a little but I didn't think much about it.
Went out into the
living room, the kids were watching TV like
normal. I
opened the fridge and it hit me the electricity is out.
That's the bad thing about having automatic battery back up. I
didn't even realize the juice was out.
Well
Ok I walked out into the entry way where my control panel is for the
Wind Genny and Power Inverter.
My first words were
Oh Sh# t. I have two gennys running the little one was pumping out
600 watts, I didn't think it could do that much in any wind. It's
got the Tri Nado Elite Blade running it but the Genny was just never
built for that, I didn't think.
Now the big Genny with the modified 5 bladed Tri Nado Extreme. This
thing was cranking out 2KW plus. I ran to my wind speed meter
and, oh now that makes sense it was showing 30mph but it had
peaked out at 40mph.
My
computer has it's own battery back up but it's not connected to the
main battery bank so I shut it down before the UPS dies on it, no
more wind speed meter.
So
by now the wind is really picking up bad nasty nasty wind 50 foot
trees are pulling over to what looks like almost a 45degree angle.
Ok so at this point I'm thinking I need to shut this thing down, so
I wait for the wind to lul just a bit so not to just rip things
apart when throwing the kill switch. OK
that's done I'm looking at this thing during bursts of lighting
otherwise it's pitch black outside.
This went on for about 20 minutes and the whole time the wind just
seems to keep getting stronger.
Then
it happened I heard that fatal sound of something give way and the
sound of the blades just take off making the sound of a helicopter (
almost ), it was very loud and a bit scary I wish I had an RPM
reading off of them because I know they were moving. I could
not see them but I could sure hear them like they were going to take
off.
Well
you guessed it the next thing I heard was the blades hitting the
tower.
Lightning lit up the sky, I could see the blades were just mangled,
I was not surprised but what did surprise me was the fact that
they're still spinning and at pretty good clip too.
I
figured that the stator burned out or something but after I got it
down this morning I found the stator broke loose from it's mounts
and just started spinning with the blades.
The one thing in the whole set up I never gave a second thought to
was the sturdiness of the stator mounting, I figured it would hold
fine something else if anything would give first.
When
I was on my way to work, Late of course because of the whole ordeal
the radio said we had over 80MPH winds in our area. I work about 20
miles from home and I was dodging trees in the road the whole way
there it's really a mess around here.
But
one thing I can say is, if this were a wooden blade I would have pieces
of it in my house, the neighbors house, the barn down the road, and
possibly in a house in the next county. Even though I lost my new
blade in the first real wind I've had since I put it up at least no
person was hurt and I can send that message out to all you wooden
blade owners.
Thanks
for reading my story, now I must go to work on my next wind Genny.
Matt Swearingen
Additional comments from Matt:
(6-8-05)
I
forgot to mention the balance on this 5 bladed Extreme was excellent
right up to the point of destruction. I
don't believe I'll ever get them to balance again.
However
I've been looking these blades over and I believe I can save 3 of
them and put them back up with the old 3 bladed hub and my old
stator until I figure out what I want to do next. I do want to get
the 5 blades back because I know it had some unbelievable power. I
just wish I would have had some 14 to 25 MPH winds before the
80+MPH.
Since
I've put it up, my wind meter has only peeked out at 11MPH until
last night of course, and I've seen it produce up to 144 watts at
around 9mph
Well I think the pictures I sent you will make a great addition
to your web site picture gallery.
I
have to laugh about the whole experience now that it's over.
Because I know I'm
moving in the right direction with this I just need to sturdy things
up a bit better before moving on to the 5 blades again and maybe
install some sort of braking system besides just shorting it out. I
know if I could have stopped it dead everything would have been
fine.
Oh
well live and learn
Additional comments from Matt as he works on
his blades: (6-11-05)
I've
been working on straitening blades, I've
got 3 real close, 1
not too bad but I don't want to try and use it, but now that 5th one
( Oh My ) this thing after really looking it over close I realized
it made contact with the tower about 6 inches in from the tip of the
blade and actually stretched the blade.
When I tried
to straighten it out it became apparent that this thing was not only
bent and twisted, but had stretched out at about 20 inches in from
the tip of the blade.
I tried some shrinking methods I've used on auto body repair that
helped, but I could not shrink it enough to even get it close to a
straight blade.
There
is no doubt in my mind that this blade was struck by flying debris
and pushed back into the tower. There
is just no way that it could have flexed back so far as to hit the
tower 6 inches in from the tip all of a sudden. The
very tips should have made contact with the tower first which should
have then slowed the blades down, and of course mangled the tips
out.
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