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rustyrod
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Posted: 07 January 2017 at 6:01am | IP Logged Quote rustyrod

I ordered some of the meters
I got the first China mill when they were all the rage years ago. By the time I got around to put it up the bearings were noisy immediately.
I think the Chinas are OK, I wish I could furl them. I have imagineered a furling cable, although I never seem to have the time to install it
I have GOT to do something with GIGU, it is starting to get to me

Next year! wait it IS next year already

I also have some of Phill's blades for a 32 volt Dunlite. I am still reconstructing the tower

I live down here



at the end of this road, I think the wind gets deflected by this extinct volcano ( I hope it stays that way) and channeled into this valley. See the lean on the trees, even the fence !

I have a few F&P all half constructed, one day I may get one done. I have a spare set of China blades and another set of American blades. It will make for an interesting comparison



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flc1
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Posted: 07 January 2017 at 7:39am | IP Logged Quote flc1

Ha! yep looks like you get a bit of wind there.
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electrondady1
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Posted: 07 January 2017 at 1:11pm | IP Logged Quote electrondady1

can you get any hot water out of that volcano?
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Madness
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Posted: 07 January 2017 at 9:24pm | IP Logged Quote Madness

rustyrod wrote:
I ordered some of the meters
I got the first China mill when they were all the rage years ago. By the time I got around to put it up the bearings were noisy immediately.
I think the Chinas are OK, I wish I could furl them. I have imagineered a furling cable, although I never seem to have the time to install it
I have GOT to do something with GIGU, it is starting to get to me

Next year! wait it IS next year already

I also have some of Phill's blades for a 32 volt Dunlite. I am still reconstructing the tower

I live down here



at the end of this road, I think the wind gets deflected by this extinct volcano ( I hope it stays that way) and channeled into this valley. See the lean on the trees, even the fence !

I have a few F&P all half constructed, one day I may get one done. I have a spare set of China blades and another set of American blades. It will make for an interesting comparison



As soon as I saw that photo I thought that looks like the area where I grew up and looking at your profile confirmed it. At a guess looking at the trees you were facing north when you took the photo.

I used to have a 1500W Dunlite on a 24M tower just north of Toowoomba on the edge of the range. However, there was way too much turbulence there for it to work effectively, it would just get going and then the whole head would do a 360 or 2 and lose it's momentum and then repeat the whole process. It flogged out the rollers in the governor several times due to this.

The area where you are is completely different terrain so you should not have the same problem.

Edited by Madness on 07 January 2017 at 9:26pm


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rustyrod
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Posted: 07 January 2017 at 11:36pm | IP Logged Quote rustyrod

Madness you are correct I was facing north, I left the rest of the mountain out of the pic as it is so recognizable.
The wind is a little turbulent, as these gennys are not very high.

I "jest" about the fence leaning from the wind. Dumb council graded a bank along the side of the road and the dirt is slowly pushing the fence over. I suppose they will realize their mistake and come back and fix it.

I wish I could get hot something from under there for geothermal power. I would need a very long hole now to get to the hot stuff.
There would have been plenty of hot water here a few million years ago
Actually no lava actually came out. It rose up and fell back 3 times then went cold.
There are many hills and humps around here where lava rose under the surface but never came through

The wind has been roaring through for the last few days. Eventually it gives one "bad hair days" and sometimes I think "enough already" as I can't do anything like spray weeds, windmill repairs or much to the gennys, even on the roof is uncomfortable and the bees sure don't appreciate having their lid lifted. They well and truly tell me to "buzz off"

The batteries are all over full so probably will go to "dump" today or maybe I should drag some leads across the kitchen floor and plug the frig and freezer in ?

I must do an up date on the solar hot water ongoings soon.


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Posted: 08 January 2017 at 2:11am | IP Logged Quote Madness

I grew up on a farm about 4 KM north of where the so called Brisbane west Airport is now. I remember when I was a kid we were getting a new irrigation bore drilled. There were many rocks that came out that clearly were solidified molten lava due to the ripples etc on them. Possibly from the same mountain in your photo if it is the one I am thinking of due to you comment about being so recognisable if you showed more of it.

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Posted: 08 January 2017 at 5:15am | IP Logged Quote brucedownunder2


if it was Biddeston ( I think thats the area) , then our family had a dairy out that way ..

Just a wild guess from my wayback family memory ??

Bruce

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rustyrod
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Posted: 25 November 2017 at 10:55am | IP Logged Quote rustyrod

Hi All,

The wind here has been relentless of late

Both tails furled (camera stopped the blades)



I noticed the second china genny spinning at high speed and also making a winging sound

I tested and found one wire was open circuit, therefore only one phase was now working

I let it down and deduced the slip ring assembly was faulty

I should not have been lazy and fitted a home made set in the first place

I bought one similar to



I now made up an assembly with rings and brushes from an alternator.

While it was down I modified the blades by cutting 25mm at the tip tapered towards the inner end.



I shaped and sanded the blades, then using a precision balance scale adjusted each blade to equal weight.



Then again using the balance adjusted each tip end to be equal weight also.

I then made a tapered shaft to suspend the hub with the blades attached.



I could not understand why one blade required a inch nut almost to the tip for a balance.

I had measured the tip to tip distances, there were slight differences

Many frustrating hours later after checking and rechecking I realised the blades were not sitting neatly into the hub, also the mounting holes were not equal distance from the tips.

I cut off the inner end and reseated the blades with only one bolt each, I'll be It almost balanced.



Hours later I discovered just one small tap sideways on a blade would throw the balance in another direction.

Finally I was able to drill new holes and bolt it all together, there was about 20 mm difference at the tips to being perfectly level.

I then re-glassed and painted the blades, they only needed a little sanding adjustment to balance again.

I enlarged the tail which had the side effect advantage of balancing the unit on the mast bearings

It is very quiet now and does not shake the shed any-more

I believe the time involved has nearly doubled the output of this genny

Time to tackle more blades.









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rustyrod
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Posted: 25 November 2017 at 10:59am | IP Logged Quote rustyrod



(Is that Casper or one of the others in the back ground?


So I took that noisy GIGU down

I had seen the blades buckled into a sine wave on numerous occasions

Sounds like the jake brake on a truck, not to mention I think it is vibrating the screws out of the roofing iron.

When it makes the noise it bogs down and usually flips back end into the wind

In fact it spends most of the time flipping backwards and forwards

I compared the blades on the precision balance

One was a holden wheel nut different!

I cut up to 6 mm from the tip, this made little difference

I used a belt sander and worked the whole blade, eventually I had two the same

Then repeating the sanding I managed to get them all very close to the same weight

I fitted a random piece of aluminium to the tail

GIGU now holds steady into the wind

It still makes the noise briefly at about 30 klms wind speed but then passes through the vibration and continues to make power.

I believe this time and effort has resulted in a four times the output

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Posted: 25 November 2017 at 5:08pm | IP Logged Quote Madness

That's a lot of work to fix something that should have been right in the first place.

Are you still working on the Dunlite? I was given one that is in pieces, needs a new gear for the armature, I am considering replacing the generator part with a few F&P motors.

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