Author Topic: H-Darreius wind turbines ( VAWT ) ! (Read 78575 times)

DanG · « **Reply #99 on:** April 28, 2020, 11:17:12 AM »

Ah yes, to see more clearly... Thanks for posting : )

MattM · « **Reply #100 on:** April 30, 2020, 08:17:20 AM »

Thanks for correcting his gamma settings.

topspeed · « **Reply #101 on:** May 02, 2020, 09:31:53 AM »

Quote from: MattM on April 30, 2020, 08:17:20 AM

Thanks for correcting his gamma settings.

Yes lightness does good to the clarity.

topspeed · « **Reply #102 on:** June 28, 2020, 01:53:10 AM »

Electric cables cut to the right lenght....and fitted.

topspeed · « **Reply #103 on:** June 28, 2020, 04:00:25 PM »

Another angle to it.

topspeed · « **Reply #104 on:** June 30, 2020, 01:52:04 PM »

The electric circuit consists of 3 car headlight lamps.

Stripe coding allows me to find the right leg when assembling the systen outdoors for tests.

topspeed · « **Reply #105 on:** July 08, 2020, 01:15:36 AM »

All systems are now...GO !

topspeed · « **Reply #106 on:** July 13, 2020, 03:25:44 PM »

Almost got it running.

Bruce S · « **Reply #107 on:** July 14, 2020, 08:21:16 AM »

They shoreline waves looks like you have a nice steady wind at about 3 m/s?
Should be a nice test.

Cheers
Bruce S

topspeed · « **Reply #108 on:** July 25, 2020, 09:34:03 AM »

Quote from: Bruce S on July 14, 2020, 08:21:16 AM

They shoreline waves looks like you have a nice steady wind at about 3 m/s?
Should be a nice test.

Cheers
Bruce S

I had enough time yesterday to complete the first test.

Legs are too weak..it starts to oscillate at 350-400 rpm.

I have to reinforce them.

Keeps turning at 2 m/s...9-10 m/s seem to be right now a bit too much.

topspeed · « **Reply #109 on:** July 28, 2020, 12:22:43 PM »

After several modification and tuning and some soldering I am ready for a new round with my VAWT.

Legs are reinforced and a new kinda vibration is fought with a trim tab....apparently I managed the make little wash out on the other wing...5 mm most ...at tip.

SparWeb · « **Reply #110 on:** July 29, 2020, 12:33:43 AM »

Quote

.it starts to oscillate at 350-400 rpm.

If you increase the load from the electrical generator you can cause the VAWT to slow down.

topspeed · « **Reply #111 on:** July 30, 2020, 11:43:09 AM »

Quote from: SparWeb on July 29, 2020, 12:33:43 AM

Quote
.it starts to oscillate at 350-400 rpm.

If you increase the load from the electrical generator you can cause the VAWT to slow down.

Yes that is acknowledged. There was a failure in a connection in "the light box"..no connection...I had to buy a new soldering tool to get it straight.

The emergency shut down worked fine in 10 ms wind...as I have no disc brake in it.....I have to short cut the generator and use broom to slow down the arm that wings are attached to...then grab the wing with hand. If it was any bigger I could not manage it by myself.

I can make new wings next winter....but for now I have to go forward with what I've got.

topspeed · « **Reply #112 on:** August 04, 2020, 11:13:39 PM »

There is a shadow in paradise now....the rpms halved after all the antiresonance systems that really did cause it to vibrate less ( they nearly vanished ).

The trim tab was possibly a "fatal" error. But one of the bearings seemed afterwards to be in a tilted angle...so many things may have caused it...done 4 mods last nite. I hope it all helps.

topspeed · « **Reply #113 on:** August 11, 2020, 02:28:05 AM »

After lot of balancing and reinforcing I got 449,3 RPM reading, but still no electricity. Next I will open up the generator.....and do what has to be done.

[ Specified attachment is not available ]

topspeed · « **Reply #114 on:** August 31, 2020, 02:04:08 AM »

Sorry to disappoint you all, but Planet geared gene system seems to be too heavy for my wingsystem. All summer long I have had to reinforce the tower structure to keep it real steady. I accomplished at least that. I will try without the gear once more then I am done. After that new wings and the moment arm have to be constructed, but 30% or better efficiency is hardly available here.

electrondady1 · « **Reply #115 on:** August 31, 2020, 09:05:31 AM »

i thought you had abandoned the planetary gear drive back at reply #27

topspeed · « **Reply #116 on:** August 31, 2020, 11:37:04 AM »

I did start testing without it......but as nothing happened I put the gear back...not knowing I had loose wires in the system that prevented electricity go as planned in the system.

topspeed · « **Reply #117 on:** September 04, 2020, 12:35:31 AM »

Okay..I purhased a tool to make spars for the next set of wings.

I still do have a long way ahead to reach what I am after...which is sustainable living.

electrondady1 · « **Reply #118 on:** September 04, 2020, 07:53:08 AM »

you can do a lot with a table saw.

Bruce S · « **Reply #119 on:** September 04, 2020, 08:58:04 AM »

Quote from: electrondady1 on September 04, 2020, 07:53:08 AM

you can do a lot with a table saw.

Smoother cuts than with a chainsaw too

Bruce S

topspeed · « **Reply #120 on:** September 13, 2020, 01:37:06 AM »

Quote from: Bruce S on September 04, 2020, 08:58:04 AM

Quote from: electrondady1 on September 04, 2020, 07:53:08 AM
you can do a lot with a table saw.
Smoother cuts than with a chainsaw too

Bruce S

I also got me a router as I could not afford the laser cutter.

topspeed · « **Reply #121 on:** September 17, 2020, 12:40:37 PM »

I tested my system at 15 m/s wind ( in gusts )...and 13 m/s average wind.

Halogen shines brite....so it does create electricity.

topspeed · « **Reply #122 on:** February 11, 2021, 05:44:16 AM »

Hi all and happy new year 2021 !

My both computers died before christmas. Thus lost the contact too.

I did test further.

I have some plans to re-tune it again.

electrondady1 · « **Reply #123 on:** February 11, 2021, 08:42:01 AM »

please carry on

SparWeb · « **Reply #124 on:** February 11, 2021, 09:24:55 AM »

Welcome back.

topspeed · « **Reply #125 on:** February 12, 2021, 08:37:34 AM »

Quote from: SparWeb on February 11, 2021, 09:24:55 AM

Welcome back.

Thanks folks...good to be back here.

This is the last test in 2020 at 16-18 m/s wind...some damage did occur.

topspeed · « **Reply #126 on:** April 16, 2021, 08:53:10 AM »

Okay dames and dudes !

I determined that my wind turbine tests failed as the work quality was poor, turbine ( affecting area ) too small for the hard/heavy geared turning generator and in some areas too weak wood quality was present.....and also some details were far from adequate for a fast turning turbine.

I can get away with my tower, but wing and the middle "shaft " have to be redone...they are now ready for cutting.

Might take a month or two.

SparWeb · « **Reply #127 on:** April 17, 2021, 02:36:47 AM »

You never know what you're going to learn, but when you expose a new machine to the forces of Nature, you can be sure that she will try to teach you a lesson.
Happens to all of us!

topspeed · « **Reply #128 on:** April 17, 2021, 09:35:16 AM »

Quote from: SparWeb on April 17, 2021, 02:36:47 AM

You never know what you're going to learn, but when you expose a new machine to the forces of Nature, you can be sure that she will try to teach you a lesson.
Happens to all of us!

Yes Sparweb...it is a terrible feeling to realize that your first serious attempt was only meant to teach you.

topspeed · « **Reply #129 on:** April 17, 2021, 09:36:21 AM »

double

MattM · « **Reply #130 on:** April 18, 2021, 10:01:28 AM »

Quote from: topspeed on April 17, 2021, 09:35:16 AM

Yes Sparweb...it is a terrible feeling to realize that your first serious attempt was only meant to teach you.

But it was a pretty first attempt. One of the best looking projects.

Mary B · « **Reply #131 on:** April 18, 2021, 01:25:38 PM »

"Failure is the mother of all invention!"

Have to fail before you fly!

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Author Topic: H-Darreius wind turbines ( VAWT ) ! (Read 78575 times)