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351
Coil winding / Re: Building the sickest® VAWT ever. Brilliant minds unite please!!
« Last post by JW on March 01, 2024, 02:47:37 PM »
Quote from: brandnewb
WHen I press the insert image icon all that happens is
unable to insert an image. How is that supposed to work?

This what we have been talking about all along. We noticed this recently. We cant fix it just yet. Were working on it.... it is highly unusual for us to not be able to upload pics. We know what it is and how it works (thru a MOD). Thats just SMF.

Its looking like it will take another week to get it fixed.

JW
352
Coil winding / Re: Building the sickest® VAWT ever. Brilliant minds unite please!!
« Last post by JW on March 01, 2024, 02:26:02 PM »
good job...
353
Coil winding / Re: How to determine the lmits of a coil / magnet configuration
« Last post by TechAdmin on March 01, 2024, 02:25:56 PM »
The most difficult part seems to be how to get from a measurement of time to something like watts.
Even with my limited understanding, I would be interested into this, if you check how much pain and suffering stators have caused me: https://www.fieldlines.com/index.php/topic,150320.0.html you will easily be able to understand why.
354
Restored and unlocked.
355
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on March 01, 2024, 01:40:45 PM »
Quote from: brandnewb
However!! And here comes the important part. I am here as a friend. Not as your adversary.

Your over thinking the situation. I don't consider you an adversary LOL :)

I built and own the site, I like to raise a little hell every now and then. Don't reply just yet, let me get back to you, need to think about this some more :)
356
Logged in diaries / Re: VAWT backyard experiements
« Last post by brandnewb on March 01, 2024, 10:01:30 AM »
JW, let us try and reason. If I wanted to be a security issue then you know I can be.

I have all the experience needed to lay flat a server or even several of them by means of distributed denial of service.

Also I know how to look for weak points and how to abuse an attack surface to get into systems where I do not belong and certainly am not welcome.

However!! And here comes the important part. I am here as a friend. Not as your adversary.

Please just trust I only post here and do nothing else to risk the stable operation of your website.

kind regards

You have no idea of the possibility of what could be happening do you. Over the years I have seen uc/users install bugs and viruses. Ive seen it many times. Im not going get into this anymore. I Have Identified the bug. we have systems provided by our host that protect us. anyway you guys have never seen the attacks we have endured. Due to the closed minds here lately, I dont feel like talking about this anymore. Your safe be happy. I have regained some urls that I lost and am going to work on them. there is a huge vulnerability that materialized with brandnewbe  showed up. you guys need to relie on Flavio, im trying to get him the access he needs from the host. theres alot going on but we cannot fix it until I follow thru on the hosts identification system (user/owner). Untill we are verified by the host, they wont do anything, if there is an attack of sometype going on were helpless, untill we are verified by the host as the true owner/user we can not fix the security issue. When I started working on the web it was fun, but threats have evolved and things have changed. You try to make an SMF fORUM like this one and tell me all about it...
357
Storage / Re: Sand Batteries
« Last post by bigrockcandymountain on March 01, 2024, 06:29:23 AM »
I kinda skipped this thread and then got curious and read a bit if it.  I maybe missed some things. 

The question is, why sand and not water? Quick research says water is 4200J/kg C

Sand is 830J/kg C

For the same weight of battery you would need the sand to be 5x hotter for equal storage.

Say water storage with a temp rise of 70 degrees above ambient, (20C) so 90C max.  Sand would need to be 370C for the same storage.  To me, that is a fire hazard.  It is also way harder to heat because it is a solid so can't have thermosiphon currents circulating to mix in the heat.  Heating elements are cheap and available. It doesn't need to be hauled in.  Just pump it in, drain it out.  Works good with simple heat exchangers.

Am I missing something? 
358
Coil winding / Re: How to determine the lmits of a coil / magnet configuration
« Last post by brandnewb on March 01, 2024, 06:21:13 AM »
Believe me I have tried reaching a consensus on several fora on how to quantify the abilities of a magnet/coil configuration.

And since I believe the most knowledge people in the field are here I will just keep hammering on.

@Adriaan Kragten (because of general advanced knowledge)
@Joestru (regarding the mechanical resistance and the gravity torque test)
@MaryB (regarding coging)

If you guys would just give it a try then I trust we could finally get there.

The most difficult part seems to be how to get from a measurement of time to something like watts.

Let us get this show on the road gang. You have no idea how much of an importance this is!

{1}And I realize I mentioned already having found a guide on how to do this and at first glance it did look to me like that. But then I found he left out the important bit of how to convert time to watts{/1}

359
Wind / Re: H-Darreius wind turbines ( VAWT ) !
« Last post by topspeed on March 01, 2024, 04:58:46 AM »
I cannot post pics.
360
Wind / Re: H-Darreius wind turbines ( VAWT ) !
« Last post by topspeed on March 01, 2024, 04:54:59 AM »
Example message
361
Storage / Re: Sand Batteries
« Last post by JW on March 01, 2024, 02:45:20 AM »
 
Quote from: Bruce S
Bruce- Reply #7 on: February 23, 2024, 10:24:32 AM »] I know from reading a bunch of your posts and answers to other posts, you understand THE DANGERS when doing these sort of tests and I know JW is a steam guru, BUT anyone else reading these needs to watch the video so they are aware of how quickly things can get deadly.

ACB R&D misc 2004 5

I actually had an old hit and miss engine explode on me, not really it snapped the connecting rod and the piston landed of the roof of the building next to us, from the event we figured out how to 100% prevent that from happening ever again. The design was observed with the 4 cycle steam engine. As long as the intake and exhaust valves are forced open with a camshaft lobe, your good. the engine can run both backwards and forwards and not pressure lock.

JW
362
Wind / Re: Classical US multibladed metal wind rotor....?
« Last post by topspeed on March 01, 2024, 02:18:43 AM »
No it says still...path cannot be empty.

What does it mean ? ;)
363
Water / Re: Slow flow pump recommendations?
« Last post by JW on March 01, 2024, 02:03:34 AM »
details about Dan F's solar pumping system
https://www.otherpower.com/danf_waterpump.html
364
Water / Re: Slow flow pump recommendations?
« Last post by JW on March 01, 2024, 01:51:25 AM »
see this is off grid stuff
365
Water / Re: Water storage tank
« Last post by JW on March 01, 2024, 01:41:46 AM »
At Night The Cure 13.02.08 Forum Danmark

366
Water / Re: Water storage tank
« Last post by JW on March 01, 2024, 01:26:22 AM »
367
Wind / Re: MOVED: How to determine the lmits of a coil / magnet configuration
« Last post by JW on February 29, 2024, 11:01:45 PM »
368
Wind / Re: MOVED: How to determine the lmits of a coil / magnet configuration
« Last post by JW on February 29, 2024, 09:11:53 PM »
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-10/three-phase-y-delta-configurations

https://www.fieldlines.com/index.php?action=post;topic=150887.0;last_msg=1064128

https://www.fieldlines.com/index.php/topic,150846.msg1064130.html#msg1064130

Audioslave - Like a Stone (Official Video)


US F-35 at Full Vertical Thrust Vectoring During Helicopter Style Landing




Ministry - N.W.O. (New World Order)


As a member of GenX WW3 is coming

US F-35 Firing Hidden Missile from its Super Advanced Weapon Bays


we are more advanced than both China and Russia

369
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 29, 2024, 09:06:36 PM »
You have no idea of the possibility of what could be happening do you. Over the years I have seen uc/users install bugs and viruses. Ive seen it many times. Im not going get into this anymore. I Have Identified the bug. we have systems provided by our host that protect us. anyway you guys have never seen the attacks we have endured. Due to the closed minds here lately, I dont feel like talking about this anymore. Your safe be happy. I have regained some urls that I lost and am going to work on them. there is a huge vulnerability that materialized with brandnewbe  showed up. you guys need to relie on Flavio, im trying to get him the access he needs from the host. theres alot going on but we cannot fix it until I follow thru on the hosts identification system (user/owner). Untill we are verified by the host, they wont do anything, if there is an attack of sometype going on were helpless, untill we are verified by the host as the true owner/user we can not fix the security issue. When I started working on the web it was fun, but threats have evolved and things have changed. You try to make an SMF fORUM like this one and tell me all about it...
370
Wind / MOVED: How to determine the lmits of a coil / magnet configuration
« Last post by TechAdmin on February 29, 2024, 05:01:38 PM »
371
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 29, 2024, 04:59:52 PM »
I believe he can post now.
372
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 29, 2024, 02:36:22 PM »
Its going to take 15 days to fix Brandnewb's account

I will say this again...   WE ARE EXPIENCING A SERVER PROBLEM.

Our host will not allow us to correct the error, it is a security reason, until that's resolved I cant do anything.

Im going to leave the site up and running deletion of files are not a problem.
373
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 29, 2024, 02:21:06 PM »
Look when you're in the backend of the forum, you would see what I see. Ive seen security issues in a flash. You have the luxury of not having to deal with that.
374
Logged in diaries / Re: VAWT backyard experiements
« Last post by SparWeb on February 29, 2024, 12:22:47 AM »
Ya I blocked him from posting for 29 days. Otherwise unrestricted. We will see if he sees the light. I don't care if he comes back.

What the hell for??

You don't make any sense.
375
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 28, 2024, 08:28:53 PM »
Can someone tell me what this means?

Quote from: brandnewb
{2}And although playing with powder fields is great as was thought to me at kindergarten before I was born (yeah we role a little different here on the wrong side of the pond :)) I have these sheets of plastic that can show fields in 2 dimensions. visualizing in 3d just means moving the sheet up and down and making a video of it for analysis after the fact.{/2}
376
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 28, 2024, 06:16:29 PM »
Ya I blocked him from posting for 29 days. Otherwise unrestricted. We will see if he sees the light. I don't care if he comes back.
377
Logged in diaries / Re: VAWT backyard experiements
« Last post by Mary B on February 28, 2024, 11:16:25 AM »
I had 2 failures due to the extreme winds I get... I gave up and decided solar panels were easier! Keeping things in the air here is a major challenge. Heck ground mounted solar panels have been a major challenge with broken metal brackets from fatigue! I started with the typical galvanized metal house construction brackets to hold the wood frame together. Current iteration is now 1/4 inch thick steel plates!
378
Wind / Re: Classical US multibladed metal wind rotor....?
« Last post by MattM on February 28, 2024, 06:44:03 AM »
It must have been a temporary glitch.
379
Wind / Re: H-Darreius wind turbines ( VAWT ) !
« Last post by MattM on February 28, 2024, 06:43:12 AM »
Test post for  topspeed
380
Wind / Re: Classical US multibladed metal wind rotor....?
« Last post by topspeed on February 28, 2024, 03:39:04 AM »
Why I cannot any longer post anything in my H-Darrieus topic ?
381
Logged in diaries / Re: VAWT backyard experiements
« Last post by SparWeb on February 27, 2024, 11:46:49 PM »
I'm happy to see beginners starting out, trying things, even making mistakes and learning from them.  That's important.  Reality will teach you many lessons, but you have to test your understanding of reality sometimes.  Smarty-pants like me, can only explain so much.  Nature is the best teacher.  The rest is up you you to figure out.  That's the point of DIY - do-it-YOUrself.

I find that a word or two of encouragement can go a long way, too.  It didn't take much to keep me going.  My first attempts weren't successful.  I did some bone-headed mistakes.  It was safe to share the stories of failure, and the others (at the time) steered me straight again.  I've come a long way, but I still don't know everything.  In so many ways (so many ways!) I'm still learning and trying new things.  So if that makes me a "noob" still, then I would wear it with pride.
382
Wind / Re: Report KD 718 about 16-pole PM-generator available
« Last post by Adriaan Kragten on February 27, 2024, 02:43:48 PM »
I'm pretty sure it's a Nema frame size 132M. 

Motor frame sizes lots of times have a letter suffix attached.  My 5hp is a 256U

213T is a common one for more modern motors. 

I read through this post from the start again.  I really love the progression of the thoughts and ideas.  In my opinion, it gets better with every new iteration.  I think i could pull off the machining on such a magnet rotor with just my lathe and shaper, plus a dividing head which i happen to have.

The magnet cost has become a way bigger issue, and the 3mm thick magnets are extremely helpful to keep that cost down. 

Reusing the original stator winding also keeps the cost down, and is a no brainer if it is intact.

My guess is that a complete generator for a 3m diameter turbine could be built for maybe $150 in magnets and whatever you can scrounge a motor for.  They are quite often almost free. 

I wish I needed another turbine.  I would be all over this.

The magnet costs are very low for the magnets used in these generators. I even found that the costs of neodymium magnets have been reduced a lot during the last year. Not only chapter 6 and 7 were reviewed but I have used the February 2024 magnet costs in all other chapters of KD 718. The original 16-pole generator with magnets size 40 * 15 * 5 mm has magnet costs of about € 41. The 32-pole generator as described in chapter 6 has magnet costs of only about € 27 because the used magnets size 40 * 7 * 3 mm are relatively cheap. I expect that these two generators can be used for the 3-bladed VIRYA-3B3 rotor with a rotor diameter of 3 m and a design tip speed ratio of 6.5 (see report KD 484). The generator as described in chapter 7 has magnet costs of about € 70 because the used magnets size 40 * 10 * 5 mm are also relatively cheap. It is expected that this generator can be used for the 2-bladed VIRYA-4.2 rotor which has a rotor diameter of 4.2 m and a design tip speed ratio of 8.

Compared to my older VIRYA generators with inclined 10 mm wide magnet grooves in the armature and a stainless steel shaft, these new generators are also cheaper because the original motor shaft can be used. It might even be possible to reduce the diameter of the origional short-circuit armature and glue an iron pipe to it. So if the correct pipe is available, one doesn't need a heavy iron bar for the armature. If you compare the magnet costs of these generators to the magnet costs of axial flux generators with the same maximum torque level, axial flux generators are much more expensive. This is because you need thick magnets to get an acceptable flux density in the large air gap. An extra advantage of these generators is that the housing is fully closed and this protects the winding and the magnets against water and dust.
383
Wind / Re: Report KD 718 about 16-pole PM-generator available
« Last post by Adriaan Kragten on February 27, 2024, 01:57:21 PM »
The new chapter 7 now describes a 32-pole generator using the housing and winding of 4-pole asynchronous motor frame size 132M.
Adriaan;
132M !? maybe a mistype of AI auto-correct . My best guess is it was meant to be 132mm.
I could be wrong

Very nice update to the chapter otherwise!! I can easily see how the staggered magnets will help with the lowered cogging

Cheers
Bruce S

Frame size 132 means that the distance from the heart of the shaft to the bottom of a foot B3 is 132 mm. For most European frame sizes, motors of a certain frame size are availble as small (S), medium (M) and large (L). The stator stamping has the same shape and the same inside diameter but a different lenght. So a motor frame size 132M has a medium length of the stator stamping. This length is 170 mm for the chosen motor.
384
Wind / Re: Report KD 718 about 16-pole PM-generator available
« Last post by bigrockcandymountain on February 27, 2024, 12:47:27 PM »
I'm pretty sure it's a Nema frame size 132M. 

Motor frame sizes lots of times have a letter suffix attached.  My 5hp is a 256U

213T is a common one for more modern motors. 

I read through this post from the start again.  I really love the progression of the thoughts and ideas.  In my opinion, it gets better with every new iteration.  I think i could pull off the machining on such a magnet rotor with just my lathe and shaper, plus a dividing head which i happen to have.

The magnet cost has become a way bigger issue, and the 3mm thick magnets are extremely helpful to keep that cost down. 

Reusing the original stator winding also keeps the cost down, and is a no brainer if it is intact.

My guess is that a complete generator for a 3m diameter turbine could be built for maybe $150 in magnets and whatever you can scrounge a motor for.  They are quite often almost free. 

I wish I needed another turbine.  I would be all over this.
385
Logged in diaries / Re: VAWT backyard experiements
« Last post by Mary B on February 27, 2024, 11:43:08 AM »
I'm trying to wrap my head around your thoughts, JW.  Are you striving for better english speakers?  Because when it comes to actual trial and error projects, that is what drove this place 15 years ago.  Your coloring of brandnewb's work as something less is confusing because he has been breaking the project into separate subjects for the purpose of tackling individual issues.  I have not seen any of his work to be simple or undisciplined.  He is testing using scientific methods.  That was how the site has worked all along.

I think JW would like it to be condensed into the user diary section where it would be easier to follow instead of a ton of separate posts...
386
Wind / Re: Report KD 718 about 16-pole PM-generator available
« Last post by Bruce S on February 27, 2024, 08:40:21 AM »
The new chapter 7 now describes a 32-pole generator using the housing and winding of 4-pole asynchronous motor frame size 132M.
Adriaan;
132M !? maybe a mistype of AI auto-correct . My best guess is it was meant to be 132mm.
I could be wrong

Very nice update to the chapter otherwise!! I can easily see how the staggered magnets will help with the lowered cogging

Cheers
Bruce S
387
Wind / Re: Report KD 718 about 16-pole PM-generator available
« Last post by Adriaan Kragten on February 27, 2024, 07:43:42 AM »
Report KD 718 has been reviewed again. The old chapter 7 became chapter 6. The new chapter 7 now describes a 32-pole generator using the housing and winding of 4-pole asynchronous motor frame size 132M.
388
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 27, 2024, 06:43:11 AM »
test post
389
Logged in diaries / Re: VAWT backyard experiements
« Last post by MattM on February 27, 2024, 06:21:52 AM »
I'm trying to wrap my head around your thoughts, JW.  Are you striving for better english speakers?  Because when it comes to actual trial and error projects, that is what drove this place 15 years ago.  Your coloring of brandnewb's work as something less is confusing because he has been breaking the project into separate subjects for the purpose of tackling individual issues.  I have not seen any of his work to be simple or undisciplined.  He is testing using scientific methods.  That was how the site has worked all along.
390
Logged in diaries / Re: VAWT backyard experiements
« Last post by JW on February 26, 2024, 11:22:18 PM »
I don't know ok that its best for the site to be about high traffic new projects. We have an archive and think about such past members as Flux.

By no means are we a beginners site. Not that that's bad... but you have to study do your research.

Im sorry but the post i was reading from Sparweb is advanced as hell.  https://www.fieldlines.com/index.php/topic,150879.msg1064090.html#msg1064090
 
We dont want to turn away beginners but they have to do there homework to be here, otherwise its a waste.
391
Logged in diaries / Re: VAWT backyard experiements
« Last post by MattM on February 26, 2024, 10:29:15 PM »
When I visit my focus is on recent posts.  I've watched most of the posts form from the first days, sure, but recent posts are new information.  Your posts are there.  Not sure anybody really digs through old posts except to revisit memorable ideas.
392
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by JW on February 26, 2024, 05:38:57 PM »
Today I put in over 5 hours into lets call it server work. I'm very nervous because when Flavio talked to me about our issues there serious. At the end of the day its very frustrating. We have to fix this issue. tomorrow I have to start over again. I have two other projects running as well. Our site is very sophisticated if you get frustrated even then you must be careful. Its amazing we have made it this far.

Once the issue is resolved things are good and you dont have to worry about it. Im just not there yet.
393
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by JW on February 26, 2024, 03:10:20 PM »
Quote from: brandnewb
I so am hoping that this is just all a misunderstanding of the greatest kind.

Look buddy this isn't Mary Poppins land.

I own the forum and have been building it piece by piece for over 22 years. Im not going to get into what type of user you are. The thing about the iron filings on paper it appears you never read that. You need to find another forum to patronize yourself. so far you have ignored intelligent conversation.

Im going to ban you from posting for 30 days. The other Admins can reverse my decision with no prejudice...

JW

Right now me and TechAdmin are working on some technical issues that are very important. I takes alot to keep this place running, we had a massive complete outage for two weeks not long ago. Although we were lucky the database is in good health so for the next week im putting in 30hrs with our current host, they changed something its not good.
394
Logged in diaries / Re: VAWT backyard experiements
« Last post by brandnewb on February 26, 2024, 03:04:32 PM »
I am not sure gang how I should take this all.

Now most of the gang here are cool and collected and I really wish to meet you all once in real life and then shake hand and give a knod of appreciation.

Yet recent developments make we second guess if I am still in the right place.

And when we think about it it is all so relatively simple.

treat each other with respect and then the world will be better.
395
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by brandnewb on February 26, 2024, 11:05:54 AM »
yes indeed, and my stance is that stacking coils will be beneficial as opposed to transitionally spaced coils.

So either in this great database is examples on why to or why NOT to.

But since the search feature has been lacking behind of the users intend I can never know for sure. So then I feel like it is my duty to just keep going to see if this all has any merit.

If my thread is taken out of public notice it feels like what is it we are trying to cover up

Look gang I realize that I am realty sounding ill tempered at the moment. And that is because that is how I feel at the moment.

I so am hoping that this is just all a misunderstanding of the greatest kind.
396
Coil winding / Re: How to determine the lmits of a coil / magnet configuration
« Last post by Mary B on February 26, 2024, 10:50:56 AM »
It's Ok JW,

I actually kind of like it how you are able to give a new spin to my avatar name from time to time. It signals me that you no longer believe I am an actual newb.

But please do trust that I have no credentials what so ever in this field yet.

Yet rest assured I will have once all is said and done.

Anyway I tried uploading the stacked coils image again for context but this "the path can not be empty" error is still preventing me from doing that :(

Given I make no secret of also posting elsewhere shall I just share a link to there? But it feels rather disrespectful to divert traffic from this great community to another. So that is why I have not done that yet.

upload them to imjur... share the direct link... it acts as a backup if a post here gets corrupted...
397
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by Mary B on February 26, 2024, 10:48:29 AM »
OK JW so it was you.

Sure you can do what ever it is you want. It is your prerogative and you have deserved that!

But one strong mind against another.
You are hurting my cause. and to a smaller extend that of the greater good.

Let me challenge you then in a good way.

I think I can overrule/or at least confirm by now like 70% of statements that are made by people that have already garnered your trust.

I think it would be only fair if we would as a community see how my ideas are either sound or flawed. And then when sound focus on how we can get a setup ready that can demonstrate/debunk said ideas.

You see JW? Our interests are actually aligned. It is just that I made a false start here and you can't seem to let go of that.

I am here to serve the interest of humanity JW. I would really love for your support on that.

And although you have gotten every right without the need for any explanation. I think you should reconsider your decision.

There hundreds of years total of experience on this forum... we have seen it all... physics has limits and rules...
398
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by brandnewb on February 26, 2024, 09:48:51 AM »
OK JW so it was you.

Sure you can do what ever it is you want. It is your prerogative and you have deserved that!

But one strong mind against another.
You are hurting my cause. and to a smaller extend that of the greater good.

Let me challenge you then in a good way.

I think I can overrule/or at least confirm by now like 70% of statements that are made by people that have already garnered your trust.

I think it would be only fair if we would as a community see how my ideas are either sound or flawed. And then when sound focus on how we can get a setup ready that can demonstrate/debunk said ideas.

You see JW? Our interests are actually aligned. It is just that I made a false start here and you can't seem to let go of that.

I am here to serve the interest of humanity JW. I would really love for your support on that.

And although you have gotten every right without the need for any explanation. I think you should reconsider your decision.

399
Logged in diaries / Re: The moving of topics wouth auther consent
« Last post by JW on February 26, 2024, 09:16:09 AM »
Hi branubie,

This is a privately owned site, we can do anything at anytime. I was going to do this earlier but the content of your posts are diary's. When other users try to engage you it gos over your head and you keep doing your dictations. when you are on the open forum your making content that does not fit. And are crowding the open forum. ALL the other users have proven themselves. You have not. when you post on the open forum we expect you to not do what your doing and crowding the main page. Sorry.

JW
400
Logged in diaries / The moving of topics wouth auther consent
« Last post by brandnewb on February 26, 2024, 07:58:13 AM »
especially in my case I would have respected some kind of heads up yes?
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