Another Self-Furling Windmill Vane Design - very simple!
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- Опубликовано: 10 сен 2024
- Self regulating windmill sails are a must for any prospective windmill designer - and there seems to be a few ways to do it...
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Mount a camera on the hub looking down the arm. No blur
Excellent idea - thanks!
You are blessed having ao much space to build all these projects. Most of us just lack enough room for it.
Still hoping to find a a nice farmer's 🚜 daughter with a big barn
I love these simple mechanical solutions for creating negative feedback loops.
You could have gone trough a bout of covet, its still around.
I am glad you were able to take some ideas from my photos, your personal twist in the concept is very interesting! My guess is that with added size and weight, the wings will spin at much more constant rpms due to the mass inertia. Also I hope your health will return to old strength very soon!
There's a design where the tail of the wind turbine folds so that at high windspeeds the fixed blades swivel to turn them to a shallow angle in relation to the wind
This design is common on the Great Plains. The fan is rotated until it presents its edge windward. The thing that has always puzzled me about Americans and windmills is that they are so resistant when it comes to using mills to make electricity.
Lucas made such a wind turbine that's fantail turned to move the sails from the wind.
How delicious to have some handy wind to blow things round and round.
The centrifugal chain governor is a wonderful use of what's lying around in the workshop. It looks like it's working very well (from your final demonstration) with the wide fins.
I love listening to your explanations, Tim. Such a warm, friendly voice 😊
I personally like the more modern Dutch windmill sail design with venetian style wind sails. Each wind sail has many louvers set in a frame with a connecting rod linking the louvers together so that they all open and close in unison just like the the window blinds. The rod runs the length of the sail frame to a weighted governor arm at the central axel, the faster the rotation...the more the governor pushes the connecting rod which opens the louvers allowing the wind to flow through thus decreasing the surface area.
Do you have any drawings Mr MacGoover please?
Get well soon Tim 😊. Id love you to make the windmill drive a compressed air pump to charge your garlic railway locomotive. Wind powered trains would be amazing.
Hi there we have a wind turbine at the end of the road and the sails are at the back of the tower. Like a flag on a flagpole. The blades are held at 90' to the shaf with a spring and when the wind is too strong they start to fold back reducing the blade aire and reducing the speed of rotation. With this design the hole blade swings on a hinge and just has a spring as the controller.
I like it! Thanks
Someone already mentioned the system with the steering fin to control the general direction of the main rotor. If seen a windmill roundabout the sice your aiming for on top of an building here in germany. It had two stering fins and some steel ropes with weights. I just couldn't figure out how the mechanics work over the distance.
Maybe the fins flap togeher dew to the wind pressure, defined by the weights. Gravitational force is way more constant than springs or rubberbands.
Another idea would be an eddy current break. Some strong magnets near a steel disc. The faster it moves the stronger the breaking force will be. They use it on severel hundred ton heavy trains 'couse it has no mechanical wear and all the energy will be lost as heat.
Arrange the flap to move away from the wind against a spring tension so that the wind blows the flap out of the way when the wind is too strong.
I think it is many roads to Rome, but in the end it is the materials you have laying on the ground somewhere that decides how it finally will be
If you want to add more weight to the center of the chain then go to your local tire changing garage to see if they any stick on weights they can sell you really cheap or for free. Just put a small rectangle bit of steel on the inside of the chain link & stick a weight either side of the chain link so it sticks to the center steel weight & also covers both outer chain links so it can't fly off.
Love your vids. To heat water directly from the windmill, how about just getting a regular boring shop air compressor, cover the cylinder with insulation, and then connect the hot exhaust air to a radiator,. Then flow water around and through the radiator to heat the water? Keep the air pressure (and therefore hot air temp) inside the radiator pipes. Hopefully, the radiator wouldn't leak. The windmill would drive the air compressor...👍👍👍
Interesting idea - but where would the exhaust air end up? Wouldn't it take a lot of heat with it?
@@wayoutwest-workshopstuff6299 The air compressor is connected to the radiator (heat exchanger). You would transfer the heat in the radiator to the water to make hot water. This would cool the air in the radiator and when it was exhausted it would be cold and you would have to exhaust it to the outside. Does that make sense? I love your vids!!! Have you ever felt an air compressor working? it gets hot, I'm saying use that heat to heat your water. Air compressors have cooling fins to literally get rid of heat caused by compressing air, I'm saying use that heat. The windmill can drive the air compressor. !!!👍
@@wayoutwest-workshopstuff6299 You would have to keep the radiator pressurized and have a very small hole to exhaust the air at the end of the radiator. Keeping the radiator pressurized will keep the air inside the radiator hot. when the air exhausts out through the hole at the end it will become cold because it will change from high pressure to low pressure so the exhaust air will be cold, also you will have extracted the heat out of the air too to heat your water... Does that make sense? Air compressors have cooling fins on them to literally get rid of heat. I'm saying use that heat to heat your water. the windmill could drive the air compressor. the radiator makes an efficient heat exchanger... 👍👍👍
The principle is to use the heat from compressing air...👍
I put a compressor under the drill, underwater, two weeks. ago I think the principle is sound but I couldn't get much heat out of it. I should make a video of that too, but I'd rather put up things that actually work
On the svseeker channel Doug has built/rebuilt his hundested variable pitch propeller 3-4 times which has a simple mechanism for varying pitch accurately and evenly between the blades. You might consider something like that because (particularly in high winds) you will want your blades equally pitched. In the event of a breakdown and/or high winds you will need a way to feather your blades and "park" your turbine.
at 3:30 when you were trying to see whether the weights on the blades were working, I was thinking maybe you could mount a small go-pro or something to the hub of the windmill, filming one of the blades as the windmill rotates (if you have a camera small enough to attach that way). This perspective would allow you to clearly see and more accurately gauge how well the weights are working and compare different design ideas.
Excellent idea - thank you
Whatever challenge arises, I really enjoy Tim's inevitably cunning solutions :)
Keep working on the blade designs, Tim. That is going to be the best method once you get it where you need it. Brakes create heat and wear, so that's no good. Passive speed control is the way. Cheers 🇨🇦
Nice ideas. It remindes me of regulating valve on steam engine. It has weight too. As it spins faster, it closes the valve.
What a nice surprise to watch Tim and Sandra one of our favourite channels and people.We will watch when we sit down after a long day so lovely to see.We love Ireland and Ireland’s so much.Till next time.🥀🥀🌹🌹🌹🌹💐💐💐💐💐💐☘️☘️☘️☘️☘️☘️🍀🍀🍀🍀🍀🍀🌿🌿🌿🌿🌿🌿🌿🌿🌿🌝🌝
Reminds me of the speed governor on a wind up gramophone
nice work. hope you get back into more garden railway stuff this summer. using some small pipes you should make a whistle for Tornado.
A few people here have suggested a single weight and mechanism (at the hub) governing all the blades, which would bring the advantages of simplicity, weight minimisation and eliminate a lot of vibration and balance issues of multiple mechanisms, out near the circumference. With all those chains whizzing about at the end of the vanes, it will want to pull itself apart with the very forces you are using to change the angle of attack. Can't wait to see your final solution.
Do you have any drawings though, Stephen?
@@wayoutwest-workshopstuff6299 Not yet. 😁
But I’m scribbling stuff down with pencil and paper. It’s a nutty one. I’ll send you my thoughts when I have something approaching sensible.
Great to see that the spirit of enquiry and invention is alive and well. 'Even now there are places where a thought might grow' as the Irish poet wrote.
invention? he's replicating 19th century technology
Nice mechanism, it’s going to load up in a storm though , make it strong.
I just love that you get help from around the world with your projects. Gives me joy to see how you implement the designs.
Add a 10mm or 12mm bolt to the centre of both chain .a longer bolt so you can add more nut if more weight is needed
You've made a propeller in reverse. Some aircraft have constant-speed propellers that can turn themselves straight into the wind (called the "feather" position). You should be able to do that with this design.
Ingenious solution! The best ones are often the simplest. I was thinking of a regulator style apparatus linked by gears to an expanding concentric disk that pushed the sails into a more open position, or open windows on the sails to reduce the area. (Think that makes sense). Another alternative would be fabric sails with a tensioner that is relaxed when the centrifugal force increases, thus reducing the "grab" of the sail.
Dang I had that a couple weeks ago, took two weeks before I woke up feeling decent
Wow that looks like it works really well! Hope you feel 100% soon Tim!
Reminds me of a fly ball govenor on a steam engine
I think it's worth a "Like" as with all Tim's videos 🫡
Get well soon Tim!
I'd suggest building a test rig tower and have on wind speed and rpm sensors and leave it running for a week.
make sure the windmill has a good system to always point forward or it will run unregulated until it overrotates and destroys itself
I think its wonderful to take from existing ideas (proven ideas) and make them into your own. Always enjoy your videos. Greetings from The Netherlands.
What do I think? I’m just glad there’s no test and otherwise I’m in awe
i have finished my design for an 1880's buckboard style electric assist horseless carriage! thankyou for inspiring me!
sounds great - videos please : - )
Nice idea. It would not get grippy. 😀
Yes additional weights in the middle of the chain might help adjust the speed you want.
Would a curled thin bit of carbon steel work the same? Like an old hand saw blade that would flex in high winds.
Dear inventor Tim.
Hope you will be well soon, Sir.
2) 👍👌👏 Quite an interesting attempt/solution. Congratulations 🎉 2) I guess that the movable metal chain will unfortunately wear out the panels and fastenings slowly but surely. Maybe centrifugal force weights can help or you simply need something like a big fan clutch/AC compressor (from a lorry for instance) to slow down the windmill sails/wings. Or the speed could be controlled by the generator = the faster it wants to go, the more the generator grabs and takes away spinning power. I guess that's how the big wind power generators work (plus a centrifugal brake on the axle).
3) Good to see that your pedal car attracted a lot of attention.
Thanks a lot for making teaching explaining recording editing uploading and sharing.
Best regards luck and especially health to all of you.
Thanks Chris. The chain could be arranged so it doesn't touch anything though..
@@wayoutwest-workshopstuff6299
How?
Hope you get better soon, very interesting and you can't go far wrong looking back how things were done in the past maybe improving ware possible because of new materials or technology.
I think, ya probably more cranky than I am 😉😉😉😉........... I started building a windmill many years ago, the sails were made from mild steel sheet,(because it was free) but it all got quite scary as it was about 8' diameter, I never got as far as controlling the speed though... good luck with ya build 👍👍
You could develop a vertical design made with large scoops. With a brake disk governor. A bicycle disk bake and the same stream engine balls governor.
The center pole extension high enough so three anchor cables for stable strength.
As always good luck with your projects. Get well 😷👍🏻
I think I prefer the first idea. Perhaps you could look at solving the friction issue with some bearings or lubrication?
You have a nice voice sir! A friendly and pleasant person you sound 😂
Great idea. Simple and effective
Wish you better health!
Interesting
Get well soon. Good bizzy.
Much simpler than the system i have seen which uses a complicated set of levers and bell cranks (spider) that open or close the louvers by a chain with a weight attached to it.
Interesting approach, Looking forward to the final result.............>
Simple is often better.
Rubber band can always be replaced with steel spring, for scale ability, durability and same function.
As ever, excellent stuff to see you exploring these mechanical principles.
I love how quite often something starts off really quite complicated and bit by bit gets refined to a deceptively simple solution, which is, as we know, the hardest to acheive!
Hope you feel better soon Tim, sending best wishes from East Sussex, England.
By the way, nearly fell off my chair when I saw you had blue skies! I didn't realise you did those in your neck of the woods.
Hope you had a grate day at inishanon steam rally
I did!
Even when you are sick, you are brilliant!
Absolutely brilliant!
Cunningly ingenious ....... is what I think!
Looks like it needs a flywheel to keep it from slowing as the wind gusts
I had an illness, it left me deaf in one ear for 18 months + or -, it turned out I had long Covid.
Good luck, get well soon.
Yes, that's what the doctor calls it too. Glad you got there in the end.
Your on the right track
Hope that you are feeling better now mate
Love all the projects you come up with!
The rubber band won't work in the final version, you're going to want a spring or something that stands up to the elements. Bravo! Feel better and keep up the work. -ps don't forget about the railway...
I think if you install a flywheel, the movement will be even more even
Using the centrifugal force to close it down and thus slowing it down, is a good idea. Maybe the chain is enough, the less parts, the better.
Thanks Tim 👍💪✌
It's so wonderfull to see your channel grow! I'm so exited to see the new windmill :D
Great vid, get well soon
Thanks for posting
Best wishes for speedy recovery.
Thanks Tim 😊
Gute Besserung Tim! ;)
Thank you. Get well soon.
Brilliant Tim!
Instead of the chain, what about a small length of threaded bar set into the blade with a "donut" shaped weight on it that you could adjust in and out to fine tune it ?
TBH, when I built my small windmill, I just went with a furling tail and it was fine.
I'm thinking that my 20' windmill will be too big for a tail like that, though?
*I ❤️ WINDMILLS*
If you experiment with the angle of the blade, you can adjust it to stall at the desired windspeed/rpm without any mechanical devices and the blade won't spin any faster.
That sounds good - thanks. So I just keep trying different angles until it works? Presumably the down-side is that it's not at optimum pitch most of the time?
I've been ill too - don't the jobs pile up! Hope we both get back to 100%.
Might be worth trying it without the chain, so that you can compare the results.
I should have filmed that part too - it just got faster and faster and too wobbly to hold
Tim have you thought about a battery powered locomotive for your railway? You could charge it with the windmill and it would have a lot of torque in a compact package. For a person like you that would be a quite easy project as well i think, i mean you build an air powered locomotive.
I can't provide links or anything but there are lot's of video's of homebuild electric locomotives.
Warm greetings from The Netherlands!
I'd love to build one - just can't do everything so I have to leave some things out - for now!
@@wayoutwest-workshopstuff6299 Oh yes wasn't talking about dropping everything and building a locomotive now ofcourse, everything at due time!
❤
looks good 👍
Kris Harbour built a wind powered generator.
The simplest self regulating for a windmill is to have the tail on a pivot and off center of the axis of the windmill blade hub and use a spring to keep the blades into the wind strong wind pivots the blades out of perpendicular turning the blades away from the wind this is the most common mechanism that the most common windmills like areomotor and demster used my favorite windmill design is the railroad eclipse windmills used in the American southwest to supply water to rail road water towers the state of Texas historic building survey made blueprints for the cannon ranch eclipse windmill back before it was retired and moved to the national ranching heritage museum
A tail in a 20' diameter windmill would need to be huge though, and I don't think it could cope with the constantly varying direction very well
@wayoutwest-workshopstuff6299 🤔is your wind not very constant across the pond because vertical axis is best for that, I was intending on eventually scratch building that eclipse myself because I want to run a air pump off of it so I can use the same pneumatic ceiling fans that my Amish friends used to use in their business before they went to solar powered fans around my farm
I hope you have fully recovered from the flu. It can be quite debilitating. I love the trial and error approach, coupled with your ingenuity and innate sense of adventure , it is always fun.
Looks great but how will it work under load.
That darn flu. Best wishes x
I love steam stuff, annoying its in Ireland tho. I live in England and so cant go to it. :/
I think this second solution is a lot more robust becouse of the less friction.
I am always wondering if you really need a *self*-regulating windmill, or if you might want to regulate the windmill from the outside anyway? That way you could have a lever that would do the same (e.g. using rotation weights) but can be adjusted and easily reduced later on. If you put the mechanism into the blades, you're optimising already at build time. I am no windmill expert though.
YOu're right - that would be nice. But do you have any drawings, Patrick?
@@wayoutwest-workshopstuff6299 What you're looking for is essentially a centrifugal governor (en.wikipedia.org/wiki/Centrifugal_governor) where you replace the valve with a lever to a collective pitch control (like in a helicopter). Both are a bit complicated; on the other hand, I trust your skills :-D It is functionally equivalent to what you do now, it just adds the possibilities to test the part individually and to modify the speed while running.
Tim, can't you rely on the work you want it to do to regulate the speed? For instance the disks in water idea would increase resistance at speed. You would only need to calibrate it. Actually almost every process is self-limiting .., consider falling objects reaching terminal velocity ... but yes, that can be preceded by destructive disassembly.
I have been thinking about that, but I'd like to try things like a log-splitter too - I wonder how that would regulate the speed? And what if something broke? But you could be right. More thinking required!
If it were me, I'd put power assist on all 3 wheels of the Mott to make it uphill much faster.
then it would be illegal here : - (
Brilent the further out on army the chain the haver it is the faster it rotates the more it acts
needs dampening, otherwise a very nice idea.
How do wind pumps work? They have a tail vane at an angle to the main blades. Guessing it simply turns the axis away from the direction of wind.
Yes, but they're not 20' across, in very windy locations..
Isn't the stiffness of the hard board sail the issue with governance?
I think (not a scientist obv) that the natural fabric sail changes shape in high wind. I think that elasticity is needed in any sail. Esp one that's going to be governed by weight moved by centrifugal forces.
You could be right - but this small one worked with stiff sails fine..
What do we think?
Make sure you don't accidentally set a world record in wind turbine blade throw. 😄
I worry about additional rotating weight - but then I'm a cyclist.