Wind turbine placement?

I live in a rural area and we have two blue Harvestor grain silos. One has a 25 foot diameter and is 90 feet tall and the other is 4 feet from it with a 20 foot diameter and is 70 feet tall. I was wondering if it would be possible to mount a wind turbine on top of the taller one. I don't know much about turbulence though, if there would be too much? Or how high it would have to be off to clear the turbulence? This is my first try at it, I was going to try a treadmill motor, something small

Topic by technic6490   |  last reply

Wind harmonic generator?

I had this idea a while ago. There's a nylon strap strung between two trees. It's let's say 2 cm wide and 5 meters long. A strong wind is blowing across it so that the strap is resonating, displacing through, say, 20 cm at 10 Hz. What is the maximum power involved? If you had one or more wire coils running the length generating current, what kind of efficiency over all could you expect? I'm thinking of this as an ultra cheap and easy means of wind generation.

Topic by SolarFlower_org   |  last reply

is a bodine motor good for a wind generator

I am thinking about buying a bodine motor for a wind generator it has 1725 rpm and it is 90 volts. here is a link for a picture of the motor!

Question by funny1048   |  last reply

wiring a diy stator ? Answered

Hello, I making a wind generator but I want to know what wire gauge to use to get high amps, and how to reduce cogging. Also want to know if I can make my wire coils with double wires, if can, can I connect one in the delta config. and the other in star,  want to know if it will work. It is a 9coil stator and 12 magnets. Thank you.

Question by Emett   |  last reply

How to source components for a DIT VAWT?

I am living on the Atlantic coast of a Caribbean Island and need to set up a VAWT with a capacity of 1 to 2 KW to charge batteries for my cottage.  Can anyone point me to a source from which I could source the necessary components, none of which are available on island.

Question by carlduncan   |  last reply

possible ac motor generator?

Anybody tried machining strong magnets into the armature of say 10 or 20 hp 3 phase motor. do not  know the output if any but if so then running through a transformer that might have output  of  220 that is actually useable for living, working in a garage. i understand it would have to be overdriven  possibly by multiple blades for torque to reach the ness speed. just curious if you think it might work or not be worth the effort. this is a new field for me.

Question by builditbigger   |  last reply

Home automation & Home door sequrity including one android apk file project available ???

Please help me for this project. how will be arduino program code , which pin are connect to apparatus to apparatus. please give me all description step by step this project implimentation. Project planning:-                   1.Home automation & Home door sequrity including one android apk file.                   2. 4 Relay:   1. Blue led light.                                 2. Red  led light.                                 3. White led light for bath room using PIR sensor.(this light switch on/off only using pir sensor,                                            because-wet hand electric shock on switch or, damged mobile display).                                 4. Fan using voltage regulator.                                  note:- light switch on/off & fan switch & voltage regulataor incease/decrease including appk file.                   3.Home squrity switch board on/off may be   a.display board on wall of house.                                                                b. display in android apk file.                   4.when open door with corect srquirty,then photo upload in memory card.if incorect password then a lout of sound.                   5.when fire in house ,alarm using gas sensor. Room temperature, huminity show in display. Apparatues:            A: Led light on/off by mobile app.                  1.ESP8266 Serial Wi-Fi Wireless Transceiver Module for IOT.                  2.Generic(unbranded )4-channel relay control board module with optocoupler, 4 way relay module for arduino                  3.Arduino Uno R3 ATmega328P ATMEGA16U2 Compatible with USB Cable.                     or,xcluma Atmel Atmega 2560 Mega2560-16Au (16 Mhz) R3 Board+Usb Cable For Arduino.                  4.Led light 3(Blue,Red,White for Bath room),Motor Fan.                  5.REES52 REES_2 Bread Board or Solderless Pieces Circuit Test Board Project Board.                  6.Jumper Wires Male to Male, male to female, female to female.                  7.Generic KG001 HC-SR501 PIR Sensor Pyroelectric Infrared Module 2pcs(for bath room & door open).                  8.Adraxx LM7805 7508 Positive Voltage Regulator IC, 5V 1A.                  9.Resister 1k ohm.                  10.REES52 MQ2 Arduino Compatible Gas Sensor, Methane, Butane, LPG, Smoke Sensor.           B: Home sequrity.                  1.Quantum QHM495LM 25MP Web Camera.                  2.SanDisk Ultra MicroSDHC 32GB UHS-I Class 10 Memory Card With Adapter.                  3.REES52 621033926893 Universial 16 Key Switch Keypad Keyboard Fit for Arduino by REES52.                  4.Silicon Technolabs 20x4 Line LCD Display With Blue backlight HD44780 for ALL Arduino,Rasp Pi,AVR,ARM,8051 (Blue). Software:      1. Arduino-1.8.5.                2. wampserver & notepad++ (for php web page).                3. Android Apk file.      please help me for this project. how will be arduino program code , which pin are connect to apparatus to apparatus. please give me all description step by step this project implimentation.  i will waiting for you.

Question by somnathpanjaproject2018   |  last reply

wind-up radio for bike?

Has anybody thought of the idea of using those freeplay wind-up radios to use as a dynamo for a bike? So you can power up your lights, charge your ipod or even more.

Topic by markldn 


The machine should be able to wind a filament or wire around a beam structure that could measure 40 feet long by a diameter from 5 to 40 inches. A mechanical tensioning system portable and compact for supporting and dispensing fiber filament or wire, to the filament winder with a standard tension range from 1 lbf to 10 lbf. The winding around the beam such be done silmultaniosly in a criss cross pattern to a 45 angle degree. If interested in helping me with the design, my options are open to discuss terms. Please contact me if more information is needed. thank you, munsangv

Topic by munsangv   |  last reply

Wind Turbine from a cordless drill?

Hi guys i have come across an old 18volt drill. i connected it to some small pvc blades about 12 inches long in the hope of generating some small amount of power. Pointed it into a reasonably stiff breeze but the blades wont turn due to the gears of the drill. Anyone out there got any ideas on how to make this work.  is there any way to free the gears so it turns easier or any advice on what size blades would be required to turn the motor. Any suggestions would be appreciated. sam301

Question by sam301   |  last reply

I wish to make vertical wind turbine for 6kW generator, any suggestions about wings for it ?

We are trying to make wind turbine, to pace it on the roof, could be few of them, but reasonably big, if you know what i mean. Thanks

Question by azdanovica   |  last reply

DC Motor

Hi Guys, I have a 15.6 volt dc motor taken out of a handheld vacuum cleaner. is this suitable to use in a small wind generator as a project with my kids. when i attach it to a power drill and spin it from the shaft i dont seem to get any power generation. If i connect it to a 12v battery is spins real fast. any help would be appreciated sam

Question by sam301   |  last reply

Induction Motor Help?

Hi guys i have come across an induction motor out of a treadmill. it states on the lable that its single phase induction, 240 volt, 4 poles 3/4 hp. 1.7 amp 1420 rpm. question 1- is there any safe way to see if it works question 2 - can it be used for a small wind generator to charge 12volt batteries to light a shed question 3 - is best put in the trash where it came from any assistance advice would be appreciated

Question by sam301   |  last reply

where to find thin wall plastic tube?

Hi, I'm building a wind tunnel, and want to achieve a more laminar flow. I've tried drinking straws but they seem to stop the air flow too much. So I made a much larger bore honeycomb with toilet roll tubes. That worked a lot better, so now I'm after something a little better looking. Does anyone have any ideas for where to source a few meters of thin wall plastic tubing? About 25mm -> 35mm diameter. Transparent would be ideal. Thanks!

Question by matthewvenn   |  last reply

12V DC Motor Wind Turbine

Hi im trying to build a wind turbine.The purpose of the wind turbine is to determine the maximum amount of power it can produce with different loads. It needs to produce at least two watts of power during testing, I tried using a potentiometer but it started smoking. I need to record voltage, current and power. I needed to know how to set this up, and if I can use resistors instead of a potentiometer. I have power supplydmmresistorsblade12V DCWires

Question by hj212121   |  last reply

PVC pipes and winding Tesla coils....

There are still people out there playing with high voltage.And one big problem when it comes to Tesla coils is winding the secondary coil.Now, I won't go into the details and options of the actual winding part, instead I would like to share some tricks that might make things easier for your project.Whether you wind fully by hand or make use of some mechanical winder, magnet wire is a very slippery thing on PVC.For that reason and some others we usually wind as tight and close as possible.Any leftover spaces that you find after the winding is finnished will severly compromise the overall tension of the wire in this region if fixed.Next problem is what many call aging.No matter how good you coat your coil with varnish or paint it will start to degrade over time.I found a simple fix for these problems :)Well, not really that simple but I am too lazy today to make a full Instructable for just an addition that everyone can make in a few minutes....Let me start with idea behind it all:I noticed that no matter how thick the pipe or wire is that there is little to no chance at all to get any of the coating material through the wire and all the way down to the PVC.One coil failed after I abused it so I did some cuts and had a close look with a magnifying glass.The coil itself was really good covered but it was like a sleeve that sits on the PVC with nothing on the underside of the wire except for a few single spots.Some people will now say to just a much thinner mix for the coating to allow the stuff to sweep through but that does not always work.One big issue I noticed is that not all paints or varnishes actually stick to PVC.Especially those non smelling eco friendly ones most places now sell.This means when the coil expands due to the vibrations and heat the wire can simply rattle off the varnish or the coating itself can crack under the stress.So I thought there must be a way to fix this right at the winding stage....PVC is a good insulator too!So why not use PVC instead of messing with other things?My first attempt here works quite well with thin wire and goes like this:Go outside with your winding rig and have a bottle of PVC primer and a little brush or sponge ready as well as some gloves.If you have use a friend, if you have none make a small rig to hold the sponge right in front of your winding area.The key is to keep the sponge wet with the primer so it will wet the pipe properly.Best is to have the speed and distance set so the surface just starts to dry off under the wire.The primer will cause the PVC to soften, so the wire slightly sinks into the surface.An automatic winding rig is best here as it allows for consistency.There is no too much or too little here is nothing drips terribly and your wire sticks without fully sinking in.Once done you can cover the winding with your prefered coating.For thicker wire, lets say 0.3mm or thicker, I now use a similar way but with more preperations:Using some very rough sandpaper on a belt or vibrating sander I create a small pile of PVC dust.If you prefer some fancy color you can use ABS plasic here too and it dissolves in a similar way.The resulting mix should be free of lumps and of even color, if in doubt use more primer.Consistency should be a bit thinner than honey, if yours is too thin you can add more ABS/PVC or let the primer evaporate off while stirring it every now and then.To get a good start I do a few turns dry first with quite a big spacing.When approaching the actual start of the winding area I use some stick tape to make the last alignment and start to apply the mix onto the first bit of the winding area.Some lint free cloth with a bit of primer is used to wipe off any excess towards the still uncovered part of the pipe.Every time the mix on the pipe dries out too fast a brush with some primer is use to wet it.Every time the excess runs out a bit more mix is applied onto the wound area.The key is to only have a small area in front of the winding covered with mix with the most is on the winding and "cleaned" off towards the empty area.This way the entire wire is covered by PVC all around.To finnish off you simply use a brush and paint the mix onto the rotating coil until you have an even finnish.What are the downsides?The primer stinks and is certainly not healthy to breathe in. So good ventilation is a must have and it works better in colder temeratures as it gives you more time.It might require some test runs with braided fishing line or similar to get a feeling for how much mix or primer you need to apply and how much max tesion you can use to preven the wire from sinking in.Any benefits?IMHO using this method makes it possible to get a proper bond between the PVC pipe and the wire.And by using PVC or ABS as the coating there is little to no change material properties.This in return gives far less chances for vibrations or wire expansions that result in failing insulations.The whole thing just is one piece of PVC with the wire embedded in it instead of having a wire on top of the PVC with some coating above. ;)Are there alternatives to the PVC primer?If Acetone is much cheaper than you can use it but the same safety measures apply and the mix might dry a bit quicker.What if I need a break or stop the winding for one reason or another?Simply wipe off all access and stop with just enough tension on the wire so you can star again with no problems.Then start by wetting and applying the mix and continue winding as before.

Topic by Downunder35m   |  last reply

Cold Weather Bike Wind Deflector

So I've taken an indirect pledge not to commute to school VIA car - by not buying a parking decal... Since school started, I've commuted, by bike, nearly 400 miles. But now it's starting to get cooler. I really don't like riding in cold weather. I typically wake up cold, get ready (still feeling cold) and getting on a bike when it's cold out is pretty uncomfortable.... So, for my next ugly bike abomination accessory.... My first wind deflector fairing prototype. I made a model in SketchUp (this was my "learn to use SketchUp" project), then from that make a development drawing (3D shape to 2D cutout) and cut that out of some scrap cardboard (I've got quite a bit that I rescued). Yes, there are flaws in this design - it's my first attempt :p As of now, I need to figure out how to mount this thing. I currently have some surplus 1/4" threaded rod at my disposal, I'm going to grab some and see where it takes me :p Comments?

Topic by trebuchet03   |  last reply

Is it possible to convert a AC water pump to wind generator?

Hello,  I have recently salvaged a 2kW AC water pump and I was wondering if it is possible to use it for wind generator.  The pump uses 3 phase AC (well there are 3 leads, so I guess it's 3 phase)

Question by flakas   |  last reply

amount of wind (input) = number of LEDs Lit?

Good afternoon, Im making an exhibition piece that will have children working a set of bellows that are connected to a (pretend) blacksmiths forge. What I need to represent is the more the bellows are pumped the more the "embers" will glow. Im thinking a turbine tachometer that leads to an LED driver set to display as Bar so the faster the turbine spins the more LEDS are lit, or they trigger a series of LEDs to light (this thing has to get pretty bright not sure one LED per step will do it. Trouble is im good with the theory and pretty good with the practical its just the technical that is letting me down. If anyone could see there way to giving this some thought and maybe doodling a circuit diagram / shopping list that would be awesome. You can checkout some of the other things if made here

Topic by pieceorutt   |  last reply

can I use two 24 volt ac stepper motor wind generators connected together to charge a 12 volt battery

STEPPER MOTOR SAIA 24VAC 60Hz 1.5W MOD # UBR2UG4D30CNN3E       * NOS   * Model # UBR2UG4D30CNN3E   * 24Vac,    60 Hz,    1.5W   * 009,    30s,    3.9uF   * Dimension: Diameter 1-3/8” x Depth 3/4” here are all the specs i could find not too sure what they mean. i read somewhere on the internet that it would be best to use a 50 volt one, so i was wondering if i connected them to together positive to negative like in a solar panel or all the + to the + and - to the - on the battery if this would work. i know you need to change the ac to dc

Question by chocsoya   |  last reply

British Land Speed Recod Was a Breeze, Thrashes US Record.

On the morning of March 26th, on the dry Lake Ivanpah, The Ecotricity Greenbird driven by British engineer, Richard Jenkins smashed the world land speed record for wind powered vehicles. The Greenbird clocked 126.1 mph (202.9 km/h) , eclipsing the old, American held, record of 116 mph , set by Bob Schumacher in the Iron Duck in March 1999 at the same location.The fully-composite craft (the only metal is in some of the bearings) used a solid wing to reach speeds up to five times that of the actual wind.The wing also provides unwanted lift, so it uses the same downthrust technology as F1 cars - at speed, the 600kg car presses down on the salt-flats with a force of almost 10,000N.Greenbird website.

Topic by Kiteman   |  last reply

Can a hard drive motor be used to generate electricty?

I have built a small Lenz type VAWT and wanted to used a hard drive motor I had laying around since it has great bearings and a the disc provide a great way to mount the air foils.  I believe it would generate 3 phase power but I am not sure how to wire it.  three of the six wires have continuity - are there three specific coils?  I have no information on the motor itself.  Would the motor have to spin at high speeds to really generate anything?

Question by gearhead460   |  last reply

How would I choose the most efficient electric motor to use as a generator for a small wind turbine?

I have a school project to build a small wind turbine (approx. 8" propeller diameter) to produce the maximum out DC voltage possible.  We are still deciding between a horizontal & vertical orientation (leaning towards vertical) but we need some help on understanding what we should look for in the motor/gear setup in order to produce the maximum possible voltage at relatively low wind speeds.  What should I look for and where would be a good place to buy/scavenge these parts? Thanks!

Question by ddrocketman   |  last reply

45 WATT Towel Rail - would there be any way to power this off grid?

Was thinking that perhaps, because of it's low wattage that perhaps there might be a way of powering thing so that dry towels might be possible if the central heating wasn't on. BUT I'm not an electricity guru so help required!!  :))

Question by ITSACAKETHING   |  last reply

Calculate energy generated by wind or wave energy?

Is there anyone on here that knows how to calculate the energy generated by from wind or waves turbines. I've been trying to find out on the 'net but all i can find is either way too advanced for me or just describing good places to put the turbines. I want to know if I should go for wind or wave energy for greening out my summer house.? I think wave generated energy would suit the place best but i need to confirm that.

Question by Osquar   |  last reply

Mechanical / Wind up - 60 minutes timer

Hello guys,I am planning to do one project where I need to use mechanical timer - or better said mechanism. It needs to run for 60 minutes and it does not need to be really precise. So +/- 5 minutes is not a problem. Now... the main "problem" bothering me is the size of this mechanism. Maximum diameter of the mechanism should be under 3.5cm and maximum thickness can be 2.5cm.. This is why I can not use mechanical mechanism from kitchen timer. Because it is too big. (diameter of around 5.5cm or even more).. I have been thinking of mechanism from wind up toys since it is really small.. Is there any way to modify it? Does anybody have experience with this? I have been thinking also of using damper and spring... The other requirement is that it needs to be cheap (which means under 5$), that is why I can not use mechanism from watches. Basically what I would need is the same mechanism you can get in kitchen timer, but it needs to be smaller. Now I do not care with which technique or mechanism we achieve this. It just need to run for 60 minutes and it needs to be mechanical. Can anybody please help me with suggestions on how to make this work? Thank you everybody in advance!Best Regards, Luke

Question by LutzS3   |  last reply

could i use a split charge relay to controll charge to batteries from a wind generator?

Hi. i am making a wind generator for my home. i have made the generator but need a charge controller for the batteries. i would make one but i have no idea how to and can't find any useful schematics. then today i thought. what if i used a split charge relay? i could connect the turbine to the alternator connections, connect my battery bank to the car battery connections and a dummy load like a water heater or something to the leisure battery output. what do you think? yay or nay? thought i'd ask first in case it will ruin an expensive battery bank. thanks in advance :) 

Question by ljarrald   |  last reply

Coil Winding on 4 Inch Cantex Electrical Conduit

My picturers are a mosaic of steps to take when winding coils on Cantex 4 inch PVC electrical conduit. Uses include Tesla coils, flow sensors, and antennas. Please forward any and all comments and suggestions. Thank you !

Topic by JohnHagy   |  last reply

What would be a good material for creating a custom vertically oriented wind turbine blades?

For a school project my group an I are building a vertically oriented wind turbine  similar in orientation to the one in the link( We would like to build a few different designs to test which will give us the best efficiency as we will do using it to generate maximum output voltage. I'm wondering, what would be a good way to create these different custom pieces, especially the curved airfoil shapes we may wish to utilize in the design? Thanks!

Question by ddrocketman   |  last reply


Hai... I need some solution... I'm not a electrical engineering... so, there are 5 unit of 3 phase wind turbine, with rate output up to 2Kw, 48V each... and I need to produce current load for home about 7Kw to 9Kw, 240V,,, so, how to wiring from 5 unit of wind turbine to home current...sorry for my english and thank you...

Topic by zeak1975   |  last reply

how to design a wind powered water lifting system?

I need to lift water from the higher tank to the lower tank ( against gravity)...i difference between tank a and tank b is 20 cm only

Question by lulu114   |  last reply

Is this DC motor suitable for a wind turbine/bike generator?

Hi, so I have recently salvaged an old garage door motor, I have managed to a separate the DC motor from the casing and now I am converting it into a generator (by removing the metal core and replacing it with permanent magnets.) The motor's label says 120v, what can I make with a motor this size? Will this motor be acceptable to convert and make into a generator for wind turbine or bike? Label: THE CHAMBERLAIN GROUP INC. MOTOR No. 123D67 120V 60 Hz 4.5A 70 degrees C INT. DUTY THERM-PROTECTED  TYPE T. (CL. B (Odd symbol) OBJY2 188B72) ASSEMBLED IN MEXICO Thanks guys!

Question by Exploitation   |  last reply


Home portable generators have a 2 pole  roto with windings on it uses 24Vdc what I want to know is how many windings are used on each pole Does it matter if the windings are 100 each or 50 or what ever For argument sake lets us a Honda 3500watt generator I have been at this for weeks and cannot get a answer Hope some can help  Tim Murphy 

Topic by Tady43 

How do I make a simple, homemade, wind/water powered pump to extract water from a stream and pump up 10ft?

Hi, Anyone know to make a homemade wind/water powered pump to extract water from a fast flowing (shallow - 1ft) stream at the end of my garden and pump water up 6 - 10ft and then around my garden to feed plants and animals?

Question by gerryshauna   |  last reply

can I have a small heater being powered by solar power and or wind?

I live in Scotland and I have a small greenhouse on my balcony, as the winter is coming and is already quite cold I was hoping it could be a way to have a small heater powered by solar power or wind power.  It doesn't need to put out high heat, just enough to bring the temperature so my chilli plants don't die.

Question by pjfsdias   |  last reply

Looking to build a battery powered small light (LED?) that works on a winding/pull cord. Alight until cord winds up.

I'm an assemblage artist and I'd love to begin putting electrical components into my art pieces. My first idea is to back light a piece with a small lamp which the user has to pull a cord to turn on, and then only lasts a short time (20 seconds?). This would need to run on a battery of some sort which could be changed when it's dead. Can anyone point me in the right direction? I know VERY little about wiring/electrical -  only enough to rewire traditional lamps or light switches in the home. Thanks so much! Shelly

Question by pickwicks_plum   |  last reply

Without Hot Air: Mackay's new Book on Global Warming

My friend told me about a new book by David Mackay. I've added screenshots of two of the really nice graphs he put together in his book. Says my friend:Forwarded Message:David Mackay, Cambridge U Physics Professor and a flat-out rockstar inthe field of statistical inference, has written a book on SustainableEnergy, which he is (as usual) giving away for free on his website.'s also a few slide decks for the overview: a blog:'m not much through it yet, but the gist seems to be putting realnumbers on the size of the energy problem, much as Saul Griffith hasbeen doing. It's written in his usual style, which is to say it readslike common sense you feel you should have known all along.

Topic by nagutron   |  last reply

pocket size camp stove by javin007?

I made a stove just as discribed but my flames died down to about one half of an inch after the primer flame went out now i didnt have it in the wind shield containes but i was indoors does the wind shield hold heat to keep the flames larger the demo i seen on yuotube the flames were much larger thanks

Question by Gizmobuilt56 

Recommendations for safe pneumatics?

I'm looking for a pneumatic setup for an air tank and a blow gun that is safe enough to use around school kids.  I want to provide pneumatic feedback to give the sensation that they were hit by a small gust of wind.  Safety is the foremost concern on this.  What size tank, psi, and regulator should I use?  Also can this small 'gust of wind' be controlled from a USB port?

Question by codingJoe   |  last reply

Building a simple Dc generator?

Greetings, We have a school project and we must a build a DC generator, and I want it to be D.I.Y., but I have a problem, I don't know if the generator I am planning to build can make enough power to make small loads work. My armature is made of several laminated "I" core with winding of AWG#24and1/2, that's my plan, but how many turns shall I wind? is the laminated Iron core enough or should I use iron core instead?, do I need a strong magnet? Thanks in advance!

Question by Mechron   |  last reply

240v to 75kv transformer, shell type? Double winding? Need sum help please!!!!!

Hello! So I found this transformer the other day, it's a 240v to 75kv here where it's gets interesting, it's a shell type, with two separate transformers I'm guessing. It has a input for 240v on each end, it has 1-5 taps but 1 is not used 2 is phase 3 is neutral 4 is earth and 5 is not used. It only has condanuity between 2 and 3 on 240v side. On the high voltage side it has only one output and no condanuity to the core or anywhere, So I'm confused. I'm wanting to make it in to a high voltage Jacobs ladder setup. I have a varic that is 240v and goes from 1v up to 280v on the wiper side it is motor driven. Can I arc between the two hv posts? Also both transformers are have the same phase in parallel. Please help me!!!!! Thanks! 

Topic by nz dude   |  last reply

How can I convert an AC motor to a generator?

So for a school project, I am required to convert an AC motor to a generator. Actually, it is a table fan of diameter approximately 10-12 inches, and runs on AC power at 220V 50Hz. I want to convert it into a windmill, but I'm stuck on the power generation part. So using materials easily available in a high school physics laboratory, how can I convert an AC motor table fan into a generator? Also, what would the output of the generator made in volts and amperes?

Question by diwakarchopra   |  last reply

is there any way to measure rpms cheaply?

We are making wind turbines in one of my classes and my team is making a tesla turbine as ours. we want a way to measure how fast the disks are spinning. please help.☺

Question by DehLeprechaun   |  last reply

Quick Answer Please . I Have A 12 Volt Dc Motor And Would Like To Make A Generator With It . How ?

I Want To Make Something Like A Wind Mill That Light And LED On Spinning Etc Etc .

Question by EpicTrix   |  last reply

Strong Egg Timer mechanism?

I want to a mechanism that turns a drum very slowly for a few hours.  It should work just like an egg timer: You wind it up and then it turns slowly. Is there mechanism available that works like this or do I have to built it from scratch?

Question by uwe999   |  last reply

Kite surfers jump pier

A story for Eric... Two kite surfers from West Sussex took advantage of strong winds on the south coast to realise an ambition to jump over Worthing pier. Jake Scrace, 25, and Lewis Crathern, 24, had been planning Monday morning's jump for three years but had to wait for perfect weather conditions. Carpenter Mr Scrace, who makes kite boards, and professional kite surfer Mr Crathern are both from Worthing. Between them they have 16 years' experience in the sport. They took off from Goring to the west side of Worthing in gusts of wind that were more than 40mph, and had two helpers on the beach.     Link to BBC story, with video.  

Topic by Kiteman   |  last reply