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hooptey

Vertical Axis Wind Turbine

by hooptey May 7, 2013
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unfortunately my prototype doesn't work well, I used 30 cm aluminum blades.
even with moderate winds it turns very slowly and often stops
I mounted a ball bearing on the axle, so it must be a problem of inclination of the blades or that they are too big
if I push it with my hands it turns fluid without stopping, if instead pushed by the wind it stops

Thinking about printing this for a school STEM project, any ideas on how I could get text to show up on the sides when it spins, specifically the school name.

out of curiosity why was is designed as hollow?

What would I attach this to, to make it spin?

May be you can use the printed generator from this windturbine for yours:

https://www.youtube.com/watch?v=aNnbJ7uGElw

Hey guys- I can print this and other things for you!

I just wanted to let you all know that I'm putting my 3D printing skills on the line to help out with a cancer fundraiser! It's hosted on Indiegogo, and it's falling flat without widespread support... so, I'm adding some perks that will include some 3D printed parts, toys, etc of your choosing. I'll print one of my designs for you, an upgraded one, or one of yours or someone else. Heck, I will even design a part in solidworks if you send paper drawings!

Have a look at:

http://www.indiegogo.com/projects/jarvis-foot-help-our-foot-less-friend-outrun-cancerhttp://www.indiegogo.com/proje...

...and I look forward to some donations. I'll try to price them so I can make it worth your while... perhaps run some parts on donated filament. Cheers!

This is awesome, I too have some spare broken vertical blinds so I'm definitely adding it to my list of things to make. Every day I look at this site I get more inspired that the maker movement is changing the world for the better. Cheers man!

RoboDino- You have the awesomest username ever. Also, yes... I find the maker movement inspiring, as well... Shame on anyone who tells us what we can't do!

Any recommendations on a generator and battery to hook it up to?

you could use a stepper motor and bridge rectifier (stepper motor outputs AC, bridge rectifier rectifies the AC to choppy DC, so add an electrolytic capacitor to the output and you have a generator!)

Steppers have a considerable amount of friction - they are suited as generators in the same way they are as motors: High-torque, low-speed. Just try shorting the wires on one and try to turn the shaft and you'll see why.

There are some unusual types of generator that work much better on high-speed low-torque applications - but they are exotic enough that wind enthusiasts often have to build their own.

At the present I've played around with attaching it to a small DC hobby motor, and used that to charge the batteries of some (formerly) solar-powered garden lights. It's not much, but it's a start for the tinkering I intended. If I had the time, I'd try to make one that's much larger and has proper bearings. At the moment, mine has a few stacked fender washers with thin layers of molykote in between to make it slippery.

Awesome. I had vertical blinds in an apartment and had to replace 2 or 3 slats that my dog chewed before I moved out, but I had to buy a pack of 25. Now I finally have something I can do with the 22 other replacement slats that are collecting dust in my garage. :)

This is stellar! Any chance you'd sell a set? I'd love to put something like this through it's paces and see what it can generate!

This is stellar! Any chance you'd sell a set? I'd love to put something like this through it's paces and see what it can generate!

Since it's an open-source project now, how about this- when some other people print a few copies and have the chance to tweak them a bit for best performance, I'd be happy to print you a set of the optimized design if you send me a few dollars to cover the cost of the plastic and shipping. Stay tuned to the comments and see who makes one- or else I'll get back to you when I make the next version. Deal?

Sounds like a deal! Be sure to keep it fair for yourself, we tinkerers tend to undervalue our time...