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Webber1

What a gale!

by Webber1 Jun 30, 2015
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Really like your design. Thank you.
I have printed two of these now. Using two different motors. The best one is a high speed shaver/hobby motor.
This is the one i used : http://www.ebay.co.uk/itm/232347352189?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
It pushes a good amount of air and is quieter than the round one I tried first. I am tempted to try a brushless outrunner but most of the noise is coming from the air movement so I don't think it would be much better and for the price the gain would be disappointing.
Next is to print a good propeller balance to properly balance it, I think that will reduce the noise considerably at higher speed.

Awesome Design! I will upload mine as soon as it is finished printing. I am halfway through. I use a https://www.3dhubs.com/3d-printers/CTC-3D that ok but resolution can be an issue as a result the impeller has a slight wobble. I have modified it to fit the house of http://www.amazon.com/Swellder-AFC1212DE-120mmx38mm-Bearing-BRUSHLESS/dp/B00XDXX01C so at 4500 rmp she gets a tad vibratory. Any tips on how to balance such a thing, I mean with out getting a decent printer?

Cheers

Awww yeah! I can't wait to see what you've made.

With regards balancing it, the best I could suggest is something like a propeller balancer and drilling holes into the back face and/or sticking weights to it. You should be able to russel up something similar using a bbq skewer or a couple nails or something, how hard could it be.

I'm very keen to see how your 12v fan works out as I didn't have much success with mine. I'm thinking way more speed is required to make an impeller work. I was thinking of stealing the guts from this http://www.thingiverse.com/thing:1175393 and then you'll have a REAL brushless motor to spin the bajesus out of it.

Also, how are you planning on supplying the 12v?

F.Lab's DIYbio Centrifuge

Check it out! Its in the made section such a fun build cheers dude.

Comments deleted.

Hi Webber1 I really like your design amazing work, do you have any other files than STL file? I need to modify a bit to fit my motor, also what program do you use to work on this. Thanks so much.

Thanks buddy. I hope you get this thing working better than it does for me. You'll have to let me know if you get any reasonable results.

There are .step files (which you should be able to import into most CAD package) as well as the original inventor files on the download page. Once un-zipped you should hopefully find all the files within. I use autodesk inventor for all my modelling needs as I can't get solidworks to 'work'.

What if you use a brushless motor for an RC w/ ESC, instead of a fan? I'm thinking it might work, but i'm not sure what the longevity is...

Motor mounting plate v2 is not available as an Inventor file. I like to do some modifications on it for my motor without having to redraw the whole thing. Can it be made available please?

the inventor zip file has been updated and now includes all the new files.
the new mounting plate is just a cut and shut job of the previous one, it might be easier in the long run for you to make a new one. it was late when i did it.

Ah, I see you are using a turbine. Turbines only really work when spinning at very high speeds.

well, first of all, you need to get significant pressure from your fan for one of these things. An ordinary DC fan won't cut it. A model motor with a printed fan is your best bet, or find the right fan from some company in China or something. Cooling for the motor can be easily accomplished with an appropriately sized DC brushless cooling fan, just blow air past the brushes.

hey nice work ! Does anyone have a vid of it working?

oh yeah!, and it only costs 240 of my hard earned bucks. i ain't paying that. geez

I'm with you on that one.

Hi,

I've been experimenting with fans lately so I'd suggest you make the outside of the blades flatter (e.g. the pitch on the inside radius is 10mm, the one on the outside 6-7). This will help with the amount of air you can output. Just a suggestion, otherwise I love what you've done!!! Keep it up.

Is this created for the "Catch the Wind" challenge? as it looks like if it catches ELECTRIC ENERGY and releases WIND...

Were should me install the fan and fan shroud?

google "most powerful mini 4wd motor" and click on first link. Thingyverse wont let me post a link for some strange
control freak reason

fyi - you can use the Tamiya mini 4WD motors in this for more grunt

In your quest for a fan, is one of the criteria that it be powered by a USB port?

Comments deleted.

Thanks for the model, I'am printing one right now, 0.7x the time due to my printer size.

I will try to design a different "neck" body because I'm thinking on using an old PC CPU fan to power it.

If I have success I will post the remix.

Indeed it is. I don't wish to be tied down with a plug that I'm likely to stand on at some point.

If you think some additional/alternative parts are needed then just blurt it out. Keeping In mind that I'm a compleat dunce with electronics and the fact I even managed to build the printer is a complete mystery.

You can use a voltage booster to get the 5v USB supply up to 12v (you lose amps, but you should still be fine because a little fan won't draw much). This widens up your options for fans or motors and could really boost your air output due to the faster speed you'll get at 12v compared to 5v.

I recently put together a little fan with computer case fan, a voltage booster, and an old USB cord. It's super quiet so even though I had to shell out about $15 in parts, I figure it's worth it. I used this stuff:

booster: http://www.amazon.com/DROK-LM2577-Converter-Adjustable-Voltage/dp/B00C9179WK/ref=sr_1_23?ie=UTF8&qid=1436420601&sr=8-23&keywords=voltage+booster

I chose that one because I could solder my leads. There are others that have screw terminals if you don't want to solder. Just search "voltage booster". What you do is hook up the power input side to your USB cord, a voltmeter to the power output side, and then adjust the little screw on the potentiometer until you have 12v. Then glue or tape that screw down so it doesn't shift.

Fan: http://www.amazon.com/ARCTIC-F9-Standard-Noise-Case/dp/B002KTZJOQ/ref=sr_1_4?ie=UTF8&qid=1436420896&sr=8-4&keywords=arctic+computer+case+fan

I specifically wanted something very quite, and at something like 25db, it's barely a whisper. The white blades look cool when they spin too. Very comfortable breeze on my face while sitting at my desk.

Great suggestion on the booster card. I did think that more POWER!! would be the answer as I did get a different one but it came preset to 5v and I don't think I could replace the stupidly small 1.6mm long resistor to make it output 12v. I never thought there would be one with an adjustable screw. I will definitely look into getting something similar to what you have suggested (but with her majesties pound stirling, not $).

As for the fan, I am already looking into using a brushless motor instead of the brushed model motor I suggested at the start. This is because I found the model motor gets rather hot (even with the air flow around it) and my printed fans just keep falling off the stumpy shaft after a minute or two :(
I'm looking at canabalising something like this http://www.amazon.co.uk/basicXL-Noiseless-USB-Desktop-Fan/dp/B003YUG3ZO

Annoying, I made one single edit and lost all my paragraph formatting. Sorry it's a total block of text like that. :-(

edit: fixed formatting.

edit2: well, maybe not.

edit3: that did it!