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Old 08-13-2014, 06:54 PM   #1
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Wind power anyone? This is cool !

This Amazing Wind Turbine Will Remind You Of A Childhood Pinwheel

Ok the video doesn't show the RV version until the end but this is very cool.
Made in the USA .....of aluminum of course.

Facebook page is https://www.facebook.com/pages/Kohil...98421663628816

Think about it, no dependence on the sun, will work even at night! Charges as you drive...
Initial pricing for the RV version is $4,000.
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Old 08-14-2014, 06:10 AM   #2
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...charges as you drive...

Or you could install a better charge line from your alternator to your trailer for a lot less money that wouldn't increase your wind resistance. There have been a couple threads on doing this.
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Old 08-14-2014, 06:59 AM   #3
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only 4K eh? how much output do you get for that?

no wind no power. $4k buys a very nice solar pkg with lots of reserve. let me know when they're 75% off on black friday ;-)
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Old 08-14-2014, 07:15 AM   #4
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I've not been able to find technical specifications on this device (naturally, since it's still in Kickstarter, not in production). As an engineer, that immediately prompts a "wait-and-see" approach. I can't judge technology based solely on marketing hype.

I can speculate, though… A wind generator is still a generator; you're just getting the power from the wind and not from an internal combustion engine. Wind generators can only harness about 60% of the kinetic energy in wind as a theoretical maximum. But most wind generators operate about 75% to 80% of the Betz limit, or between 45% and 48% of the kinetic energy in wind.

So to replace your 3kW Honda gasoline generator with a wind generator, you need one that produces 3kW of electrical energy, which requires about 6.67kW of wind kinetic energy. There are formulas for calculating the energy content of wind based on wind speed, air density, and effective cross-sectional area of the device. Since we don't know the effective cross-sectional area of this device, (no specs published) that's where we're stuck.

But it's a pretty safe bet that for a device small enough that you can mount on the roof of your RV, you're talking a goodly amount of wind. Enough wind that you'd never be able to safely deploy your awning. So it's a good thing it would charge your batteries while traveling down the road, because you wouldn't want it charging them while you're parked!

And I sure hope you never hit an overhanging tree branch with one; that would be one expensive repair!

If you're thinking of joining the Kickstarter campaign, stick with getting a little one that you can set up on a picnic table to run your laptop or charge your tablet.
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Old 08-14-2014, 07:18 AM   #5
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You have to buy it to find out what's in it.
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Old 08-14-2014, 01:10 PM   #6
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I have to agree with Protagonist. There is not enough data to support what they are saying. My thoughts are most of the energy is coming from a battery that is fully charged before you even start the day. I have a feeling that if the little turbine had to charge that battery that it would take a week to do it if there were no devices drawing power from it and it was dead to start with. The battery in the thing is big enough that the contribution from the wind is minor.

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Old 08-14-2014, 02:46 PM   #7
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What happens on calm days?
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Old 08-14-2014, 02:55 PM   #8
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You plug it in to charge the battery and it has enough energy to run all your toys even if the wind does not blow.

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Old 08-18-2014, 04:45 PM   #9
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looks like a nice item but for less money you can get a marine grade wind turbine that will work better and live longer.

But i do agree sometime you need a wind turbine when you have no sun. A lot of places get some wind at some time and if you park under shade the panels are not all that effective.

My cousin has both panels and turbine on his boat.

nice find none the less..
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Old 05-11-2015, 09:41 PM   #10
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Amazon Wind Generator - using microphone stand. Keeps 12v charged in 10mph wind.
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Old 05-11-2015, 09:56 PM   #11
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Quote:
Originally Posted by BoldAdventure View Post
What happens on calm days?
It's a fan.
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Old 05-12-2015, 06:21 AM   #12
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Quote:
Originally Posted by PaulG_4307 View Post
Amazon Wind Generator - using microphone stand. Keeps 12v charged in 10mph wind.
Is that this one? If so, it looks like it's only 15 watts, so it'll keep a battery that's not being used much topped off, but not much else. Still, it's a cool find.
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Old 05-13-2015, 10:10 AM   #13
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Yes that's it. Adding 15-55 watts with wind and solar keeps our 12v in the 25% to 90% charged range. We have all led lights and use a Endless Breeze 12v fan and water pump. The TV uses 25watts using a 75watt Inverter. Keeps our small stuff charged like phones tablet laptop and 2way radios. We have lasted up to 5 days unplugged. Ran out of water.
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Old 05-13-2015, 02:36 PM   #14
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Being the simpleton that I am, I do not think I would want to be parked in area where the wind was sufficient to turn a generator. I like drinking my cocktails on still evenings!
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