Anybody dealt with http://rooftopwind.biz/

[Andre Dean]

Hello,

I have sent web messages and emailed this company but do not seem to find anyone to respond.

http://rooftopwind.biz/contact_form.html that is the form they have on the website, which appears to go nowhere.

Cannot find a phone number other that the company records....

Rooftop Wind Power, LLC
Phone: (501) 776-1015 Seems to always go to a FAX after a few rings...

Has anyone dealt with rooftopwind, if so, do you have any feedback and contact details you can share.

Many thanks

[Chris Olson]

I certainly have not dealt with them. It looks like they build rooftop ventilators with a generator strapped on them. It also looks like they maybe deliver Bulk Stored Energy with a truck by bringing you a battery box with a meter on it? You just plug into it, they read the meter and send you a bill?

I've seen a lot of things. But I never seen anything like that before.
--
Chris

[Dale Sheler]

Rooftop wind is a scam, the wind around a building is very dirty (turbulent) Google Mick Sagrillo and roof top turbines.
To really take advantage of the resource you need to be in clean non turbulent air and that will never happen on a roof top.

[Andre Dean]

Rooftop wind is a scam, the wind around a building is very dirty (turbulent) Google Mick Sagrillo and roof top turbines.
To really take advantage of the resource you need to be in clean non turbulent air and that will never happen on a roof top.

Hi Dale,

I agree the rooftop strategy looks a tad flawed, but I was hoping to take a look at their generators etc., to see if there was anything else that was suitably functional....

From all the signs on the web, it looks like they may have gone BUST or out of business.....

If anyone knows any better, or has experience with their domestic generators or something similar from elsewhere I am keen to investigate a supplier of decent small generators for re-sale.

I have a prototype 2KW generator from a UK supplier that has no metal cores, you can turn the spindle by hand easily and it does not have that bump...bump...bump resistance I see in the Chinese technology I have been looking at.

Many thanks
Andre :cool:

[Robert Mann]

As the inventer of the tree top wind mill and the Mann Smart drive this guys have a long way to go.
I deal with Kwatts a second with my stuff and have youtubes to prove it.
For a VAWT to do the numbers they say, there unit will need to be 3 times as big.

For the PMA they are using a Ginlong there going to find that the bearing as they come in this unit will fail very fast with that kind of side load.

They realy need to post a vid with wind to power to grid what I see is a lot of art work.
As we call roofart.

I wish them all the luck.
Bob Mann

[Chris Olson]

I deal with Kwatts a second with my stuff and have youtubes to prove it.


What's Kwatts a second? I never heard of that one before. I always thought power was measured in watt-hours or kWh.
--
Chris

[Robert Mann]

It kind come down to a dyno testing of the PMA
how much cogging to brake free the PMA than it is RPM to power output in open volts and then real watts in to the grid

than with wind what RPM is 10MPH on the turbine and so on.
To many wind turbine builders add up all the power for the day or week even for a year to make the numbers look BIGGER to the average person.
I like to look at it what the PMA is making right now this very second.
Is it helping with 20% of the homes needs or so on.


here is the Ginlong 500 charts.

http://www.ginlong.com/images/200906/500A-PMG-Power-Curve-1.jpg
http://www.ginlong.com/images/200906/500A-Open-Circuit-Voltage-1.jpg

One point her is is this there math or a real test??

What I have tested on my PMAs is very close to my math charts.

Here is some real testing in to a Ginlong grid tie with some air gap adjustments for cogging.

With .020 th air gap run in to the Ginlong grid tie volts is DC with the load of the grid tie. The Ginlong can be adjusted for volts=watts I did adjust a bit to find a sweet spot but you could spent all day trying to get it right.

This is were Steve is working with the Smart controller MPPT if you miss the ploting by hand with these kind of Grid Ties ( Ginlong) you just through away power.

You will never know it.

loaded 202 RPM volts 141 watts 502

405 RPM volts 175 watts 683

cogging @1ft 1.lb 08 oz to break free

I opened up the air to .060 th and reran the same test.

loaded 206 RPM volts 87 watts 205

412 RPM volts 147 watts 287
cogging was 10 OZ to break free spinned with your finger tips .
Hello I did up a drum with the slant that I have been selling

and reran the test.

It had 14 OZ of cogging

RPM 203 Volts 140 Watts 486

RPM 407 Volts 170 Watts 659
This is the set up a sell and seam to work for evey one.

I all was try to keep it real with my testing here is a vid with it making 1150 wats into the grid at just under 650 RPM.
http://www.youtube.com/watch?v=phbF1uGRmpY

But this bring us back to the wings will it keep it up at that speed??
for a Hydo we can safely say we can keep it at that RPM to Watt
and with a gas/Ngas engine we know we can do the same
Bob Mann

[Chris Olson]

To many wind turbine builders add up all the power for the day or week even for a year to make the numbers look BIGGER to the average person.


It has nothing to do with making numbers look bigger. It's the only thing that matters. Power is generated, sold and used measured by kWh, not the instantaneous output of the machine that generates it.

Making a statement that "x" combination meets 20% of the home's needs at any one instant means absolutely nothing when the bill comes at the end of the month and what the thing actually provided to power the home's needs amounts to the proverbial drop in the ocean.
--
Chris