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The Tri-Nado Extreme
9 foot 1 inch diameter
TSR - Tip Speed Ratio 5.78 to 1 @ 10 mph wind.

Rotational Start and run at 2.2 Mph.

The Tri-Nado Extreme view in the air Front view of hub and blade mounting up close Back view of hub up close
Massive 9' rotor dwarfing a mini van
Extreme Performance Graph
Performance Graph

THE POWER YOU'VE BEEN LOOKING FOR IS HERE!

This rotor turns the rpm's of an average 7' rotor, and has the torque and power of a 12' rotor all bundled in a awesome looking 9' design.

If you are wanting to build a "gear up" system you can go up to 1:10 ratio depending on the generator with the Tri-Nado Extreme.  This system has a rotational start speed of 2.2 mph and runs all the way down to 0.7 mph.  At the 2.2 Start speed it runs a minimal 24 rpm's and has fantastic torque at this amazingly low wind speed.

If you have a high output low rpm generator, or you have a generator that needs a few hundred OR even a few thousand rpm's to produce power, you can gear this rotor up and it will crank out some serious voltage and amperage in a modest 10 to 15 MPH wind.
This rotor offers so many options for use it is not even funny.

This unit comes with TWO HUBS.  Each one is Laser cut and made from a solid piece of 3/16th steel that when doubled up is 3/8" thick which is stronger that just a solid 3/8" piece of steel.  The center hole is 17mm for mounting.

RPM Performance Graph.
Extreme_rpm_grid.gif (10203 bytes)
Click to view full size.

TSR test results.

Just in case you do not know what TSR stands for, it is how may times faster the tips of the blades run in respect to the oncoming wind.
The test for start and TSR were done in turbulent conditions.  When I had a solid 10 mph wind for a couple of seconds I locked the data on the rpm's.  Reading was 180 rpm's

The Math.

Rotor size - 9' 1" foot
9 times 3.14 = 28.26 foot circumference of rotor.

Wind - 10 mph times 88 = 880 feet per minute.

Rotor speed - 180 rpm's times 28.26' circumference = 5086.8 Rotor tip speed in feet per minute.
Fun tidbit - 5086.8 divided by 88 = 57.8 mph at the tips. Sweet!

TSR - 5086.8 feet per minute rotor speed at the tips divided by 880 wind speed = 5.78 to 1 TSR.

 

Before you buy please read the disclaimer
WAS $539.99
Now $349.99

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