Wind turbine propellers and blades for sale CLEAR - mean green Wind seeker 501 502 503 Kiss replacement blades energy MEAN-GREEN aluminum & plastic propellers propellors airx 403

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100% American Made - High Quality Product (Not Imported)

World's fastest turning blades at over 2000 RPM!

Great for direct drive PMA's

WHAT MAKES OUR WIND TURBINE BLADES SPECIAL?

They lift and push at the same time -

"The boundary layer effect on these blades is pure perfection"

Thermodynes Hornet and KT Pantera blades made by hydrogenappliances.com and WindturbineUSA.com lose remarkably little energy in terms of efficiency. The whole blade is perfection and could only be described as a monolithic wind catching 'sweet-spot' from bass to tip.

The very best electricity generating turbines are not pushed by the wind so much as they are pulled. Making electricity requires medium to high RPMs at the alternator and blades that are pushed can never go faster than the true wind speed, usually much slower. These are called "drag turbines". Good turbines rely on aerodynamic lift to turn them. When the blade pitch is set perfect the blades can spin many times faster than the wind, just as a catamaran can sail faster than true wind speed.
A blade with tip-speed ratio call TSR of 5 will spin at 50mph in a 10mph wind, creating its own apparent wind of ~51 mph. The apparent direction of that wind moves closer to the blade's rotational plane the faster it spins; likewise, the blade tip sees a faster and shallower apparent wind than the blade root.
As the apparent wind contacts the leading edge, it splits. Some air goes along the convex back, some goes along the concave front. The streams adhere to the blade surface and adjacent air by boundary layer effect.
The concave side air slows down, generating a net positive air pressure; the air flowing over the convex back of the blade speeds up, creating a net (and stronger) negative air pressure. Both sets of pressures act perpendicular to the surface of the blade. The forces act in all different directions and intensities, but the net force is a flexing and forward one. The flex force is canceled by the blade's stiffness; what's left is a forward vector of surprising strength:
There's a fairly narrow window of apparent wind direction or attack angle - in which a lifting airfoil will operate efficiently. The flow along its sides must be smooth, and it must remain attached to the blade surface. If it detaches, the result is lost lift, terrible drag, and turbulence, with attendant noise and vibration. These conditions are known as stalling (attack angle too steep) and luffing (attack angle too shallow.)
Wind turbine designers have developed numerous strategies to keep the apparent wind angle correct, which is especially hard given that different parts of the blade are moving different speeds, and to keep lift strong and constant along the full length of the foil. These strategies can be grouped in pairs: Taper and draft, twist and pitch. Near the hub of a propeller-style-turbine, the apparent wind is slower and closer in direction to the true wind, the blade root has a wide chord (breadth) and a fairly deep draft, and it faces more toward the true wind. The blade tip is traveling very fast, too much breadth or 'cup' would create crippling drag, so the blade there tends to be narrower and flatter. The tip also experiences an apparent wind nearly in line with its rotational plane, so it needs very little twist.
Finally, the best HAWTs (horizontal-axis wind turbines) are able to rotate the entire blade to vary TSR, optimize lift, and keep the alternator spinning at its prime electricity-making RPM. They use taper, draft, twist and pitch all at once.
For what it's worth a brief look at why the world's best engineers design HAWTs rather than VAWTs (vertical axis wind turbines). The very worst VAWTs are pure drag machines: paddles pushed by the wind. Their maximum apparent wind is the true wind MINUS their own rotational speed, so they can never go fast and the wind's force is gutted. And two-thirds of the time, a given blade is either contributing nothing or plowing headlong INTO the wind. These generally fall under the heading of Savonius Rotors. Their TSRs are always less than 1.0, and their efficiencies are gruesome.
Better, though not much, is a class of semi-lifting VAWTs classified as Darrius, Modified Darrius, or Gyro Rotors. These include the famous 'eggbeaters' and more modern designs. Almost half the time, their blades are on or near a "beam reach," moving perpendicular to the true wind, which sailors know is the fastest, most-efficient point of sail. But the back blade is operating in the wind shadow of the front one, its draft must somehow be inverted, the downwind blade is dragging some, and the upwind blade is a sea anchor. Darrius blades are pulling maybe 50% of the time. They aspire to TSRs of 2.5, they do spin faster than the wind, but not much.

A HAWT experiences great lift over a 100% power stroke. That's why GE, Mitsubishi, and Vestas build them that way. Pound for pound and dollar for dollar HAWT'S are winning the economic battle for cheap and reliable wind power.

All blades MUST be mounted on our tilting or tilted bracket types to keep clearances to the

mounting pole at a safe distance! DO NOT mount these on other manufactures wind turbines!

34.5" KT WIND TURBINE BLADES -

For use with Super-Core, Max-core and Dual-Core PMA's

THE LOW WIND AREA MOTIVATION!

5 big blades makes turbines work so much better for ultra low wind zones!

Wind Turbine Propeller Sets With Round Hub / Lots of low end torque!

Large 76" Diameter can generate 3000 Watts or more

depending on PMA efficiency. (34.5" long blades)

(3 blade kits have 72" diameter hub style)

We recommend using the 2.5" bracket kits with these big blades LINK HERE

Weighed and balanced set!

We do not sell individual blades since blade sets MUST be sold in balanced

kits in order to turn smooth without vibration.

Buy ONE set #KT3BH - 3 X 34.5" KT blades with hub and bolts $279.95 Plus $41.98 S&H -

Buy ONE set #KT5BH - 5 X 34.5" KT blades with hub and bolts $299.95 Plus $42.98 S&H -

Buy ONE set #KT7BH - 7 X 34.5" KT blades with hub and bolts $339.95 Plus $43.98 S&H -

Buy ONE set #KT9BH - 9 X 34.5" KT blades with hub and bolts $369.95 Plus $44.98 S&H -

Large 34.5" Long Blades can generate lots of rotations in mild and dirty wind

These are weighed sets that are balanced to run smooth. NO HUB.

#KT3B - 3 Blade Balanced Pack Buy ONE set for only $229.95 Plus $39.98 S&H -

#KT5B - 5 Blade Balanced Pack Buy ONE set for only $259.95 Plus $40.98 S&H -

#KT7B - 7 Blade Balanced Pack Buy ONE set for only $299.95 Plus $42.98 S&H -

#KT9B - 9 Blade Balanced Pack Buy ONE set for only $329.95 Plus $43.98 S&H -

5 KT CLEAR Blade Set With Hub

#KT5CH - 5 Blade set / 76" With 17mm plain hole hub for Delco PMA shaft.

Wind Turbine Propeller Set With Round Hub / Great balance!

Large 76" Diameter can generate 3000 Watts or more depending on PMA efficiency.

(3 blade kits have 72" diameter hub style) Weighed and balanced set!

Order model #KT5CH: Includes 5 KT blades, hub

(Makes 74" dia.) and mounting hardware.

We do not sell individual blades since

blade sets MUST be balanced to run smooth.

Buy clear KT 5 blade set for only $319.99 Plus $37.99 S&H -

Buy clear KT 7 blade set for only $369.95 Plus $43.99 S&H -

Buy clear KT 9 blade set for only $419.95 Plus $45.99 S&H -

CLEAR KT 34.5" long blades only (NO HUB)

Weighed and balanced set! Not sold separately.

We do not sell individual blades since blade sets MUST be balanced to run smooth.

Large 76" Diameter can generate 3000 Watts or more depending on PMA efficiency.

(3 blade kits have 72" diameter hub style) Weighed and balanced set!

Buy ONE set of 3 Blades #KT3C - Set of 3 Blades (34.5") for only $229.99 Plus $33.98 S&H -

Buy ONE set of 5 Blades #KT5C - Set of 5 Blades (34.5") for only $329.99 Plus $35.98 S&H -

Buy ONE set of 7 Blades #KT7C - Set of 7 Blades (34.5") for only $358.99 Plus $41.95 S&H -

Buy ONE set of 9 Blades #KT9C - Set of 9 Blades (34.5") for only $379.99 Plus $47.95 S&H -

KT HUB KITS 5-7-9-10 BLADES -

EXTRA THICK FOR ULTRA HIGH WIND ZONES

DOUBLE THICK (1/4") 17mm ID hubs that fit most late model Delco PMA's - Made from top quality steel.

New 5/16" bolts are bigger. Practically indestructible in high winds!

Buy KT 5 / 10 blade hub for only $69.95 Plus $23.90 S&H -

Buy KT 7 blade hub for only $69.95 Plus $23.90 S&H

Buy KT 9 blade hub for only $69.95 Plus $23.90 S&H -

ADD A NUT AND BOLT KIT FOR ANY OF THE HUBS ABOVE $19.95 Plus $13.90 S&H -

LINK TO: Blade Power cones for extra power in low wind zones and areas with heavy trees.

28"HORNET WIND TURBINE BLADES -

For use with Power-Core PMA's

#3BB- 3 pc. Pack Carbon Fiber Blades / Carbon Fiber - 28" long

Great for OEM manufactures of turbines.

Weighed and balanced set!

We do not sell individual carbon fiber blades since

blade sets MUST be balanced to run smooth.

3 pcs. Carbon Fiber Blades $89.99 Plus $29.98 S&H ea.

1 Carbon Fiber Wind Turbine Blade

One 28" Blade - $39.99 Plus $26.98 S&H ea.

#B28

One 24" Blade - $29.99 Plus $26.98 S&H ea.

# B24

BLACK HORNET BLADES - HUB AND BLADE COMBOS

BLACK 59" Diameter blade sets with hub & hardware

Buy ONE set of #HWB5BBH Fve blade set-

of only $169.95 Plus $36.99 S&H - (PMA, pole, tail, etc not included)

Order model #HWB5B: Includes 5 BLACK blades, Hub and bolts)

1/4' Dhub (Makes 61" dia.) and mounting hardware.

Buy ONE set of #HWB11BBH Eleven blade set-

of only $229.95 Plus $38.99 S&H - (PMA, pole, tail, etc not included)

Order model #HWB11B: Includes 11 BLACK blades, Hub and bolts)

1/4' Dhub (Makes 61" dia.) and mounting hardware.

MEAN-GREEN® EXTAR STIFF BLADES (WELL WORTH THE EXTRA MONEY!)

Green Carbon Fiber Wind Turbine Blades Set (Limited Run, Limited offer! Get them while you still can)

THE LOW WIND AREA MOTIVATION! OUR FASTEST 28" BLADES!

11 blades makes turbines work so much better for ultra low wind zones!

Wind Turbine Propeller Set With Round Hub / Lots of low end torque!

Large 61" Diameter can generate 1800 Watts or more depending on PMA efficiency.

Weighed and balanced set!

We do not sell individual blades since

blade sets MUST be sold in balanced sets to run smooth.

Great for Wind seeker 501, 502, 503 and Kiss replacement blades

Buy ONE set of #HWB6G SUPER LOW PRICE

of only $189.95 Plus $36.98 S&H - (PMA, pole, tail, etc not included)

Order model #HWB6G: Includes 6 GREEN blades, 1/4' Dhub (Makes 61" dia.) and mounting hardware.

Buy ONE set of #HWB11G SUPER LOW PRICE

of only $239.95 Plus $39.98 S&H - (PMA, pole, tail, etc not included)

Order model #HWB11G: Includes 11 GREEN blades, 1/4' Dhub (Makes 61" dia.) and mounting hardware.

HUB ONLY FOR HORNET 28" BLADES - HUB KIT for 5/10 BLADES -

2 x THICK FOR ULTRA HIGH WIND ZONES

DOUBLE THICK 17mm ID hubs that fit most late model Delco PMA's - Made from top quality steel.

1/4" bolts hold our Hornet blade well. Practically indestructible in high winds!

DOUBLE THICK 3/6 hub kit - 5 or 10 blade hub with 20 lock nuts

$69.95 each plus $18.90 S&H (1/4" thick)

HUB ONLY FOR HORNET 28" BLADES - HUB KIT for 11 BLADES -

2 x THICK FOR ULTRA HIGH WIND ZONES

DOUBLE THICK 17mm ID hubs that fit most late model Delco PMA's - Made from top quality steel.

1/4" bolts hold our Hornet blade well. Practically indestructible in high winds!

$69.95 each plus $18.90 S&H (1/4" thick)

ONE PMA LONG SPACER

#SP17 - PMA SPACER - Zinc plated , fits declo 17mm shaft

$48.95 each plus $11.90 S&H

ONE PMA SPACER KIT

#SK317 - 3 PC. PMA SPACER KIT - Fits all 17mm shafts

$49.95 each plus $11.90 S&H

PROPER SPACER INSTALLATION MORE HERE

#17MM-NBK / Special thread 17mm nut and bolt kit -

$29.95 plus $9.80 For Postal Shipping.

Blades can be painted to match home or background.

Camo colors can be used to further reduce the turbines visual foot-print.

Be sure to use a high gloss oil based marine varnish as the high gloss allows

for the fastest rotation speed.

Also oil based varnish has the best adhesion properties,

longest life and protects the plastic from harmful UVrrays.

Wind turbines experience "PROGRESSIVE LOSS" or Cascade Failure when under heavy loads. This means that the slower the rotor spins under load the MORE likely it is to spin even slower and so on (Cascade Failure) until the blades are moving so slow they can't catch enough wind to be effective any longer because of excessive "Way-Holes". This is why two and three blade systems need a computer to keep the blades rev'd up to speed. The computer removes the load by making fast adjustments and this keeps the blades moving quickly eliminating cascade failure. However a computer become less necessary when you have lots of blades working for you since cascade failure is greatly reduced by having the extra surface area of 6 blades. 3 blades will work just as good as 6 blades IF the design is 100% perfect. Having 6 blades is an EXTREMELY forgiving system for those of you experimenting with using motors as generators!

"Cascade Failure";

The slower a blade spins the more likely it is to spin even slower and so on until it can no longer adequately catch wind as "Way-Holes" form in the propellers diameter matrix area.

"Way-Holes";

A potential power producing area of a wind turbine propellers diameter that is allowing air to pass through in-between blade strikes.
or - The absence of a wind turbine blade in the winds path at any given point in rotation time usually caused by over-amperage loads including connection to lower voltage batteries used in low wind speed areas or high amperage appliances or lack of blade area in the original turbine design or a mismatched PMA to blade area ratio in the design. (Way-Holes are also called 'The Unengaged Blade Area' )

IT ALL BOILS DOWN TO THIS ONE SIMPLE LITTLE QUESTION IN THE END.

The REAL question becomes, WHAT is cheaper. Extra BLADES or COMPUTER controls???

Well, at least in the case of small wind turbines it's a no-brainer,, Extra blades are much cheaper than electronic controls and definitely more dependable too!!

In the final analysis more blades equals super low wind speed start up plus the added benefit's of simplicity and dependability. "Hub-Bub Talk" ©

OR link here http://www.youtube.com/watch?v=L1Z87w1DUvc

The microphone in this video was placed only about 12" away from the blades

so you can clearly "hear" the power and spin speed. At distance these blades

are surprisingly quiet and non-offensive to be around. Very neighbor friendly.

100% American Made -

High Quality Product (Not Imported)

Molded in Garden Grove California and Injected with plastic

and fibers made in the USA (SGL, Valencia, CA)

Each one of these carbon fiber wind turbine blades is 28 1/8" long, and almost

6" wide at the base. Makes full 65" diameter when on a 10" hub.

SEE THIS MOVIE LINK DIRECT - http://www.youtube.com/watch?v=TyB4oJrAtmc

http://www.youtube.com/watch?v=L1Z87w1DUvc

http://www.youtube.com/watch?v=TyB4oJrAtmc WOOD BLADES NO GOOD

Spinning does NOT equal power!

There are many blades on the market that can spin in any tiny little

breeze BUT spinning SLOW will NEVER give you high charging amperage!

Our blades coupled to our LOW cogging - easy turning PMA's will spin

800% faster than fat blades.

DO NOT BE FOOLED BY BLADES THAT SLOWLY SPIN AROUND

ALL THE TIME BUT NEVER "TAKE OFF" into the high RPM range.

For a direct drive PMA speed is way more important!

BUY THEM NOW / LINK TO:

Blade Extenders and power cones for extra power in low wind zones and areas with heavy trees.

Warning: Please note that these carbon fiber wind turbine blades are very sharp and can cause severe injury if handled improperly. Treat these blades with the same respect you would have for a sharp sword. These blade sets can turn at well over 2000 RPM on a windy day and can cause severe bodily injury when they are spinning. Use extreme caution! Never mount or work on a wind turbine on a windy day. Never place a turbine in any area that can be accessed by inexperienced persons or children. We assume no liability for ANY injuries caused by these products.

SunForce 44444, Southwest 403 / SIX-blade tests

Notes from Happy customers:

Love these blades you were right, wow can they turn on, im getting up to 40
volts out of my indiana general dv pm motor,there scarey sometimes, im
putting it on youtube for all to see, thanks again

-uptick57

SEE uptick57's video http://www.youtube.com/watch?v=WCkpjHPna-Y

Aluminum blades

THE GREAT CONE CONTROVERSY

Do cones help? - OR

Are they just for beautification?

The making of conical myths.

To learn more Click Here

High Wind Speed Protection

The ODD EVEN Blade Count - A True Story

Replacement blades for Southwest Windpower wind seeker types 501, 502, 503, 505 Etc.

(MUST BE SOLD IN THREE PACKS SO THEY DO NOT BEND IN SHIPPING!)

These blades are sold 3 per pack and come in 3 sizes:

42" long and 2.5" wide each. 3 pack is $119.95 plus shipping

48" long and 4.5" wide each. 3 pack is $179.95 plus shipping

58" long and 4.5" wide each. 3 pack is $229.95 plus shipping

Great for building VAWT vertical axis wind turbines too. Fast blades offer excellent lift.

Has nice wing shaped foil for excellent speed a strength.

You will need to trim and drill mounting holes and set pitch with your own shims. #6 hardened spring aluminum.

Great for making replacement blades for old Southwest and Windseeker types 501, 502, 503, 505 etc.

Works on virtually all vintage and newer wind turbines. Shipped taped to a 2 x 4 piece of lumber. Well packaged.

We take no responsibly for how these blades are used. You must make sure you drill, install, balance and back
them correctly.

More Notes from Happy customers:

Date: Thu, 27 Apr 2006 22:35:00 EDT

From: SANDC?????9@aol.com

To: info@??cu2.com

Dear Bob: I thought I would drop you a line and let you know about the turbine I ordered from you, it was to replace a southwest wind power windseeker 503, because it continually trashed the blades, I have gone through three of their sets of blades, and now they stopped making and servicing them. As I was assembling the one I received from you the windseeker was on the bench right next to it, and just for the heck of it I thought your hub and blades might go on the windseeker, which it did, I remounted the wind seeker with your hub and six blades and never saw it do such a good job, for nine years I have been hiding from this thing, and now I can stand right underneath it, your advertisement on your web site is 100% truthful, your blades turn with very little wind, and they withstand very high winds, and make very little noise, and virtually no vibration. I would recommend your blades to anybody that wishes to improve their current Wind Chargers. I haven't had a chance to mount your wind turbine yet as I am waiting on another set of blades. And if anybody wants to know about your customer service, I would highly recommend them to you, you always answer your e-mails and are very helpful.

thank you

R.S.

Colo.

est Windpower wind seeker replacement blades for

CCW spinning blades

If you want your blades to spin CCW just build a DOWN-WIND turbine design. EASY !

SEE LINKS explaining DOWN WIND Turbine designs-

http://www.reuk.co.uk/Up-Wind-or-Down-Wind-Generator.htm

POLYCARBONATE TOUGH