We are a manufacturer of high quality, wind turbine blades for use on small wind generators from 10 feet in diameter to 20 feet in diameter.
To order your wind turbine blades, contact us!
We build direct replacement wind turbine blades for the 1000 watt, 10' diameter, the 12' 1200 and 1500 watt Winchargers. They work easily in most custom, home built applications.
These wind turbine blades are made from laminated wood and are carved at a standard 10 degree pitch which gives you a tip speed ratio of 5.7. You can build more or less pitch into your own machine according to your particular application. Our constant cord, constant pitch profile makes for easy start up and quiet running.
This time tested, high torque, Gottingen 222 profile delivers large amounts of power at a lower RPM.
The standard 10° pitch gives you a tip speed ratio of 5.7 calculated. It actually runs at a tip speed ratio of 6.0.
This chart is an approximation with electical load. RPM will vary according to electrical load.
Tip Speed Ratio
Tip speed ratio is the tip speed of your wind turbine blade compared to the wind speed. A TSR (tip speed ratio) of 6 means that the tip speed will be 6 times faster than the wind speed. To calculate TSR of your blade draw the blades tip profile to scale on paper at the proper pitch in which the blade flies. Measure the distance that the wind would have to travel to completely pass the blade. This is where the wind would hit the forward most point (on the front or the surface facing the incoming wind) to the back most point. Compare this length the distance the blade travels from the leading edge to the trailing edge as the blade passes by a point in space. This is not always the cord length. A blade that has a steeper pitch will have a shorter distance of travel. If the distance the blade travels is 6 times the distance the wind travels then the TSR is 6.
This is only a geometric calculation. It does not take into account the lift characteristics of the profile. A high lift profile will have the benefits of a higher TSR.