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. Thanks for stopping by, David Moller

Hello everyone and welcom to my website. Every week or so I will be writing a small article here for informational and entertainment purposes. I have been into alternative energy since I was a child. My welding and metal fabrication shop has allowed me the ability to build wind turbines, towers, solar panels and experiment in these area with some new ideas.
Ten or twelve years ago my friend, who owns the Wincharger website, came to me with a need for replacement Wincharger blades. So I built a machine to carve these blades. I soon found out how well these blades perform and I am now using them on three blade turbines. I am super impressed with the power that these blades produce. As you can see from this website I am making them available to everyone for as cheap as I possibly can. If you have any questions about blades or applications feel free to contact me here, email, or telephone.
Future posts will be about verious topics such as blade sizing, tip speed ratios, flyweight governors, tail waggers. direct heating, charging batteries, etc.
So thanks for stopping by, Dave Moller