Hi, just complete the road test. Results using three blades, very bad, startup 25 MPH and 1 amp at 40MPH. Results for 6 Blades, about the as the fin style last tested. Conclusion, the fin or C rotor configuration produced the same results. Style of blade will be based on ease of fabrication because they produce the same results for this size blades. I am primarily interested in produce as many amps as possible at low wind speeds, 10 to 25 MPH. I am reducing belt drive gear ratio, increasing blade length, and replacing stators.