Report KD 601 about a self starting Darrieus rotor has been reviewed. The estimated Cp-lambda and Cq-lambda curves given at chapter 5 have been changed. For very low lambda values, the rotor works as a drag machine and the Cq-lambda curve now has a small positive Cq value for values of lambda smaller than 0.3. The maximum Cp has been reduced from 0.35 up to 0.3.