In this paper, a new form of Darrieus–Savonius vertical axis wind turbine (D-S VAWT) with three-bladed NACA 0015 airfoil is tested in a subsonic wind tunnel. The D-S VAWT is incorporated with vertical and horizontal drag cups to analyze the centripetal force performance. The experiment shows the force coefficient values of D-S VAWT blade pitch angle from 80° to 120° with Reynolds number variation. The Reynolds number variations are taken from the specified wind velocity conditions of 3, 5, 9, and 12 m per second according to the local weather conditions. The comparison results between traditional H-type vertical axis wind turbine (H-type VAWT) and D-S VAWT shows that changing the rotor blade pitch angle and changing the location of vertical drag cups and horizontal drag cups extemporizes the centripetal force coefficient of the turbine with self-starting capacity. It is found that the optimal blade pitch angle is 110 degrees, and the optimal drag cup is horizontal drag cup. The result finalizes that traditional H-type VAWT with optimal blade pitch angle is having higher centripetal force coefficient without self-starting condition at high tip speed ratios. D-S VAWT with optimal blade pitch angle is having constant centripetal force coefficient with high self-starting condition even at low tip speed ratios. At Reynolds number 41000, D-S VAWT with vertical drag cups is more efficient than horizontal drag cups. Further, up to Reynolds number 100,000, D-S VAWT with horizontal drag cups is more efficient than the vertical drag cups.