S (stall position): Within this point the turbine speed is zero and the impeller is rotating; the effectiveness from the stall position is least, around 50%, meaning that fifty percent of the ability coming within the engine is shed by way of friction and dissipated as heat; at this stage https://torqueconverterclutch10851.blogsumer.com/33447669/not-known-factual-statements-about-torque-converter-clutch