That is the main purpose of the Soft-Loc clutch is to control the launch. If you are dropping more than 1000 to 1200 rpm on the launch you will lose in your 60' time which we all know has the biggest effect on the whole run. So you need to adjust the bass pressure for the launch and centrifugal weights to keep the clutch locked up for the rest of the run. On my best 60' at MusclePalooza, I turn my bass down from 5 turns to 4 turns ( my base pressure is 150# at zero turns) that took the car from 800# bass to 670# bass ( dropped the car from 1.62 to 1.50 60' on a marginal track ). My centrifugal weights are 13 grams per lever/finger for a total of 39 grams ( the levers/fingers are set to add 39# per gram at 6400 rpm ) so that is 1521# of centrifugal plus the 670# bass for 2191# at 6400 rpm. With a sintered iron clutch disc the hotter it gets the less pressure it needs to lock it up. Now this is all dependent on your horsepower, torque, first gear ratio, rear gear, tire size, and weight no two cars are the same. Good Luck and do not be afraid to mess with those clutch settings. When you get the clutch set for the 60' your car has the power for, you will be knocking on the 9 second bracket.
