While some believe all their engine's power is not getting applied to the track if the clutch slips after the shifts, they are missing the big picture. Truth is, controlled slip after the shift helps keep rpm up, which in-turn allows the engine to make more power. When done properly, the power gained due to clutch slip more than offsets the loss of efficiency due to slip.
For example, let's say an engine makes 425ftlbs from 4500-5500, trans ratios are 3.17/1.96/1.34/1.00, and the engine exits 1st gear @ 7820. With no clutch slip, the engine would fall all the way back to 4835rpm where it would only be making 391hp. Real-world data for my example shows the clutch did slip a little after the shift, and only pulled the engine down to 5132. So instead of 391hp with no slip at all, hp was raised to 415 with just 0.163 seconds of slip after the 1/2 shift.
Since clutch load is highest after the shift into high gear, I generally look for enough slip to land around 300-500rpm above where the calculator says it would land after the high gear shift.
Another aspect to consider is that no slip after the shifts would create huge wheelspeed spikes if it didn't break the transmission first. The spikes generally happen so fast that most of the energy released gets wasted spinning the tires instead of being harnessed to make the car faster. Kinda like trying to move a glass on a table as quickly as possible by pulling on the tablecloth. Pull too fast, your effort is wasted as the glass doesn't move.
For those that want to minimize slip after the shifts when using my ClutchTamer product, just set your clutch pedal stop a little deeper than normal. From there, launch from the pedal stop but don't bounce off the pedal stop for the shifts. You get the full effect of the 'tamer during launch, but then it does not fully re-set for the shifts.
Chapter 01- The Basics of Inertia Management
Chapter 02- Calculating Inertia's Effect on Input Shaft Torque
Chapter 03- Clutch Slip After the Shifts... Good or Bad?
Chapter 04- Heavier Cars LESS Likely To Break Transmissions?
Chapter 05- Understanding The ClutchTamer
Chapter 06- Understanding The Hitmaster
Chapter 07- The Basics of Analyzing Dragstrip Data
Chapter 08- Flywheel Weight- Heavy or Light?
Chapter 09- Choosing a Proper Clutch & Pressure Plate
Chapter 10- The Importance of a Clutch Pedal Stop
Chapter 11- What's the Best Launch RPM?
Chapter 12- Do You Need a 2-Step Rev Limiter?
Chapter 13- Traction Problems- Adjust Shocks, Chassis, or Clutch?
Chapter 14- Are "Clutchless" Shifts Right For You?
Chapter 15- Traction Control- Yes or No?
Chapter 16- Apply ClutchTamer Tech to an Adjustable Clutch?
CHANGING THE GAME ON LAUNCHING YOUR STICK SHIFT CAR!!!