Racelogic USER GUIDE Manual de usuario descargar pdf (Pagina 24)

RACELOGIC Traction Control Manual V3.0

Page 24

e.g. – To set the wet rev-limit to 4000 RPM.

Start the car.

Switch to wet settings.

Press the launch button twice and hold down on the second press.

Rev to 3750 RPM.

Release the button.

The soft cut is now set to 3750 RPM and hard cut to 4000RPM.

1.10.3 Laptop Program

Run the software and enter the Launch Control tab. Program the rev-limits as

desired.

1.10.4 Launch Procedure

Button Initiation – Stop the vehicle and press the launch button once leaving the

adjuster selecting the desired percentage slip.

The car will then rev-limit between the programmed soft and hard cut limits. The rev-

limit and launch control strategy depends upon whether wet or dry settings have

been selected with the adjuster.

After 2-3 seconds the car should be settled on the Launch Control Rev Limit. If it is a

turbo car the boost pressure should be gradually building up.

A common mistake is to bang the clutch in and instantly spin the wheels. The first 10

metres is the most critical phase, even a small amount of wheel spin at these low

speeds is very high in percentage terms. The clutch should be slipped whilst not

breaking traction, but not too much as to impede forward progress.

If you can't slip the clutch, then change it for one you can, you are losing out, here is

why :-

The clutch can be used as torque converter. The torque curve on a race engine is

going to be biased towards higher rpm, at low rpm there will not be a surplus of

torque over wheel spin. Therefore the engine needs to rev before it can accelerate

the vehicle at a decent rate. The clutch translates this high rpm into high torque.

On a low powered engine that cannot spin the wheels in first gear, the slipping clutch

translates the stored momentum of the engine into torque to artificially boost the

acceleration in the first few metres.

On a high-powered vehicle, the slipping clutch prevents the wheels from initially

breaking traction, the most important factor in a good start.

If the car “bogs down” or has too much wheel spin adjust the rev-limits to program

the perfect start.

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Racelogic USER GUIDE Manual de usuario Pagina 24