Home Forums General Karting Discussion Why do drivers sit so tall in sprint karts? Reply To: Why do drivers sit so tall in sprint karts?

rich hibbs

Couple Points

Tires are not rigid and flex, this helps turning as the contact patch deforms to allow the change in direction.

We have a term for what Paul is describing.  FLAT SLIDE and in sprint karting not desirable.

TRACTION CIRCLE.  A tire can only give you 100% of one thing.  You can only ask a tire to give you 100% acceleration, 100% deceleration, 100% steering.  Once you ask for it to turn and slow or accelerated you will only get a reduction in overall performance.

Tire Friction.  Once a tire advances over the threshold of 100% performance it starts to slide.  To stop the slide you can go back to 100% and still be unable to achieve friction. To have grip you must go well beyond 100% to somewhere in the area of 85% to allow the tire to again build friction and grip.

So therefore a setup set to allow the rear tires to slide is a reduction of overall performance of the tire and will cause a reduction in deceleration and acceleration available from the tire.

Not to mention I sure as hell don’t want to be in a laydown position trying to stop my body from going forward when braking with a kart with full brake system, or dealing with the turn in forces, or even better the curb hoping.