Usually, when purchasing a chassis, the driving position is adjusted to the child’s height. Yet, we must take into account the fast growth due to the age. Therefore, if the position of the pedals remains unchanged after one or two years because you forget or do not notice it, it is a mistake. It must be the parent who understands that the driving position is wrong, looking at the child in the kart and noticing if he/she has no room to adjust themselves to the correct position. The best method to check the position is to have the driver get into the kart and placed on the kart’s stand and have him/her extend his/her legs to evaluate how far he/she can reach with his/her feet. The legs must be extended yet is essential for the driver to be able to press the pedals to the stroke limit with ease. In particular, the legs should not touch the steering tie-rods. If desired, one can also use the adjustment of the throttle wire.
In the first two laps my advice is to use the same pressure on all four tires when they are cold. We can start at 0.85 bar. The goal, at the end of the session is to have the kart with all four warmed up tires at the same pressure. If this does not happen, we can change the pressure when the tires are cold to compensate for the difference. We keep the value of 1 bar of pressure with warm tires as a good value which will allow the tires to work in the correct parameters and offer maximum grip. Obviously, the atmospheric temperature must be considered as well. If we start to drive at 9am, at 2pm we would easily have a higher atmospheric temperature. This will force us to adjust the pressure on cold tires at a lower bar unit.
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