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Problems... solutions

Most of the people who follow this sport think that the adjustments of a kart can be done in a standardised way. This is a fallacy, there may be a standard set-up, but many aspects must be evaluated only after a track inspection. The track may be very tyre-marked if there has recently been a race, or it may have rained, or it may have been used for hire-go-karts with hard tyres and so be very slippery, or many other possible cases. It is also common to find several fast drivers all with the same frame model but with very different set-ups, so this is why we will give you the main tips according to the varying perfomances of the frame.

Under steering 1: the frame tends to broaden the trajectory when entering a bend, so does not turn; this probably is due to too much adherence at the back of the kart so the driver has to steer more than necessary, and in advance, in order to obtain the correct trajectory.

Possible solutions:

1) broaden the front carriage
2) raise the frame at the front
3) mount the front torsion bar
4) increase the angle of the casters
5) bring the seat forward
6) exchange the rear axel with a softer one
7) check that the convergence is open 1-2mm
8) narrow the rear carriage
9) exchange the rear hubs with shorter ones

Understeering 2: the frame tends to broaden trajectory when exiting bend, so does not turn; this is probably due to too much adherence at the back of the kart so the driver has to steer more than necessary, and in advance, in order to obtain the correct trajectory.

Possible solutions:

1) narrow the front carriage
2) mount the front torsion bar
3) raise the frame at the front
4) lower the frame at the rear
5) increase the angle of the casters
6) bring the seat forward
7) loosen or remove the extra seat supports
8) exchange the rear axel with a softer one
9) check that the convergence is open 1-2mm
10) loosen screws of rear bumber bar
11) lower tyre pressure


Oversteering: the frame tends to close-in the trajectory and has little grip at the rear; this is probably due to too much adherence in the front of the kart, so the driver has to counter-steer in order to maintain the kart’s trajectory.

Possible solutions:

1) narrow the front carriage
2) broaden the carriage at the rear
3) exchange the hubs for longer ones
4) raise the frame at the rear
5) move the seat back slightly
6) exchange the rear axel for a more rigid one
7) mount the rear torsion bar
8) remove the front torsion bar
9) tighten the screws of the rear bumper and block the bumber bar
10) lower the frame at the front
11) increase the pressure of the rear tyres
12) reduce the angle of the casters

Oversteering: the frame tends to slip both at the front and at the rear; this is probably due to poor adherence of the kart, so the driver has to counter-steer continuously in order to maintain the kart’s trajectory.

Possible solutions:

1) exchange the rear axel with a more rigid one
2) mount the rear torsion bar
3) mount the front torsion bar
4) tighten the screws of the rear bumper and block the bumber bar
5) raise the frame at the front
6) increase the pressure of the tyres
7) raise the seat

Wet weather set-up:

1) open the convergence at the front
2) raise the frame at the front
3) increase the angle of the casters
4) broaden the front carriage
5) raise the seat even 2-3cm
6) narrow the rear carriage
7) loosen the screws of the rear bumper and of the bumber bar
8) loosen the bearing of the central axel
9) loosen or remove the extra seat supports
10) exchange the rear axel for a softer one