CRG JUNIOR 100CC Guide de dépannage télécharger pdf (Page 5)

It is best to work on the end of the kart that is not handling well. If, for example, the problem is

understeer, try to solve the problem by first adding more grip. If that is not successful, try taking grip

away from the rear to balance the chassis.

When a kart is properly set up, steering effort will be reduced and it will seem to “float” through the

corners. Remember, the front and rear of the kart must be in balance, with neither end too tight or too

loose. If you turn the steering wheel and the motor load increases, the chassis is “bound” and wasting

horsepower. Free up the chassis and gain horsepower!

Engine power is wasted in several ways, including:

Brake pad drag

Friction in the wheel bearings

Incorrect wheel alignment

Misaligned engine/sprockets

Such problems cause increased rolling resistance, which means more power is required to achieve the

same acceleration and speed. Since the engine doesn’t magically gain power to overcome rolling

resistance, the kart just goes slower. If the increased rolling resistance is due to bad alignment, the

kart will probably also handle poorly. Small improvements all add up to faster lap times and race wins

on the track. You may not think a blink of the eye amounts to much, but at most races it will mean

everything.

Often the most stable set up is one where the kart tends to understeer just a bit into corners while

under brakes and then turns to neutral steering when the power is applied and the kart is driven out of

the corner. This is not massive understeer, just enough to show that understeer may be present. A

kart set up this way is very stable into corners and is easy to drive. Remember, oversteer may be tons

of fun and look very exciting to the spectators. However, it is (unfortunately) slow!

When setting your kart chassis, it is a good idea to find the longest corner and set the kart up to bounce

just a bit (just this side of hopping) on this corner. This bounce should not be enough to put you off line.

It should be kept within easily controllable limits. The chassis is simply telling you that you aren’t sliding

with too little grip and you aren’t hopping with too much grip. If the kart is set up this way, then it will be

giving maximum grip through the longest corner and this is where the greatest saving in lap times is

available.

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CRG JUNIOR 100CC Guide de dépannage Page 5