CRG JUNIOR 100CC Guide de dépannage télécharger pdf (Page 7)

Terminology

Axle run-out: The variance of an axle from being perfectly round. This is usually measured with a dial

indicator.

Ballast: Weight, normally lead, added to raise he combination of kart and driver up the minimum legal

weight for the racing class.

Bearing Carrier: The element, normally three, in which the rear axle bearings are mounted.

Caster: The tilting to the rear, of the top of the kingpin on which the front wheel spindle pivots.

Camber: The tilting in, of the top of the front tires toward each other is negative camber. Tilting out is

positive camber.

Chassis Lift: The raising of the inside rear wheel on corner entry. The lift or “jacking” is caused by a

combination of frame stiffness, axle stiffness, caster and other factors.

Chassis Bind: A combination of elements including too much frame stiffness, overly stiff axle, etc. that

cause the kart to have too much grip, restricting performance.

Chassis Scaling: Weighing the kart and driver, preferably on digital scales, to determine weight

distribution.

Clutch Kart: A single-speed kart with an automatic centrifugal clutch. Typically, this type of kart will

have a low revving four-stroke or a high revving 100cc two-stroke engine.

Darting: An unstable condition where the kart is overly responsive to steering input.

Digital Scales: Highly accurate electronic scales used to determine weight distribution.

Frame Tweaking: The gradual bending of a kart frame to achieve optimum weight distribution.

Grip: The level of adhesion between the kart tires and the track.

Hopping: The kart bounce as throttle is applied near the apex of the turn.

Jacking Effect: The raising of the inside rear wheel on corner entry. The lift (or “jacking”), is caused

by a combination of frame stiffness, axle stiffness, caster and other factors.

Kingpin: The pin (bolt) on which the individual front wheel spindle pivots.

Live Axle: A single piece rear axle without the differential that allows the outside wheel to rotate

independently of the inside wheel when the vehicle is cornering. This forces both rear tires to try and

rotate at the same speed. Since they are moving around a different radius, one tire must lose this fight.

Race karts are specifically prohibited from using axle differentials.

Nylock Nuts: Nuts with a nylon center that allow it to lock securely to the bolt and avoid loosening.

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CRG JUNIOR 100CC Guide de dépannage Page 7