NB - before completely changing the kart’s set up, be sure the problem isn’t due to the nut sitting behind the steering wheel. The kart and the driver should do most of the work of changing direction early in the corner, so they can drive smoothly off the corner and not bog the kart down. If the inner tyre does not lift, then no matter how much you turn the steering wheel, the front of the chassis will want to keep going straight thus creating an understeer or ‘push’ condition. The outer rear tyre then drives the kart around the corner because the opposite rear tyre is off the track surface. with the inside rear tyre lifting off the track on corner entry. The chassis is thus designed in a manner to allow it to turn the only way it can without having a rear differential i.e. track) of the kart.Ī kart is a unit made up of tubes that flex fairly easily, and powered through a live axle (one without a differential). Wheel spacer: A metal ring that slides over the front axle to change the front width (i.e. Wet tyres: Soft compound tyres with full tread used under wet track or rain conditions. Weight distribution: The percentage of total weight on each tyre, alternatively the front half of the kart compared to rear half (front/rear weight distribution). Understeer: A condition when the kart will not turn into the corner due to a lack of front end grip and is also known as ‘push’. Track: The overall measured width of the front or rear, taken from the outside edges of the tyres. Toe out: The condition of front-end alignment when the rear edges of the tyres are closer to each other than the front edges. Toe in: The condition of front-end alignment when the front edges of the tyres are closer to each other than the rear edges. Torsion bar: A bar that is used to alter stiffness by adding reinforcement to the kart frame. kingpin) on which the individual front wheel spindle pivots. Side bite: Lateral adhesion between the kart tyres and the track surface. Seat strut: A brace mounted between the seat back and the bearing carrier to add stiffness to the rear of the kart chassis. Ride height: The distance of the kart chassis, either front or rear, from the track surface. The kart rear end kicks out suddenly at the apex. Push/kick: Occurs near the apex of the turn as the kart transitions from braking to the application of the throttle. Steady state throttle should not upset the chassis balance. Power induced oversteer: A tendency for the rear of the kart to slide outward at corner exit under hard power application. This tendency must be occurring as the kart enters the corner, and not on the corner exit when the application of power can cause a ‘power induced oversteer’. ![]() Oversteer: A tendency for the rear of the kart to slide outward at corner entry or mid-corner. ![]() ![]() A one-piece axle forces both rear tyres to try and rotate at the same speed, and since they are following different radius curves around the corner, one tyre loses the fight. A differential allows the outside wheel to rotate independently of the inside wheel when the vehicle is cornering. Live axle: A one-piece rear axle without a differential. Kingpin: The pin or bolt on which an individual front wheel spindle pivots. Jacking effect: Raising of the inside rear wheel on corner entry caused by a combination of frame stiffness, axle stiffness, caster and other factors. Hopping: Bouncing of the kart as the throttle is applied near the apex of the turn. Grip: The level of adhesion between the kart tyres and the track. that cause the kart to have too much grip, thus restricting performance.Ĭhassis scaling: Weighing the kart and driver, preferably on digital scales, to determine weight distribution fore/aft and also side/side.ĭarting: An unstable condition where the kart is overly responsive to steering input. This lift or ‘jacking’ is caused by a combination of frame stiffness, axle stiffness, caster and other factors.Ĭhassis bind: A combination of elements including too much frame stiffness, overly stiff axle, etc. On a kart, usually expressed as millimetres.Ĭhassis lift: Raising of the inside rear wheel on corner entry. The recommendations that follow have all been verified via numerous reliable sources, so should in theory work well.īearing carrier or cassette: Usually two or three elements in which the rear axle bearings are mounted.Ĭaster: Rearward tilt angle (off vertical) of the kingpin on which the front wheel spindle pivots.Ĭamber: The tilting (off vertical) of the top of the front tyres toward each other is negative camber, and tilting out is positive camber. Setting up a race kart chassis properly is 100% legal, providing one abides by the regulations, but requires an understanding of the basic technical principles that govern the handling, plus good feedback from the driver. As with any other sport, one needs to understand and abide by the rules and regulations that govern karting.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |