Karting Na Rua

The chassis are made of steel tube.[7][8] There is no suspension therefore chassis have to be flexible enough to work as a suspension and stiff enough not to break or give way on a turn. Kart chassis are classified in the USA as 'Open', 'Caged', 'Straight' or 'Offset'. All CIK-FIA approved chassis are 'Straight' and 'Open'.

Open karts have no roll cage.

Caged karts have a roll cage surrounding the driver; they are mostly used on dirt tracks.

In Straight chassis the driver sits in the center. Straight chassis are used for sprint racing.

In Offset chassis the driver sits on the left side. Offset chassis are used for left-turn-only speedway racing.

The stiffness of the chassis enables different handling characteristics for different circumstances. Typically, for dry conditions a stiffer chassis is preferable, while in wet or other poor traction conditions, a more flexible chassis may work better. The best chassis allow for stiffening bars at the rear, front and side to be added or removed according to race conditions.

Braking is achieved by a disc brake mounted on the rear axle. Front disc brakes are used in most shifter kart classes and increasingly popular in other classes; however, certain classes do not allow them. Shifter karts have dual master cylinders, one for the front and one for the rear and are adjustable to allow for front/ rear bias changes.

Professionally raced karts typically weigh 165 to 175 lb (75 to 79 kg), complete without driver. Avanti, Tony Kart, Trulli, Birel, CRG, Gillard, Intrepid, Kosmic, Zanardi or FA Kart are a few well known examples of the many European manufacturers of race-quality chassis. Emmick and Margay are American companies producing kart chassis.

Engines [edit]

Amusement park go-karts can be powered by 4-stroke engines or electric motors, while racing karts use small 2-stroke or 4-stroke engines.

4-stroke engines can be standard air-cooled industrial based engines, sometimes with small modifications, developing from about 5 to 20 hp. Briggs & Stratton, Tecumseh, Kohler, Robin, and Honda are manufacturers of such engines. They are adequate for racing and fun kart applications. There are also more powerful four-stroke engines available from manufacturers like Yamaha, TKM, Swissauto or Aixro (Wankel engine) offering from 15 hp up to 48 hp. They run to and around 11,000 rpm, and are manufactured specifically for karting. Those are used in some National Championship classes like the two-strokes.

2-stroke kart engines are developed and built by dedicated manufacturers. WTP, Comer, IAME (Parilla, Komet), TM, Vortex, Titan, REFO, TKM, PRD, Yamaha and Rotax are manufacturers of such engines. These can develop from about 8 hp for a single-cylinder 60 cc unit (MiniROK by Vortex) to over 90 hp for a twin 250 cc.[1] Today, the most popular categories worldwide are those using the Touch-and-go (TAG) 125 cc units. The recent 125 cc KF1 engines are electronically limited at 16,000 rpm.[9] Most are water-cooled today; however, previously air-cooled engines dominated the sport.

Transmission [edit]

Karts do not have a differential.[8] The lack of a differential

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