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2008 Tech Talk .....
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Information Thanks To Brown Racing
Karts.
(Click
Here To Visit Brown Racing Karts)
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Adelaide Dirt Kart Club.
General Karting
Information.
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Karts-
Karts are evolving as specifically designed to suit dirt track racing.
Quality Australian manufacturers who produce dirt-racing karts
predominantly build the chassis.
It is possible to convert a bitumen kart to race on dirt by increasing
steering lock, fitting of dirt wheels and tyres and fitting of a dirt
air cleaner. Current chassis today generally use 40mm alloy axles with
mechanical or hydraulic brake assemblies. One-piece wheels both front
and rear are used in combination with tubeless racing tyres. Karts
have wheelbases from 101cm to 106cm depending on application required
with even shorter karts available for younger competitors.
The karts are all chain driven, use two stroke oil with premium
unleaded petrol fuel.
Karts have different coloured number plates to distinguish individual
class requirements.
The air cooled Yamaha brand of engine is the most popular as it fits
into Senior and Junior classes being fixed drive, these karts have to
be lifted and pushed to get started, spin out and they will stall.
The 125 Classes using Rotax or Parilla Leopard engines are water
cooled with clutches and battery powered push button start mechanisms.
Karts have to be mechanically sound, clean and in good working order
to pass scrutineering prior to the commencement of the race meeting.
Differences between the classes are type of engine's), combined kart
and driver weight / age.
Engines-
KT100J – Engine can be blueprinted, no porting and various
restrictions to suit the class.
(Approx 10 HP)
KT100S- Engine can be modified and ported with few limitations.
(Approx 15-20HP)
125
Parilla Leopard and Rotax- Referred to as Touch And Go (TAG), no
porting and various restrictions to suit the class. (Approx 25-28 HP)
Classes-
Rookies – Yamaha KT100J, no minimum weight, from 7
Juniors –Yamaha KT100J, min 100Kgs, from 8
J Open – Yamaha KT100J, min 115Kgs, from 14
KT Light – Yamaha KT100S, min 120 Kgs, from 14.
KT Medium – Yamaha KT100S, min 140 Kgs, from 14.
KT Heavy – Yamaha KT100S, min 160Kgs, from 14.
100 Open –100cc Open Engine, min 140Kgs, from 16.
125 Light -- Rotax or Parilla Leopard, min 135 Kgs, from 16.
125 Heavy – Rotax or Parilla Leopard, min 160 Kgs, from 16.
Statesman –Yamaha KT100S, min 140 Kgs, from 40.
200 Open –(2) 100cc Open engines, min 160 Kgs, from 16.
KT Twin – (2) Yamaha KT100S, min 160 Kgs, from 16.
Summary-
Dirt Kart racing is growing in popularity for the competitive driver
and the drivers more interested in competing for fun.
There is a category for Rookies and Juniors who use one brand of
engine with limited modifications.
Senior drivers have more options from traditional fixed drive karts to
the evolving 125 (TAG) clutch fitted racing.
All Kart shops in Adelaide will be pleased to offer advice and
additional information regarding specific enquiries to getting started
racing a dirt kart at Adelaide Dirt Kart Club.
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Hacker
Beware
We have caught 4 shameful
hackers.
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