How the Two Thirds System Works in Stoxkarts.
- Apr 28
- 2 min read
When we have more than 36 drivers booked in, we use the two thirds system to manage the meeting and keep the racing fair and organised.
How the Groups Are Formed
All drivers from:
Yellow
Blue
Red
Superstar
are split into three groups:
Group A / Group B / Group C
This is done using the opening grading list.
Drivers are allocated in order, rotating through the groups.
Example:
Group A – 38
Group B – 173
Group C – 22
Group A – 357
Group B – 380
Group C – 4
Group A – 8
Group B – 82
Group C – 129
…and so on down the grading list.
Heat Format
We run three heats, with an extra race added to accommodate the numbers.
Each heat includes two groups plus all white tops.
Heat 1: Group A + Group B + White Tops
Heat 2: Group B + Group C + White Tops
Heat 3: Group C + Group A + White Tops
White Tops
All white tops race in all three heats.
This guarantees:
Equal track time
Maximum opportunity to qualify
Feature Final
All graded drivers from:
Yellow
Blue
Red
Superstar
are automatically seeded into the feature final.
White Top Qualification
White tops must qualify through the heats.
Qualification is based on points scored across the heats
The top scoring white tops go through
Maximum grid: 32 cars
This means:
Some white tops qualify for the final
Some may not
Race Count
All white tops receive 3 heat races
Those who qualify for the final will race 4 times
Summary
The two thirds system ensures:
Fair track time for all drivers
Manageable race numbers
A clear and structured route into the feature final
If anything is unclear, speak to an official on race day.
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