When we raced Comer two years ago it was not unusual for me to rebuild the carb between the last heat and final just to ensure it stayed optimal.
The key to success is getting your carb set on a Dyno and then only ever moving from that position in small amounts and then keeping it clean. But you also have to react to the conditions. If it has fallen 2 or 3 degrees by the time of the final then you will need to richen the low jet by 1 or 2 minutes to balance the fuel with the cooler air so as to maintain performance.
Cadet racing is all about reacting in advance to changing conditions and that is why teams with lots of experience do so well.
In the end we did very well against the teams but it was after a lot of research, dedication and failures.
Ultimately selecting a Tillotson type carb for the entry level kart class is a complete folly. They are just too difficult and finicky for the average Dad and lad team.
The MSA should have selected the Rotax Micro Max for entry level karting and then it would have replaced both Comer and Honda. With the Rotax engine you can be wrong by 1 or 2 jey sizes and still be competitive and have a great reliable days racing.
This is what the rest of the world has done but unfortunately a lot of influential people in British Karting are wedded to the Italian is best myth.
|
|