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MSA letter to Comer Cadets
To all competitors, teams, circuits, clubs and organisers,

The Motor Sports Association has been extremely concerned with the on-going situation regarding the problems that have been associated with the introduction of the Tryton carburettor with the Comer W60 engine in cadet kart racing.

A number of parents and teams have contacted the MSA, in particular since the BRDC Stars of Tomorrow and Super One Championships began, reporting reliability issues, usually referred to as the carburettor “dumping”.

As soon as the apparent reliability problems emerged, all of those involved in British Cadet Karting; BRDC Stars of Tomorrow, Super One, ABkC, BKIA, ZipKart and the MSA, have worked continuously to try to resolve the problems and competitors will be fully familiar with the regulation and fiche changes that have been made in attempting to find a solution. The updated fiche is available for reference purposes on the MSA website under “News” update 16.6.2008.

The MSA has constantly sought hard evidence regarding the exact nature of the problems with the Tryton, but this has been difficult as many other problems have been blamed on the Tryton which has only served to cloud the issue further. But it has been essential to get beyond the general dismissal of the unit and to identify the real issues.

The MSA has received feedback, not just from the other bodies already referred to, but in particular from competitors. In addition, there have been survey results, technical reports and the response of the manufacturer who attended the first round of the BRDC Stars of Tomorrow.

Reviewing very briefly the evidence and other information, it seems that whilst some parents and teams were reporting reliability problems at the start of the two major Championships, the changes that have been put into effect since then have been beneficial and reliability has significantly improved. Whilst it appears that each of the changes has brought about some aspect of improvement, the feedback received by the MSA suggests that the relaxation of the engine lubrication regulation has had the most benefit.

In particular the problem of “dumping” seems to be no longer such a concern. The main problem now seems to be the issue of drivers finding it more difficult to adjust the carburettor than they did with the previous Tillottson.

ZipKart has arranged for alternative jet adjustment screws to be manufactured to reduce significantly this adjustment problem. If this proves satisfactory in testing the fiche will be amended, allowing these jet adjustment screws to be used as alternatives. The MSA understands that Zip will supply the alternative jet adjustment screws on an exchange basis without charge.

Against this background of an improved situation and with these revised jet adjustment screws expected to be available shortly the MSA does not anticipate making any further alterations to the regulations relating to the Comer Cadet Carburettor. The MSA has no plans to withdraw the Tryton carburettor nor to introduce another new Comer Cadet Carburettor during 2008.

The MSA shares the disappointment of all involved with the apparent reliability problems of the new Tryton carburettor and would like to thank all Comer Cadet competitors for their patience. The MSA agrees that it is unacceptable for the racing of the UK`s youngest competitors to be adversely affected by this type of issue and will be taking measures to ensure that a similar situation is not repeated in the future.

The MSA will continue to monitor the position and will keep you advised of any further developments.

Best regards



Rob Jones
General Secretary
Motor Sports Association