The 2018 regulations have been simplified with a new easy PAX formula. Simply take the raw lap time and multiply it by the PAX factor for your class.
To figure out your class, simply use the online classification calculator here: http://ccdb.casc.on.ca/
As per section 3.1 NATIONAL CHAMPIONSHIP AND OVERALL SCORING of the regulations, the PAX factors are as follows:
Class | PAX Factor |
---|---|
Open Modified | 1.062 |
Modified 1 | 1.052 |
Modified 2 | 1.012 |
Modified 3 | 1.00 |
Super Grand Touring 1 | 0.988 |
Super Grand Touring 2 | 0.976 |
Super Grand Touring 3 | 0.964 |
Grand Touring 1 | 0.952 |
Grand Touring 2 | 0.940 |
Grand Touring 3 | 0.928 |
Grand Touring 4 | 0.916 |
Touring 1 | 0.904 |
Touring 2 | 0.892 |
Touring 3 | 0.880 |
http://www.asncanada.com/wp-content/uploads/2017/08/2017_ASN_Time_Attack_Regulations_Final.pdf, see section 3.1.3.
For example:
Raw lap time: 1:22.8, Class T3:
88.8 seconds * 0.88 = 78.144 PAX time (1:18.144)