I'm more than sure that there will be a 17.5 class next saturday
There are always the following classes each week:-
17.5 Blinky (4wd)
540 Sealed Can (2wd)
2wd Modified Motor
4wd Modified Motor
All that's different is that it could be a champ points scoring night for one or more class (but anyone can enter)
oh, and Short Course is once a month (but the other classes still run)
Hope this helps
Just remember to turn up early and help build the track