2. For all classes (except 12th oval, more on that in a moment) you are allowed to run up to 6 cells maximum in all classes.
This is a quote from on another board (rcracing.com) from someone using the name "uspancarchamps".
He sounds like he is running the event, so what are the real classes. He uses the ROAR rule book (that does have a 6 cell class) to justify running 12th scale as 4 or 6 cell with their respective weight limits. The track looks good, but pretty big. If anyone shows up with a 6 cell cars, the 4 cell cars will not be competitive (IMHO).