Good morning Gentlemen, I've been reading this thread and wanted to clarify a few things. The S/E facebook page is predominantly two stroke because most of the stuff people send me to post is two stroke related and I'm guilty of putting my bike on there too much, the page is for all bikes regardless of engine configuration.
The non-tear down rule comes from ManCup, they do not have a tech director to tear anyone down and if they did no one with a four stroke motor would run the class. Frank, would you run the class if we made you tear down after setting a record? I don't think so.
That is why the class designations completely changed, there wasn't a CB class in the IDBA, a CB750 would run in the "D" class, which was all four stroke bikes with around 750cc displacement. We didn't feel like that would work in ManCup because you would be running heads up with ZX7s and GSXR 750s. So CB 750s run in their own class, regardless of displacement.
In a nutshell, what we hoped to see was a group of racers that had unique machines that would set their own records and rivalries would develop based on resetting that record and I think we have the beginnings of that strategy.
Please do not hesitate to email, text call, whatever you like and I will do my best to answer your questions.