Basically a C-fan is the regular fan, the pattern the string makes passing over both axles is 'C' shaped. in this fan one diabolo gains some speed but the other looses speed so it can't be kept in a fan for very long.The S fan you get one of the diabolos on the darkside of the string so that the string forms an 'S' shape, this fan can be kept going for longer because both diabolos gain speed but it is harder to exit from.Check here for a list of posts about different tricks including C fans and S fans Trick & video archive Sean has an excellant couple of videos on Fans and S fan exits, you can find them in there too.Seán_
To my understanding, a C-fan is not a regular fan. Because there is not wrap involved. It`s like a sun, but then different. To my knowledge, there a 3 fan theories:regular fanC-fanS-fanthen, with the theories, they could all be reversed, anti clockwise, clockwise and so on.anyway, check out this: [trick]Fan done by Priam
Three methods of starting the fan are featured:1. Backwrapping one diabolo (or using a stopover) with the left stick for right handed diaboloists.2. Using an armstall. This method is easy to get the motion started with but difficult to line up at first.3. Vortexing into the fan. This method is probably the easiest once you have learned the vortex, although the vortex may be challenging to learn in itself.
Sean, about what fan was Priam talking in that topic I started. I believe a C--Fan without wrap.
The clockwise S-Fan will slow down both diabolos.Sean