Doug - Thanks for passing on the B&H aerial film information. Aerial film may not be the ideal solution for Cirkuts, but it is nice to know something is available. If you can stand to wait to find a #10 Camera, rather than an #8 Outfit, you will probably be better off. However, people do various type of film slitting all the time, so it is possible. I think the secret is take the time to make a good film spool holder and cutting guide. I've heard there is a black mylar plastic that works well for leaders and trailers.
An idea for finding a Cirkut, if you have the time - go around to old established commercial studios and camera stores and see if they know anyone who might have a Cirkut. I found one of mine this way. A studio owner knew a former employee who had a partial #10. Camera store clerks may know of serious collectors who have a Cirkut. I know one collector in Seattle who had half a dozen in his collection. As professional use of Cirkuts has dwindled, I suspect a lot have ended up in collector's hands. And while you are looking, you could ask about outdated aerial film.
Clarence - I've never seen an instruction book for a fan camera. All the reprints on eBay and elsewhere seem to be for the later governor cameras, although much of the information is the same for both types. You will learn quite a bit from the later style i.b. if that is all you can find. Keep watching eBay for a #6 gearhead. They are really difficult to find, but not impossible. In the end, you may have to make one. Cutting almost 300 teeth sounds tedious to say the least, but compared to what some people do making model live steam locomotives, it is nothing. One thing in your favor - you don't have to make an exact reproduction of the original gear head; just something that functions. For what a #6 gearhead will probably cost you on eBay, you can buy a nice dividing head from eBay and an involute gear cutter, and have the dividing head for future projects.
Ron - Thanks for posting your gear cutting method. I've been curious what method you use. I haven't looked at that hobbing article in HSM in a few years, but I still remember it being a rather involved thing to build. Regarding the Chinese film idea, I had a feeling you had checked on this. I remember Bill McBride saying you found the Chinese camera, although I couldn't remember who ended up with it. If you are in contact with Bill, tell him I'm still alive. I never make it to the Puyallup camera swap anymore. Maybe next year.

Len