Clarence
I shot a few quick reference images and updated my web site with images of the fans and fan mechanism on my #10 camera- The link here
http://www.jamieyoungphoto.com/cirku...20n10%201.html
I have other info on some other pages as well
http://www.jamieyoungphoto.com/cirkutcameras1.html
and images shot with the camera here
http://www.jamieyoungphoto.com/Cirku...eople%201.html

I got my #16 on ebay for an extremely reasonable price, but had to get a lense, make a big gear, get and have made small gears, fans, tripod, etc. It was a project and all worked out after about a year. I'm always amazed at what comes up on ebay though.
On aerial film, this image was shot using 5" plus x aerial stock. Probably not the best example but hey.
http://www.jamieyoungphoto.com/uw%20...%20cirkut.html

Ed on film: It's like 220 film- Just leader and trailer, no backing. It should be around the same thickness as 120 - this does matter!
Jamie