The SACHS groupo was on the Interbike display in 1994 and pictured in the SE Flyer of that year. This was a rear hub that had took the place of the front three chainrings, and ran a cassette for the other 7. Here are some of the components from that bike and other new pieces from Mike Devitt. (A scan of the flyer will follow, including setup instructions, should you wish to replicate that build.)