Originally Posted by legalize_it

this is a jimv thread, he has some great pictures of a rebuild of a bendix.

but ill chime in a lil too... theres lots of different types of coaster brakes but they all basically do the same thing. there is some sort of clutch that is actuacted by back-pedaling, which engages a brake. there are mainly 2 kinds of clutch, a corkscrew style, and a roller-cam style. most of the brakes are a shoe style, but there are also plate style brakes. if you're really curious take one apart, they are pretty self explanatory.