Originally Posted by
Homebrew01
Watch it shift while on a workstand. It's quite simple. It Just moves between 2 positions on a double crankset, pushing the chain from 1 chainring to the other.
Some can be a bit finicky to set up....getting the height right, and alignment, but plenty of on-line instructions to help.
Note to self: buy workstand.
Seriously though, I've been thinking about how useful one would be for years. What sort of prices can I expect?