Find out about options to standard drive systems: planetary gears, continuously variable transmission (CVT's), Capreo cassettes, Schlumpf drives, Rohloff Speedhub, and Patterson Metropolis 2-speed bottom-bracket / spider.

When are the different options appropriate? When are they on the edge? What works with what? How do you install?

We'll cover the highlights. There will be Show and Tell. Focus this week will be on the Patterson Drive. We'll put one on a test boom for a trike and see what it takes to do it.

Cost: FREE