Here's my idea: I'd like to run a 7 speed cassette with a single chainring up front on my commuter bike. I'm seeing that I've got two options here: 1. Seek out older Shimano 600 parts and throw them on. 2. Run a new cassette, such as a Shimano HG70.
I'm leaning towards new parts, which puts me in a bit of a bind. I cant seem to get a straight answer on compatibility. Does anyone know if a Shimano HG70 cassette will fit on a current Ultegra hub (assuming that it requires a spacer)?
Conversely, any suggestions on a lightweight 7 speed cassette/hub combo? Ideally one that allows me to use a 36 hole Open Pro.