Some data points to add to Berto's Tables (sorry, Frank) ???
- Maillard (=Sachs Huret) helicomatic cassette freewheels (no individual cogs), 1978(?) Maillard got the essence right, i.e. that only the cogs need to be changed, not the cassette.
http://www.yellowjersey.org/
- Some data points for 6-speed freewheels, 1970 (atom raleigh pro 1970 component, 13-26) (atom 77 compact raleigh rra 1973 component, 14-24)
- Don Gillies
San Diego, CA